CN1892567A

CN1892567A - Storage virtualization subsystem architecture and configuration construction method and computer system therefor

Info

Publication number: CN1892567A
Application number: CN 200610091566
Authority: CN
Inventors: 刘宁一; 李正宇; 方庆华
Original assignee: INFORTREND Inc
Current assignee: INFORTREND Inc; Infortrend Technology Inc
Priority date: 2005-06-09
Filing date: 2006-06-09
Publication date: 2007-01-10
Anticipated expiration: 2026-06-09
Also published as: CN100504747C

Abstract

Disclosed is a storage virtualization subsystem architecture, which comprises a plurality of storage virtualization subsystems, each storage virtualization subsystem comprises at least one storage virtualization controller. A first and a second data access path are configured passing through the storage virtualization subsystems. One path is formed by connecting the whole storage virtualization subsystem using connection. The two paths are configured by following way: the storage virtualization subsystems in the first path are connected in a first sequence, the storage virtualization subsystems in the second path are connected in a second sequence different from the first one. In the second embodiment, each storage virtualization subsystem comprises a plurality of redundantly-configured storage virtualization controllers.

Description

Storage virtualization subsystem architecture and configuration constructing method and computer system

Technical field

The present invention relates to a kind of framework of sas storage virtualization subsystem, particularly relate to a kind of configuration construction, comprise the storage virtualization subsystem architecture that a plurality of sas storage virtualization subsystems link together about storage virtualization subsystem architecture.

Background technology

Comprise in sas storage virtualization subsystem (sas storage virtualization subsystem) framework that a plurality of sas storage virtualization subsystems link together at one, when this storage virtualization subsystem architecture by configuration be construed as have only a data access path by it the time, then owing to have a Single Point of Faliure, sas storage virtualization subsystem will lose the ability of data access.

Therefore, be to have a kind of configuration (configuration) demand for storage virtualization subsystem architecture, this configuration can prevent under this storage virtualization subsystem architecture, owing to the Single Point of Faliure of this storage virtualization subsystem architecture causes data to obtain the loss of ability.

This shows that above-mentioned existing storage virtualization subsystem architecture obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem that storage virtualization subsystem architecture exists, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of storage virtualization subsystem architecture of new structure, just become the current industry utmost point to need improved target.

Because the defective that above-mentioned existing storage virtualization subsystem architecture exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of storage virtualization subsystem architecture of new structure, can improve general existing storage virtualization subsystem architecture, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.

Summary of the invention

Fundamental purpose of the present invention is, be to overcome the Single Point of Faliure of this storage virtualization subsystem architecture in the existing storage virtualization subsystem architecture and cause data to obtain the defective of the loss of ability, and provide a kind of storage virtualization subsystem architecture of new structure, technical matters to be solved is that it is included: a plurality of sas storage virtualization subsystems, each sas storage virtualization subsystem comprise at least one sas storage virtualization controller; One first data access path and one second data access path, each is construed as this two data access path by this storage virtualization subsystem architecture by configuration, wherein, these two kinds of paths are configuration construction in the following manner: in this first path, those sas storage virtualization subsystems are to be linked in sequence together with one first, in this second path, those sas storage virtualization subsystems are to be linked in sequence together with one second, this second order is to be different from this first order, thereby is suitable for practicality more.

Another main purpose of the present invention, be to overcome the Single Point of Faliure of this storage virtualization subsystem architecture in the existing storage virtualization subsystem architecture and cause data to obtain the defective of the loss of ability, and a kind of computer system that realizes sas storage virtualization is provided, include: a host computer and a storage virtualization subsystem architecture are thereon attached; This storage virtualization subsystem architecture comprises a plurality of sas storage virtualization subsystems, and one first data access path and one second data access path, and each sas storage virtualization subsystem comprises at least one sas storage virtualization controller; Each is construed as this two data access path by this storage virtualization subsystem architecture by configuration; Wherein, these two kinds of paths are configuration construction in the following manner: in this first path, those sas storage virtualization subsystems are to be linked in sequence together with one first, in this second path, those sas storage virtualization subsystems are to be linked in sequence together with one second, and this second order is to be different from this first order.

Another main purpose of the present invention, be to overcome the Single Point of Faliure of this storage virtualization subsystem architecture in the existing storage virtualization subsystem architecture and cause data to obtain the defective of the loss of ability, and provide a kind of configuration constructing method of storage virtualization subsystem architecture, this storage virtualization subsystem architecture is to comprise a plurality of sas storage virtualization subsystems, each sas storage virtualization subsystem comprises at least one sas storage virtualization controller, and this method may further comprise the steps: with first be linked in sequence those sas storage virtualization subsystems come one first data access path of configuration construction by this storage virtualization subsystem architecture and; Come one second data access path of configuration construction by this storage virtualization subsystem architecture with second those sas storage virtualization subsystems that are linked in sequence, and this second order is to be different from this first order.

Another main purpose of the present invention, be to overcome the Single Point of Faliure of this storage virtualization subsystem architecture in the existing storage virtualization subsystem architecture and cause data obtain ability loss defective and a kind of sas storage virtualization subsystem is provided, storage virtualization subsystem architecture, it includes: a plurality of sas storage virtualization subsystems, each sas storage virtualization subsystem comprises the sas storage virtualization controller that two redundant configurations are provided with, each is to have a device end I/O device that meets the attached small computer system interface of tandem (SAS) agreement to link controller for these two sas storage virtualization controllers, and this device end I/O device binding controller is to comprise the attached small computer system interface of at least one tandem port; A plurality of data access path is construed as by this storage virtualization subsystem architecture by configuration; Wherein, in the one first data access path in this a plurality of data access path, those sas storage virtualization subsystems are to be linked in sequence together with one first, in the one second data access path in this a plurality of data access path, those sas storage virtualization subsystems are to be linked in sequence together with one second.

Another main purpose of the present invention, be to overcome the Single Point of Faliure of this storage virtualization subsystem architecture in the existing storage virtualization subsystem architecture and cause data obtain ability loss defective and a kind of computer system that realizes sas storage virtualization is provided, include: a host computer and a storage virtualization subsystem architecture are thereon attached; This storage virtualization subsystem architecture comprises a plurality of sas storage virtualization subsystems, and one first data access path and one second data access path, each sas storage virtualization subsystem comprises the sas storage virtualization controller of two redundant configuration construction, each is to have a device end I/O device that meets the attached small computer system interface of tandem (SAS) agreement to link controller for these two sas storage virtualization controllers, and this device end I/O device binding controller is to comprise the attached small computer system interface of at least one tandem port; A plurality of data access path is construed as by this storage virtualization subsystem architecture by configuration; Wherein, in the one first data access path in this a plurality of data access path, those sas storage virtualization subsystems are to be linked in sequence together with one first, in the one second data access path in this a plurality of data access path, those sas storage virtualization subsystems are to be linked in sequence together with one second.

Another fundamental purpose of the present invention, be to overcome the Single Point of Faliure of this storage virtualization subsystem architecture in the existing storage virtualization subsystem architecture and cause data obtain ability loss defective and a kind of configuration constructing method of storage virtualization subsystem architecture is provided, this storage virtualization subsystem architecture is to comprise a plurality of sas storage virtualization subsystems, each sas storage virtualization subsystem comprises a plurality of sas storage virtualization controllers, each is to have a device end I/O device that meets the attached small computer system interface of tandem (SAS) agreement to link controller for these two sas storage virtualization controllers, and it is to comprise the attached small computer system interface of at least one tandem port that this device end I/O device links controller, and this method may further comprise the steps: with first be linked in sequence those sas storage virtualization subsystems come one first data access path of configuration construction by this storage virtualization subsystem architecture and; Come one second data access path of configuration construction by this storage virtualization subsystem architecture with second those sas storage virtualization subsystems that are linked in sequence.

The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of storage virtualization subsystem architecture that the present invention proposes, it includes: a plurality of sas storage virtualization subsystems, each sas storage virtualization subsystem comprise at least one sas storage virtualization controller; One first data access path and one second data access path, each is construed as this two data access path by this storage virtualization subsystem architecture by configuration, wherein, these two kinds of paths are configuration construction in the following manner: in this first path, those sas storage virtualization subsystems are to be linked in sequence together with one first, in this second path, those sas storage virtualization subsystems are to be linked in sequence together with one second, and this second order is to be different from this first order.

The object of the invention to solve the technical problems also adopts following technical measures further to realize.

Aforesaid storage virtualization subsystem architecture, wherein said at least one sas storage virtualization controller are to have a device end I/O device that meets the attached small computer system interface agreement of tandem to link controller.

Aforesaid storage virtualization subsystem architecture, the type of wherein said sas storage virtualization subsystem is to be the Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem,, a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem or only be a bundle disc player sas storage virtualization subsystem or wherein both or three's combination.

Aforesaid storage virtualization subsystem architecture, wherein said when this sas storage virtualization subsystem be this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or this when only being a bundle disc player sas storage virtualization subsystem, this sas storage virtualization subsystem comprises that more an entity storage device array attaches on this at least one sas storage virtualization controller.

Aforesaid storage virtualization subsystem architecture, each sas storage virtualization controller of wherein said at least one sas storage virtualization controller comprise that one first port is used for this first path and one second port is used for this second path.

Aforesaid storage virtualization subsystem architecture, wherein said at least one sas storage virtualization controller only comprises a sas storage virtualization controller.

Aforesaid storage virtualization subsystem architecture, each includes one first sas storage virtualization controller and one second sas storage virtualization controller wherein said sas storage virtualization subsystem, and both are established in this sas storage virtualization subsystem for redundant configuration, this first data access path is those the first sas storage virtualization controllers through those sas storage virtualization subsystems simultaneously, and this second data access path is those the second sas storage virtualization controllers through those sas storage virtualization subsystems.

Aforesaid storage virtualization subsystem architecture, the wherein said first data access path is that those sas storage virtualization subsystems are linked in sequence with following: at first be connected to one first sas storage virtualization subsystem, next is connected to one second sas storage virtualization subsystem, then connect backward in regular turn, till last sas storage virtualization subsystem; And this second data access path is that those sas storage virtualization subsystems are linked in sequence with following: at first be connected to this first sas storage virtualization subsystem, next is connected to this last sas storage virtualization subsystem, then connect forward in regular turn, till this second sas storage virtualization subsystem.

Aforesaid storage virtualization subsystem architecture, wherein said first sas storage virtualization subsystem is to be a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem, and other sas storage virtualization subsystem is for only being a bundle disc player sas storage virtualization subsystem.

Aforesaid storage virtualization subsystem architecture, the wherein said first sas storage virtualization controller comprises one first port and one second port, and this second sas storage virtualization controller comprises one the 3rd port and one the 4th port, and in each of those sas storage virtualization subsystems, this first path and this second path are through two ports in these four ports.

Aforesaid storage virtualization subsystem architecture, the wherein said first sas storage virtualization controller comprises one first port and one second port, and this second sas storage virtualization controller comprises one the 3rd port and one the 4th port, and in each of those sas storage virtualization subsystems, this first path and this second path are through two ports in these four ports, this storage virtualization subsystem architecture more comprises one the 3rd data access path and one the 4th data access path simultaneously, is through two other port in these four ports.

The object of the invention to solve the technical problems also realizes by the following technical solutions.According to a kind of computer system that realizes sas storage virtualization that the present invention proposes, include: a host computer and a storage virtualization subsystem architecture are thereon attached; This storage virtualization subsystem architecture comprises a plurality of sas storage virtualization subsystems, and one first data access path and one second data access path, and each sas storage virtualization subsystem comprises at least one sas storage virtualization controller; Each is construed as this two data access path by this storage virtualization subsystem architecture by configuration; Wherein, these two kinds of paths are configuration construction in the following manner: in this first path, those sas storage virtualization subsystems are to be linked in sequence together with one first, in this second path, those sas storage virtualization subsystems are to be linked in sequence together with one second, and this second order is to be different from this first order.

The computer system of aforesaid realization sas storage virtualization, wherein said at least one sas storage virtualization controller is to have a device end I/O device that meets the attached small computer system interface agreement of tandem to link controller, and this device end I/O device binding controller is to comprise the attached small computer system interface of at least one tandem port.

The computer system of aforesaid realization sas storage virtualization, the type of wherein said sas storage virtualization subsystem is to be the Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem,, a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem or only be a bundle disc player sas storage virtualization subsystem or wherein both or three's combination.

The computer system of aforesaid realization sas storage virtualization, wherein said when this sas storage virtualization subsystem be this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or this when only being a bundle disc player sas storage virtualization subsystem, this sas storage virtualization subsystem comprises that more an entity storage device array attaches on this at least one sas storage virtualization controller.

The computer system of aforesaid realization sas storage virtualization, each sas storage virtualization controller of wherein said at least one sas storage virtualization controller comprise that one first port is used for this first path and one second port is used for this second path.

The computer system of aforesaid realization sas storage virtualization, wherein said at least one sas storage virtualization controller only comprises a sas storage virtualization controller.

The computer system of aforesaid realization sas storage virtualization, wherein said first sas storage virtualization subsystem is to be a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem, and other sas storage virtualization subsystem is for only being a bundle disc player sas storage virtualization subsystem, this first data access path is that those sas storage virtualization subsystems are linked in sequence with following simultaneously: at first be connected to one first sas storage virtualization subsystem, next is connected to one second sas storage virtualization subsystem, then connect backward in regular turn, till last sas storage virtualization subsystem; And this second data access path is that those sas storage virtualization subsystems are linked in sequence with following: at first be connected to this first sas storage virtualization subsystem, next is connected to this last sas storage virtualization subsystem, then connect forward in regular turn, till this second sas storage virtualization subsystem.

The computer system of aforesaid realization sas storage virtualization, each includes one first sas storage virtualization controller and one second sas storage virtualization controller wherein said sas storage virtualization subsystem, and both are established in this sas storage virtualization subsystem for redundant configuration, this first data access path is those the first sas storage virtualization controllers through those sas storage virtualization subsystems simultaneously, and this second data access path is those the second sas storage virtualization controllers through those sas storage virtualization subsystems.

The computer system of aforesaid realization sas storage virtualization, the wherein said first sas storage virtualization controller comprises one first port and one second port, and this second sas storage virtualization controller comprises one the 3rd port and one the 4th port, and in each of those sas storage virtualization subsystems, this first path and this second path are through two ports in these four ports, this storage virtualization subsystem architecture more comprises one the 3rd data access path and one the 4th data access path simultaneously, is through two other port in these four ports.

The object of the invention to solve the technical problems also realizes by the following technical solutions.The configuration constructing method of a kind of storage virtualization subsystem architecture that proposes according to the present invention, this storage virtualization subsystem architecture is to comprise a plurality of sas storage virtualization subsystems, each sas storage virtualization subsystem comprises at least one sas storage virtualization controller, and this method may further comprise the steps: with first be linked in sequence those sas storage virtualization subsystems come one first data access path of configuration construction by this storage virtualization subsystem architecture and; Come one second data access path of configuration construction by this storage virtualization subsystem architecture with second those sas storage virtualization subsystems that are linked in sequence, and this second order is to be different from this first order.

The configuration constructing method of aforesaid storage virtualization subsystem architecture, wherein said at least one sas storage virtualization controller is to have a device end I/O device that meets the attached small computer system interface agreement of tandem to link controller, and this device end I/O device binding controller is to comprise the attached small computer system interface of at least one tandem port.

The configuration constructing method of aforesaid storage virtualization subsystem architecture, the type of wherein said sas storage virtualization subsystem is to be the Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem,, a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem or only be a bundle disc player sas storage virtualization subsystem or wherein both or three's combination.

The configuration constructing method of aforesaid storage virtualization subsystem architecture, wherein said wherein when this sas storage virtualization subsystem be this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or this when only being a bundle disc player sas storage virtualization subsystem, this sas storage virtualization subsystem comprises that more an entity storage device array attaches on this at least one sas storage virtualization controller.

The configuration constructing method of aforesaid storage virtualization subsystem architecture, wherein said at least one each sas storage virtualization controller of sas storage virtualization controller comprises that one first port is used for this first path and one second port is used for this second path.

The configuration constructing method of aforesaid storage virtualization subsystem architecture, wherein said at least one sas storage virtualization controller only comprises a sas storage virtualization controller.

The configuration constructing method of aforesaid storage virtualization subsystem architecture, each includes one first sas storage virtualization controller and one second sas storage virtualization controller wherein said sas storage virtualization subsystem, and both are established in this sas storage virtualization subsystem for redundant configuration, this first data access path is those the first sas storage virtualization controllers through those sas storage virtualization subsystems simultaneously, and this second data access path is those the second sas storage virtualization controllers through those sas storage virtualization subsystems.

The configuration constructing method of aforesaid storage virtualization subsystem architecture, wherein said first sas storage virtualization subsystem is to be a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem, and other sas storage virtualization subsystem is for only being a bundle disc player sas storage virtualization subsystem, this first data access path is that those sas storage virtualization subsystems are linked in sequence with following simultaneously: at first be connected to one first sas storage virtualization subsystem, next is connected to one second sas storage virtualization subsystem, then connect backward in regular turn, till last sas storage virtualization subsystem; And this second data access path is that those sas storage virtualization subsystems are linked in sequence with following: at first be connected to this first sas storage virtualization subsystem, next is connected to this last sas storage virtualization subsystem, then connect forward in regular turn, till this second sas storage virtualization subsystem.

The configuration constructing method of aforesaid storage virtualization subsystem architecture, the wherein said first sas storage virtualization controller comprises one first port and one second port, and this second sas storage virtualization controller comprises one the 3rd port and one the 4th port, and in each of those sas storage virtualization subsystems, this first path and this second path are through two ports in these four ports, this storage virtualization subsystem architecture more comprises one the 3rd data access path and one the 4th data access path simultaneously, is through two other port in these four ports.

The object of the invention to solve the technical problems also realizes by the following technical solutions.A kind of sas storage virtualization subsystem according to the present invention's proposition, storage virtualization subsystem architecture, it includes: a plurality of sas storage virtualization subsystems, each sas storage virtualization subsystem comprises the sas storage virtualization controller that two redundant configurations are provided with, each is to have a device end I/O device that meets the attached small computer system interface agreement of tandem to link controller for these two sas storage virtualization controllers, and this device end I/O device binding controller is to comprise the attached small computer system interface of at least one tandem port; A plurality of data access path is construed as by this storage virtualization subsystem architecture by configuration; Wherein, in the one first data access path in this a plurality of data access path, those sas storage virtualization subsystems are to be linked in sequence together with one first, in the one second data access path in this a plurality of data access path, those sas storage virtualization subsystems are to be linked in sequence together with one second.

Aforesaid sas storage virtualization subsystem, the type of wherein said sas storage virtualization subsystem are to be Redundant Array Of Independent Disks (RAID)) sas storage virtualization subsystem, Redundant Array Of Independent Disks (RAID) front-end control head or only be a bundle disc player sas storage virtualization subsystem or wherein both or three's combination.

Aforesaid sas storage virtualization subsystem, wherein said when this sas storage virtualization subsystem be this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or this when only being a bundle disc player sas storage virtualization subsystem, this sas storage virtualization subsystem comprises that more an entity storage device array attaches on these two sas storage virtualization controllers.

Aforesaid sas storage virtualization subsystem, wherein said first order are to be same as this second order.

Aforesaid sas storage virtualization subsystem, each sas storage virtualization controller of wherein said those sas storage virtualization controllers comprise that one first port is used for this first path and one second port is used for this second path.

Aforesaid sas storage virtualization subsystem, wherein said two first sas storage virtualization controllers for two sas storage virtualization subsystems that link together only are provided with one and are linked between this two first sas storage virtualization controller.

Aforesaid sas storage virtualization subsystem, wherein said sas storage virtualization controller is to comprise one first sas storage virtualization controller and one second sas storage virtualization controller, this first sas storage virtualization controller comprises one first port and one second port, and this second sas storage virtualization controller comprises one the 3rd port and one the 4th port, and in each of those sas storage virtualization subsystems, this first path and this second path are through two ports in these four ports, this storage virtualization subsystem architecture more comprises one the 3rd data access path and one the 4th data access path simultaneously, is through two other port in these four ports.

The object of the invention to solve the technical problems also realizes by the following technical solutions.According to a kind of computer system that realizes sas storage virtualization that the present invention proposes, it includes: a host computer and a storage virtualization subsystem architecture are thereon attached; This storage virtualization subsystem architecture comprises a plurality of sas storage virtualization subsystems, and one first data access path and one second data access path, each sas storage virtualization subsystem comprises the sas storage virtualization controller of two redundant configuration construction, each is to have a device end I/O device that meets the attached small computer system interface agreement of tandem to link controller for these two sas storage virtualization controllers, and this device end I/O device binding controller is to comprise the attached small computer system interface of at least one tandem port; A plurality of data access path is construed as by this storage virtualization subsystem architecture by configuration; Wherein, in the one first data access path in this a plurality of data access path, those sas storage virtualization subsystems are to be linked in sequence together with one first, in the one second data access path in this a plurality of data access path, those sas storage virtualization subsystems are to be linked in sequence together with one second.

The computer system of aforesaid realization sas storage virtualization, the type of wherein said sas storage virtualization subsystem is to be Redundant Array Of Independent Disks (RAID)) sas storage virtualization subsystem,, Redundant Array Of Independent Disks (RAID) front-end control head or only be a bundle disc player sas storage virtualization subsystem or wherein both or three's combination.

The computer system of aforesaid realization sas storage virtualization, wherein said when this sas storage virtualization subsystem be this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or this when only being a bundle disc player sas storage virtualization subsystem, this sas storage virtualization subsystem comprises that more an entity storage device array attaches on these two sas storage virtualization controllers.

The computer system of aforesaid realization sas storage virtualization, wherein said first order are to be same as this second order.

The computer system of aforesaid realization sas storage virtualization, each sas storage virtualization controller of wherein said those sas storage virtualization controllers comprise that one first port is used for this first path and one second port is used for this second path.

The computer system of aforesaid realization sas storage virtualization, wherein said two first sas storage virtualization controllers for two sas storage virtualization subsystems that link together only are provided with one and are linked between this two first sas storage virtualization controller.

The object of the invention to solve the technical problems also realizes by the following technical solutions.The configuration constructing method of a kind of storage virtualization subsystem architecture that proposes according to the present invention, this storage virtualization subsystem architecture is to comprise a plurality of sas storage virtualization subsystems, each sas storage virtualization subsystem comprises a plurality of sas storage virtualization controllers, each is to have a device end I/O device that meets the attached small computer system interface agreement of tandem to link controller for these two sas storage virtualization controllers, and it is to comprise the attached small computer system interface of at least one tandem port that this device end I/O device links controller, and this method may further comprise the steps: with first be linked in sequence those sas storage virtualization subsystems come one first data access path of configuration construction by this storage virtualization subsystem architecture and; Come one second data access path of configuration construction by this storage virtualization subsystem architecture with second those sas storage virtualization subsystems that are linked in sequence.

The configuration constructing method of aforesaid storage virtualization subsystem architecture, the type of wherein said sas storage virtualization subsystem are for Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem, Redundant Array Of Independent Disks (RAID) front-end control head or only are a bundle disc player sas storage virtualization subsystem or wherein both or three's combination.

The configuration constructing method of aforesaid storage virtualization subsystem architecture, wherein said when this sas storage virtualization subsystem be this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or this when only being a bundle disc player sas storage virtualization subsystem, this sas storage virtualization subsystem comprises that more an entity storage device array attaches on these two sas storage virtualization controllers.

The configuration constructing method of aforesaid storage virtualization subsystem architecture, wherein said first order are to be same as this second order.

The configuration constructing method of aforesaid storage virtualization subsystem architecture, wherein said two first sas storage virtualization controllers for two sas storage virtualization subsystems that link together only are provided with one and are linked between this two first sas storage virtualization controller.

By technique scheme, storage virtualization subsystem architecture of the present invention has following advantage at least:

1, major advantage of the present invention is that this storage virtualization subsystem architecture has this first data access path and this second data access path, and it all is construed as by this storage virtualization subsystem architecture by configuration.Thus, this configuration can prevent under this storage virtualization subsystem architecture, owing to the Single Point of Faliure of this storage virtualization subsystem architecture causes data to obtain the loss of ability.

2, other advantage of the present invention is when the Single Point of Faliure of this storage virtualization subsystem architecture and when causing data to obtain ability, storage virtualization subsystem architecture of the present invention is still done data access.

In sum, the storage virtualization subsystem architecture of special construction of the present invention, it has above-mentioned many advantages and practical value, and in like product, do not see have similar structural design to publish or use and really genus innovation, no matter it all has bigger improvement on product structure or function, have large improvement technically, and produced handy and practical effect, and more existing storage virtualization subsystem architecture has the multinomial effect of enhancement, thereby be suitable for practicality more, and have the extensive value of industry, really be a novelty, progressive, practical new design.

Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.

Description of drawings

Figure 1A demonstrates a calcspar according to the body frame structure of an embodiment of a system that includes a sas storage virtualization subsystem of the present invention.

Figure 1B demonstrates a calcspar according to the body frame structure of an embodiment of a system of the present invention, and this system is the sas storage virtualization subsystem that includes the sas storage virtualization controller of a plurality of redundant configuration construction.

Fig. 2 A one demonstrates the calcspar of one first embodiment of one sas storage virtualization controller 200 according to the present invention.

Fig. 2 B one demonstrates the calcspar of one second embodiment of one sas storage virtualization controller 200 according to the present invention.

Fig. 3 A is an embodiment according to a storage virtualization subsystem architecture configuration construction of the present invention.

Fig. 3 B is one according to the of the present invention one further storage virtualization subsystem architecture configuration construction of embodiment.

Fig. 4 A is according to another embodiment of the present invention a storage virtualization subsystem architecture configuration construction.

Fig. 4 B is a storage virtualization subsystem architecture configuration construction according to another embodiment again of the present invention.

Fig. 5 A is a storage virtualization subsystem architecture configuration construction according to another embodiment again of the present invention.

Fig. 5 B is a storage virtualization subsystem architecture configuration construction according to another embodiment again of the present invention.

Fig. 5 C is a storage virtualization subsystem architecture configuration construction according to another embodiment again of the present invention.

Fig. 6 A is that this peripheral element of illustration links the calcspar of extension interface to an embodiment of the attached small computer system interface controller 310 of tandem.

Fig. 6 B is that illustration one peripheral element links the calcspar of extension interface to one second embodiment of the attached small computer system interface controller 310 of tandem.

Fig. 6 C is that this DASD array 400 to this peripheral element among illustration Fig. 6 A links the one first real calcspar done of extension interface to the connection configuration of the attached small computer system interface controller 310 of tandem.

Fig. 6 D is the calcspar that is illustrated in an embodiment at the attached small computer system interface of this tandem port among Fig. 6 A/6B/6C.

Fig. 6 E is illustrated in the calcspar that uses an embodiment of the attached small computer system interface expanded circuit 340 of this tandem among Fig. 6 B/6C in the attached small computer system interface expander device 315 of this tandem.

Fig. 6 F is that illustration one peripheral element links the calcspar of extension interface to the 3rd embodiment of the attached small computer system interface controller 310 of tandem.

Fig. 6 G is that this DASD array 400 to this peripheral element among illustration Fig. 6 A links the one second real calcspar that connect configuration of extension interface to the attached small computer system interface controller 310 of tandem.

Fig. 7 is one according to this central processing circuit shown in the present and be connected to the illustration calcspar of other function squares of this sas storage virtualization controller.

Fig. 8 A is illustrated in the calcspar that the attached small computer system interface I/O device of tandem among Fig. 2 A links the more detailed connection of 400 of controller 300 and DASD arrays.

Fig. 8 B is illustrated among Fig. 2 B the more detailed calcspar that connects configuration between this expanded circuit and other function square.

10: main computer unit

200: the sas storage virtualization controller

20: sas storage virtualization subsystem

420: DASD

400: the DASD array

220: the host side I/O device links controller

280: memory body

300: the attached small computer system interface I/O device of tandem links controller

240: central processing circuit

360: casing management service circuit

236: redundant manipulator is linked up and is linked controller

400: the entity storage device

340: expanded circuit

20-2: only be a bundle disc player sas storage virtualization subsystem

20-1: Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem

312: peripheral element links the extension interface to the attached small computer system interface interface of tandem

310: peripheral element links the extension interface to the attached small computer system interface controller of tandem

318: the bus-bar interface

316: the configuration construction

340: the attached small computer system interface expanded circuit of tandem

600: the attached small computer system interface of tandem port

690: transport layer

700: the attached small computer system interface of tandem port layer

710: the attached small computer system interface binder couse of tandem

720: the real layer of the attached small computer system interface of tandem

730: the attached small computer system interface physical layer of tandem

315: the attached small computer system interface extender of tandem

3151: extender connects

3154: real layer

244A: the central processing unit wafer set/with the bit engine

3152: management function

246: ROM

242: central processing unit

350: the liquid crystal display module

248: non-volatile random access memory

Embodiment

Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of storage virtualization subsystem architecture, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.

The sas storage virtualization brief introduction

Sas storage virtualization (storage virtualization) is a kind of with the virtualized technology in entity storage area, it is with each entity storage device (Physical Storage Device, PSD) each section is combined into and can stores body (logical storageentity) for the logic of a main computer unit access and be called " logical medium unit " (logical media units at this, LMU), this technology is mainly used in independent redundancy Redundant Array Of Independent Disks (RAID) (RAID) (in this abbreviation " Redundant Array Of Independent Disks (RAID) ") sas storage virtualization, through Redundant Array Of Independent Disks (RAID) technology thus, the capacity that less entity storage device can be combined into is bigger, fault tolerant, dynamical logical medium unit.

Sas storage virtualization controller (storage virtualization controller, the sas storage virtualization controller) being is a device (device), and its fundamental purpose is the visible logical medium of combination mapping (map) the formation one host computer system unit with each section of entity Storage Media.Going into by the output that this host computer system is sent that (IO) ask after receiving can be earlier by analysis and decipher, and the output that relevant operation and data can be compiled into the entity storage device goes into to ask.This process can be indirectly, for example (as: write-back (write-back)) got, postpones in utilization soon, usefulness and other operating characteristic are strengthened in expection (anticipate) (reading (read-ahead) earlier), the operations such as (group) of trooping, thus a main frame to export into request might not be directly to export into request corresponding to the entity storage device in man-to-man mode.

Circumscribed (or can be described as stand alone type (stand-alone)) sas storage virtualization controller is the sas storage virtualization controller that is connected in host computer system via output-input interface for a kind of, and but its support company is connected to the device that is positioned at the host computer system outside, generally speaking, the sas storage virtualization controller of circumscribed normally is independent of main frame and operates.

Circumscribed (or stand alone type) direct access RAID controller (externaldirect-access RAID controller) is an example of circumscribed sas storage virtualization controller.RAID controller is with one or more entity DASD (direct accessstorage device, DASD) each section combination is to constitute the logical medium unit, and their constituted mode is determined by the characteristic of the specific magnetic disc array level (RAID level) that is adopted, the logical medium unit that it constituted for the host computer system of utilizing them, but be addressing continuously.Typically, a single RAID controller can be supported multiple Redundant Array Of Independent Disks (RAID) grade, therefore, different logical medium unit can be combined by different Redundant Array Of Independent Disks (RAID) grades in a different manner by each section of DASD (DASD), and the different logical medium unit of each that is combined into then has the respectively characteristic of this Redundant Array Of Independent Disks (RAID) grade.

The example of another circumscribed sas storage virtualization controller is only to be a bundle disc player (Just a Bunchof Drives, JBOD) analog controller.JBOD is the abbreviation of " only being a bundle disc player ", be a group object DASD, and be directly connected on the host computer system via one or more many device I/O devices binding passages (multiple-device IO device interconnect channel).But use point-to-point I/O device to be connected to the DASD (as SATA hard disc, PATA hard disc etc.) of this host computer system, can't see through directly combination and constitute only is a bundle disc player system as the aforementioned, because these DASDs (DASD) do not allow multiple arrangement to be connected directly to the I/O device passage.As for intelligent only be a bundle disc player simulator apparatus, be by the mode that request is mapped to the entity DASD is gone in output, and be used for simulating the DASDs that a plurality of many device I/O devices link, and wherein this entity DASD is that individually to link via point-to-point I/O device that passage is connected to only be a bundle disc player simulator apparatus.

The example of another circumscribed sas storage virtualization controller is the controller that a circumscribed tape backup subsystem is used.

The topmost function of sas storage virtualization controller is management, combination and controls the entity storage device, and its form with one group of logical medium unit is presented in host side, make each logical medium unit in host side, all similarly be a direct-connected entity storage device, this logical medium unit then is this entity storage device equivalent logically.In order to reach this purpose; go into request by main frame output and by the output that the sas storage virtualization controller is handled; if can produce some behavior usually in an equivalent entity storage device, then these are exported the request meeting and produce the behavior of equivalence in logic at the sas storage virtualization controller on about the part of the logical medium unit of institute's addressing.Consequently, this main frame can think it be connected directly to an entity storage device and with communication, though in fact, this main frame is that to be connected to one only be that and the logical medium unit of this sas storage virtualization controller institute addressing is the equivalent in logic of this entity storage device on the sas storage virtualization controller of this entity storage device behavior of simulation.

In order to realize above-mentioned Behavior modeling, the sas storage virtualization controller will receive the output that comes from main frame go into request and map to the built-in function that equates in logic, wherein have operation partly not need to produce any device end and export into asking and just can finish to device end entity storage device; These operations only need get final product in inside, do not need device end entity storage device is carried out access.The output of this class goes into that request produced operates in this and will be called " internal simulation operation (internally emulatedoperation) ".

Yet some operation can't only be carried out via internal simulation, but also can't directly carry out access to device end entity storage device.For instance, during as the data read operation of fast extract operation, just be present in fully in the data memory cache body of sas storage virtualization controller at present corresponding to the data of the medium section of exporting the addressing of request institute (media section); Or when the data write operation, when the memory cache body of this sas storage virtualization controller is to operate in write-back mode, then make in the data elder generation write caching memory body, then just be sent to suitable entity storage device.These operations all can be described as " asynchronous device operation (asynchronous device operation) ", that is the output that arbitrary reality of device end entity storage device takes place to reach to reach its original purpose requested operation in order to make to go into request all be to carry out before or after institute's requested operation indirectly, rather than directly carry out in response to institute's requested operation.

Also have a class to be exported into asking to the operation that operation constituted of entity storage device by direct generation device end in addition, this operation is to be called " synchronous device operation (synchronous deviceoperation) ".

In addition, exported into request by some host side and can map to the combination operation of being made up of a plurality of inhomogeneous child-operation, these child-operations can comprise internal simulation operation, the operation of asynchronous device and/or synchronous device operation.The example that host side that maps to operation of asynchronous device and synchronous device operative combination is exported into request is, a data reads request, the pairing data of medium section of its institute's addressing in the logical medium unit, some is present in the middle of the memory cache body at present, some is not present in the middle of the memory cache body, thereby must read in the middle of the entity storage device.These child-operations that read data in the middle of the memory cache body are non-synchronous device operations, because not needing directly to finish this from the access of device end entity storage device, do not export this child-operation into request, but the indirect result who relies on before performed device end entity storage device access; Directly the child-operation that reads data to the entity storage device is then operated for synchronous device because it needed be device end entity storage device is carried out data access finish this and export directly and immediately into request.

Sas storage virtualization subsystem (Storage Virtualization Subsystem, SVS) can connect main frame via the main frame-storage area interface of standard so that the main frame sas storage virtualization to be provided, the main frame storage interface of this standard is to use a plurality of configurations to be configured as the sas storage virtualization controller of redundancy (redundant) form, so that just in case when the situation of a sas storage virtualization controller failure was wherein arranged, wherein all primitive operations can be taken over and carry out to another sas storage virtualization controller.

Figure 1A is depicted as according to the embodiment among the present invention, and it is the calcspar of a body frame structure that comprises a system of a sas storage virtualization subsystem (SVS).Comprise that according to system of the present invention a host computer 10 and a sas storage virtualization subsystem 20 are connected to this host computer 10.Though only 10 and sas storage virtualization subsystems 20 of main computer unit of illustration (host entity) are connected in Figure 1A, but it can be more than one sas storage virtualization subsystem 20 and attaches to this main computer unit 10, or more than one main computer unit 10 attaches to this sas storage virtualization subsystem 20, or more than one main computer unit 10 attaches to more than one sas storage virtualization subsystem 20.

This main computer unit 10 can be a server system, workstation, personal computer system, and in addition, this main computer unit 10 can be another sas storage virtualization subsystem or sas storage virtualization controller.This sas storage virtualization subsystem 20 comprises a sas storage virtualization controller 200, this sas storage virtualization controller 200 can only be an a bundle disc player simulator for a RAID controller or one, and a DASD (direct access storage device, DASD) array 400.Though at this illustration one direct accessing storing device array 400 only, the DASD array 400 that surpasses more than one can attach on this sas storage virtualization controller 200.(do not indicate among Figure 1A and Figure 1B) in another embodiment, can not comprise the DASD array 400 that is used for storage loads data (payload data) in this sas storage virtualization subsystem 20, but the DASD array 400 or that attaches on this sas storage virtualization subsystem 20 in external mode only is that a bundle disc player comes the storage loads data.In this example, this sas storage virtualization subsystem 20 is to be called Redundant Array Of Independent Disks (RAID) front-end control head (RAID head) the Redundant Array Of Independent Disks (RAID) function being provided and connecting this main computer unit 10 and DASD array that this outside is attached 400 and only be between a bundle disc player, but not the storage area of giving information.

Among the embodiment, this sas storage virtualization controller 200 can be the attached small computer system interface of a tandem (serial attached SCSI, SAS) sas storage virtualization controller, in other words, defer to the sas storage virtualization controller that the attached small computer system interface communication protocol of tandem is done in fact for one.This sas storage virtualization controller 200 is received the request and relevant data (control signal and data signal) of exporting (IO) from main computer unit 10, and carries out inner output and go into request or data is mapped to this DASD array 400.This sas storage virtualization controller 200 is used to enhanced performance and/or increases the data utilizability and/or with main computer unit 10, can increase the storage volume of a unity logic media units.This DASD array 400 comprises a plurality of DASD 420, this DASD 420 can similarly be hard disk drive (hard diskdrive, HDD), and its form comprises or the attached small computer system interface DASD of tandem or the tandem advanced technology accesses (serial advanced technology attachment, Serial ATA, SATA) DASD, or these both.

When being set to, uses when being different from the Redundant Array Of Independent Disks (RAID) grade of Redundant Array Of Independent Disks (RAID) grade 0 or grade 1 the logical medium unit in this sas storage virtualization subsystem 20, for example be that grade 3 is to class 6, this DASD 420 comprises at least one coordination DASD, that is to say, one direct accessing storing device includes coordination data DASD therein, can use the utilizability of enhancement data.In addition, usefulness also can be promoted when execution output goes into to operate, because the access of data is to be dispensed on to surpass between the DASD.Moreover, because the logical medium unit is made up of the section of a plurality of DASDs, can significantly increase an accessible storage volume of unity logic media units, for example, in a Redundant Array Of Independent Disks (RAID) subsystem of Redundant Array Of Independent Disks (RAID) class 5, can reach above-mentioned all functions.In a Redundant Array Of Independent Disks (RAID) subsystem of Redundant Array Of Independent Disks (RAID) class 6; it is similar to class 5; but it comprises that the coordination data can be protected because the data loss that DASD caused of two or more inefficacies has increased the utilizability of data in the stocking system.

Logical medium unit in this sas storage virtualization subsystem 20 is set when using to Redundant Array Of Independent Disks (RAID) grade 1, identical data will be stored in two different DASDs, therefore under the cost of double DASD cost, the utilizability of data will significantly improve.

Logical medium unit in this sas storage virtualization subsystem 20 is set use in Redundant Array Of Independent Disks (RAID) grade 0, its enhancement rather than utilizability that focuses on usefulness is considered, therefore on the data utilizability, there is no enhancement, yet, aspect usefulness, then can significantly promote, for example, in the Redundant Array Of Independent Disks (RAID) subsystem of a Redundant Array Of Independent Disks (RAID) grade 0 with two hard disk drive, in theory, be for having 200% usefulness of a storage device that a hard disc only arranged, because data segment inequality under the control of this sas storage virtualization controller 200, can be stored in the identical time in two different hard disk drive.

Figure 1B is the calcspar of an embodiment body frame structure, and its demonstration is to comprise that according to of the present invention one one has sas storage virtualization subsystem 20 systems of the sas storage virtualization controller 200 of a plurality of redundant configuration construction.Under this configuration (configuration), when sas storage virtualization controller 200 failure/fault, another sas storage virtualization controller 200 will be taken over all operations that the sas storage virtualization controller of this failure/fault is carried out originally.

Fig. 2 A is one according to the shown sas storage virtualization controller 200 of the present invention and be connected to main frame and the calcspar of one first embodiment of DASD array.In the present embodiment, this sas storage virtualization controller 200A comprises that a host side I/O device links controller 220, a central processing circuit (central processing circuitry, CPC) (enclosure management service, EMS) circuit 360 and is used as device end and exports into the output of the attached small computer system interface of binding controller tandem and go into to link controller 300 for 240, one memory body 280, a casing management service.Though be illustrated in the different function squares, two or more, the square of all even functions can be merged into a wafer on real work of reality.In another embodiment of the present invention, this device end I/O device links controller 300 can link controller for an I/O device that meets other communications protocols, as: meet optical-fibre channel (fibre channel, FC), small computer system interface (small computer system interface, SCSI), the device end I/O device that accesses etc. of tandem advanced technology links controller.

This host side I/O device links controller 220 and is connected to this main computer unit 10 and this central processing circuit 240.It is an interface and an impact damper at this sas storage virtualization controller 200A and 10 of this main computer units that this host side I/O device links controller 220, and it can receive the output of being transmitted by this main frame and go into to ask with relevant data and with its mapping and/or be sent to this central processing circuit 240.This host side I/O device links controller 220 can be following any communication protocol: optical fiber (Fibre)/small computer system interface (Small Computer System Interface, SCSI)/support Internet SCSI (internet SCSI, iSCSI)/local-area network (Local AreaNetwork, LAN)/and the additional SCSI of tandem (serial-attached SCSI, SAS).

This central processing circuit (CPC) 240 mainly comprises a central processing unit (centralprocessing unit) and a central processing unit wafer set (figure does not show).This central processing unit wafer set is the interface that is provided to as other circuit in this central processing unit and this sas storage virtualization controller 200.When this this output from this main computer unit 10 of host side I/O device connection controller 220 of central processing circuit 240 reception arrivals goes into to ask, central processing circuit 240 can be exported this into going into the request analysis, and carry out certain operations and export into request to respond this, and, connect controller 220 via this host side I/O device and pass this main computer unit 10 back data and/or report and/or information that this sas storage virtualization controller 200A is asked.

Analyzing after the request that this main computer unit 10 is received, if it is that the request of reading and one or more operations are to be performed to think when response that institute receives, this central processing circuit 240 is from inner or obtain the data of being asked from this memory body 280 or in these two kinds of modes, and with this data transmission to this main computer unit 10.If the data of being asked can't obtain in inside or when not being present in this memory body 280, request is gone in output will connect controller 300 via the attached small computer system interface I/O device of this tandem, be sent in this DASD array 400, and this data of asking will be transferred into this memory body 280 by this DASD array 400, connect controller 220 via this host side I/O device then and reach this main computer unit 10.

Receive from what this main computer unit 10 was sent when this central processing circuit 240 and one to write request, after this request of analysis and carrying out one or more operations, this central processing circuit 240 links this data that controller 220 receives from this main computer unit 10 via this host side I/O device, and with this data storage to this memory body 280, will remove to this DASD array 400 in this data of this memory body 280 via this central processing circuit 240 then.This write request can for a write-back (write back) ask or be one write fully (write through) request.When this writes request is a write-back (write back) when request, and this exports into finishing report can be sent to main frame earlier, and this central processing circuit 240 just can be carried out this actual write operation after a while then; Otherwise, when this writes request and asks for writing (write through) fully, the data of this request is actual write to this DASD array 400 after, this exports into finishing report just can be sent to this main computer unit 10.

This memory body 280 is to be connected to this central processing circuit 240 and as an impact damper that is used for it, is transmitted in the data of 400 of this main computer unit 10 and this DASD arrays by this central processing circuit 240 with buffering.In one embodiment, this memory body 280 can be Dynamic Random Access Memory (dynamic random access memory, DRAM), particularly, this DRAM also can be the synchronous dynamic random-access memory body (synchronous dyamic random accessmemory, SDRAM).

This device end I/O device connects controller 300 and is connected to other other sas storage virtualization subsystem 20 of sas storage virtualization controller 200/ of this central processing circuit 240 and this DASD array 400/.The attached small computer system interface I/O device of this tandem link controller 300 be for an interface and impact damper between this sas storage virtualization controller 200A and this DASD array 400, and the output that sent out by this central processing circuit 240 of reception is gone into to ask with relevant data and is shone upon and/or transmit this and export into request and related data to this DASD array 400.This device end I/O device links controller 300, be to receive from the data of this central processing circuit 240 and control signal formatting again, link communication protocol in controller so that it meets use at this device end I/O device, and be sent to other other sas storage virtualization subsystem 20 of sas storage virtualization controller 200/ of this DASD array 400/.When the attached small computer system interface I/O device of a tandem links controller is when being used as this device end I/O device binding controller 300, it is this data and the control signal layout again that will receive from this central processing circuit 240, so that it meets the attached small computer system interface communication protocol of tandem.

This DASD 420 in this DASD array 400, when this that links that controller 300 receives these central processing circuits 240 via the attached small computer system interface I/O device of this tandem exported into request, the attached small computer system interface I/O device of this tandem links controller 300 execution certain operations and exports into request to respond this, and the data that will ask and/or report/and information to and/or information be sent to this central processing circuit 240, with and/or data and/or the report and/or the information of these central processing circuit 240 these requests of transmission certainly.In this DASD array 400, can provide and surpass this a kind of DASD 420, for example: when using the attached small computer system interface I/O device of this tandem to link controller, this DASD array 400 comprised attached small computer system interface DASD of tandem and tandem advanced technology access DASD both.

This casing management service circuit (EMS) the 360th attaches on the central processing circuit 240 and is used for managing the circuit that is equipped with on the casing of this DASD array 400, in addition, this casing management service circuit 360 is to be arranged at the outer of this sas storage virtualization controller 200 but not in it.In another kind of these sas storage virtualization subsystem 20 configurations, according to the actual demand of different product functionality, this casing management service circuit 360 can omit.

Shown in Fig. 2 B be for one according to the present invention one sas storage virtualization controller 200 and be connected to main computer unit 10 and the calcspar of one second embodiment of the configuration of this DASD array 400, wherein this sas storage virtualization controller 200 is to connect and dispose to main computer unit 10 and this DASD array 400 by being arranged at these sas storage virtualization controller 200 outer expanded circuits 340.In the present embodiment, this sas storage virtualization controller 200B comprises that a host side device is exported and links controller into the attached small computer system interface I/O device of binding controller 220, a central processing circuit 240, a memory body 280, a tandem and link up (redundant controllercommunication, RCC) binding controller 236 with a redundant manipulator.Though be illustration with different function squares, the square of part or all of these functions can be merged into a wafer.

Compare with sas storage virtualization controller 200A, in the present embodiment, it is to be embodied among the sas storage virtualization controller 200B that this redundant manipulator is linked up connection controller 236, to connect 240 to one second sas storage virtualization controller 200B of this central processing circuit.In addition, to link controller 300 be to be connected to other other sas storage virtualization subsystem 20 of sas storage virtualization controller 200/ of this DASD array 400/ through this expanded circuit 340 to the attached small computer system interface I/O device of this tandem.This expanded circuit 340 also is connected to this second sas storage virtualization controller 200B.In this configuration, the second sas storage virtualization controller 200B of one or more redundancies can attach on this sas storage virtualization controller 200B through this expanded circuit 340, and this DASD array 400 can be come access by this sas storage virtualization controller 200B through this expanded circuit 340.In addition, control/data information from this main computer unit 10 can be linked up binding controller 236 through this redundant manipulator, and be sent to this second sas storage virtualization controller 200B from this central processing circuit 240, if needs are arranged, more can further be sent to (figure does not indicate) on one the second DASD array 400.Because have the more than one second sas storage virtualization controller 200B, when on Redundant Array Of Independent Disks (RAID) 400, using the tandem advanced technology to access DASD, be connected to this tandem advanced technology at more than one sas storage virtualization controller and access under the situation of DASD 420, those sas storage virtualization controllers and this tandem advanced technology access and a tandem advanced technology can be set between DASD access duplex circuit and be used as a port selector switch.This situation will betide under for example following situation: those sas storage virtualization controllers 200B comprise this tandem advanced technology access in the sas storage virtualization system (sas storage virtualization subsystem) of DASD by configuration be construed as a redundant sas storage virtualization controller group the time.

This redundant manipulator is linked up and is linked controller 236 and can link controller 220 with this host side I/O device and be integrated into a single-chip IC (integrated circuit), and it comprises a plurality of port,input-outputs that comprise one or more host side ports and one or more device end port.In another embodiment, this redundant manipulator communication binding controller 236 can be integrated into a single-chip IC with this device end I/O device binding controller 300.In embodiment further, this host side I/O device links controller 220, this device end I/O device and links controller 300 and redundant manipulator and link up and link controller 236 and can both be integrated into a single-chip IC.In this real work, this single-chip I/O device links controller can comprise that use is at the host side port and the port,input-output at device end port and being used for and 200 port,input-outputs that are connected of this sas storage virtualization controller.

In the embodiment of Fig. 2 A-2B, this host side I/O device links controller 220 and this device end I/O device links controller 300 (SAS IO device interconnect controller300), can be with realizing with a kind of IC wafer, wherein, the I/O device binding port that this host side I/O device links in the controller 220 is that the host side I/O device links the port by configuration and setting, and the configuration that the I/O device in this device end I/O device binding controller 300 links the port then is set to device end I/O device binding port.In another embodiment, also can adopt a single-chip, its can by configuration and setting become to include the host side I/O device link port and device end I/O device link the port both, be to be couple to this main computer unit 10 and this entity storage device array 400 at the same time respectively.In addition, can adopt a single-chip, it can be become at one time by configuration and setting but comprise following all ports respectively: the host side I/O device that is used for being coupled to this main computer unit 10 links the port, be used for being coupled to the port that the device end I/O device of this entity storage device array 400 links the port and is used for being couple to one second sas storage virtualization controller 200B.

In another embodiment, this casing management circuit (EMS) 360 can be incorporated in the central processing circuit 240, and in addition, this casing management service circuit 360 also can be implemented into the attached small computer system interface I/O device of this tandem and link in the controller.

According to one embodiment of the invention, when the attached small computer system interface I/O device of a tandem links controller and is used as this device end I/O device in Fig. 2 A and links controller 300, the attached small computer system interface I/O device of this tandem links controller 300 can comprise that two peripheral elements link extension interface (PCI-X) to the attached small computer system interface controller 310 of tandem, as shown in Fig. 6 A.

Fig. 6 A is that this peripheral element of illustration links the calcspar of extension interface to an embodiment of the attached small computer system interface controller 310 of tandem.As shown in Fig. 6 A, it is to comprise that peripheral element binding extension interface 312 is connected to this central processing circuit 240 and the attached small computer system interface of a plurality of tandem port 600 is connected to this peripheral element binding extension interface 312 that interface to the attached small computer system interface controller 310 of tandem is extended in each peripheral element binding.It is to comprise that a bus-bar interface 318 is connected to the attached small computer system interface of tandem port 600 and a configuration initialization circuit 316 is used for storing the configuration of peripheral element binding extension interface to the attached small computer system interface controller 310 of tandem that this peripheral element links extension interface 312.The attached small computer system interface of this tandem port 600 can be connected to this DASD array 400 and/or this sas storage virtualization controller 200.

Fig. 8 A one is illustrated in the attached small computer system interface I/O device of tandem among Fig. 2 A and links controller 300 and 400 more detailed calcspars that connect of DASD array.Link the tandem attached small computer system interface port 600 of extension interface to the attached small computer system interface controller 310 of tandem via a peripheral element, this data and control signal are to be sent to this DASD 420.The attached small computer system interface of this tandem port 600 can directly be connected to tandem attached small computer system interface port of the attached small computer system interface DASD of a tandem 420A or a tandem advanced technology that tandem advanced technology accesses DASD 420S accesses the port.In addition, on the attached small computer system interface DASD of each tandem 420A, because two different ports (port 1 and port 2) are arranged, peripheral element link to extend interface to tandem on the attached small computer system interface controller 310 (even extend interface to tandem on the attached small computer system interface controller 310 to linking at different peripheral elements, but it is not presented among Fig. 8 A) two the attached small computer system interface of different tandems ports can see through two different ports and be connected to the attached small computer system interface DASD of tandem 420A, and this also has the redundant redundant port that is linked to this sas storage virtualization controller 200 right for the attached small computer system interface DASD of single tandem 420A forms one.

In another example, can link extension interface (PCI-X) at a peripheral element and use a peripheral element to link quick interface (PCI-Express) (abbreviating PCI-E as) to tandem advanced technology Access control device 310 places to tandem advanced technology Access control device (figure indicates).Link quick interface to tandem advanced technology Access control device at this peripheral element, a peripheral element links quick interface (figure indicates) and is used on this peripheral element binding extension interface 312.In another embodiment again, one PCI can be used to substitute peripheral element to tandem advanced technology Access control device and link the extension interface to tandem advanced technology Access control device 310, to tandem advanced technology Access control device, a PCI interface is to be used to substitute peripheral element to link extension interface 312 at this PCI.Being familiar with this operator in this technical field will be as can be known, and so substitute mode can be finished easily and have no difficulty.

Fig. 6 B is that an illustration peripheral element links the calcspar of extension interface to second embodiment of the attached small computer system interface controller 310 of tandem.It is to comprise that the attached small computer system interface expanded circuit 340 of a tandem is incorporated into this peripheral element and links extension interface to the attached small computer system interface controller 300 of tandem that this peripheral element links extension interface to the attached small computer system interface controller 300 of tandem.As shown in Fig. 6 E, the attached small computer system interface expanded circuit 340 of one tandem can be connected to another or in addition two border extension apparatus and/or a plurality of end device in fact as a border expander device (edge expander device) 315, as the attached small computer system interface of the tandem of one or more DASD 420 port.The attached small computer system interface expanded circuit 340 of one tandem also can be in fact as comprising one or more border extension apparatus groups, and each border extension apparatus group comprises a plurality of border extension apparatuses 315.In addition, the attached small computer system interface expanded circuit 340 of one tandem can be in fact as a fan-out expander device (fanout expander device) that comprises a plurality of border extension apparatus groups, each border extension apparatus group comprises a plurality of border extension apparatuses 315.

The attached small computer system interface expander device 315 of this tandem comprises that an extender connects square 3151, a management function square 3152 and a plurality of real layer 3154.This extender connects square and provides the functional to connect input and the output that each real layer is used for signal of a multiplex (MUX).This management function square 3152 is carried out tandem management agreement (serial managementprotocol, SMP) operation of an extender.See through expander device 315, a plurality of DASDs can be connected to an attached small computer system interface controller 310 of tandem, and this can promote the extendability of this sas storage virtualization subsystem storage volume; And seeing through the fan-out expander device, many border extension apparatus groups can attach on this sas storage virtualization subsystem to promote the capacity extension of this sas storage virtualization subsystem significantly.In addition, the plurality of hosts end is exported on the device 340 that binding can be connected to this expansion, and it is to be connected on the same or different sas storage virtualization controllers 200 that these host side are exported binding.

Fig. 6 D one is illustrated in the calcspar of an embodiment at the attached small computer system interface of this tandem port 600 among Fig. 6 A/6B.Shown in Fig. 6 D, the attached small computer system interface of this tandem port 600 comprises 5 parts: this transport layer 690, the attached small computer system interface of tandem port layer 700, the attached small computer system interface binder couse 710 of tandem, the attached small computer system interface of tandem real layer (PHYlayer) 720 and the attached small computer system interface physical layer of tandem (physical layer) 730.The attached small computer system interface physical layer 730 of this tandem comprises attached small computer system interface transmission of attached small computer system interface connector of this tandem and cable (Cable) and tandem and receiving circuit.The real layer 720 of the attached small computer system interface of this tandem comprises that coding plans and comprise to be with outer signal (outof band signal, OOB signal) as the replacement (reset) in fact layer of signal and speed coordination in proper order.The attached small computer system interface binder couse of this tandem is to be to be used for managing and being connected of the attached small computer system interface device of other tandem with the real layer of the attached small computer system interface of this tandem of control.The attached small computer system interface of this tandem port layer 700 is positioned between attached small computer system interface binder couse of one or more tandems and the one or more attached small computer system interface transport layer of tandem, and it receives via the attached small computer system interface binder couse of correct tandem or requirement for compiler and connecting.The attached small computer system interface transport layer 690 of this tandem comprises tandem small computer system interface agreement (the Serial SCSIProtocol that uses as tandem SCSI (Serial SCSI), SSP) transport layer, the tandem advanced technology that accesses application as the tandem advanced technology access tunnelling agreement (Serial ATA Tunneling Protocol, STP) tandem management agreement (serial management protocol, the SMP) transport layer of transport layer and conduct management application.

The attached small computer system interface of one tandem port 600 comprises one or more real layers.In this port, the attached small computer system interface of this tandem port 600 can be one " wide " port (wide port) if any more than one real layer; As a real layer only being arranged in this port, then be one " narrow " port (narrow port).Link the binding of 400 of controller 300 and expanded circuit 340 or DASD arrays at the attached small computer system interface I/O device of tandem, can be a narrow binding or wide binding.One wide binding can be construed as binding between wide port, two ends by configuration, to increase this transmitting bandwidth.

Fig. 6 F is that illustration one peripheral element links the calcspar of extension interface to attached small computer system interface controller 310 1 3rd embodiment of tandem.In this embodiment, the attached small computer system interface of this tandem port 600 of part is to be connected to expanded circuit 340, simultaneously the attached small computer system interface of this tandem port 600 of part is to be set to be connected directly to this DASD 420, and/or the attached small computer system interface of this tandem port 600 of part is connected to sas storage virtualization controller 200.In addition, this expanded circuit 340 can further be connected to this DASD 420 and/or this sas storage virtualization controller 200.

Physical layer 730 is to send out signal to DASD 420 via pair of differential signal line (differential signal lines) transmission line LTX+ and LTX-, and via another differential signal line is received line LRX+ and LRX-and receive DASD controller signals from DASD 420.Wherein each the group two signal line, for example LTX+ and LTX-, be indivedual simultaneously signal TX+/TX-that transmit the generating positive and negative voltage that is as the criterion with a reference voltage Vref, for example+V/-V or-voltage signal of V/+V, so their voltage difference is+2V or-2V, just can increase the quality of signal thus.On LRX+ and LRX-reception line, also can use identical method received signal RX+/RX-.

These real layer 720 definition 8b/10b coding and outer band signals.Receive all data bits from this physical layer 730, it will be decoded as this 8b/10b character and remove framework and begin (Start of Frame, SOF), cyclic redundancy check (CRC) code (Cyclic Redundancy Check, CRC), finish framework (End ofFrame, part EOF).The real layer 720 of the attached small computer system interface of one tandem uses these outer band signals with identification and begin to be connected to this operation binding of the real layer 720 of the attached small computer system interface of another tandem.After the attached small computer system interface of tandem links operation, the real layer 720 of the attached small computer system interface of this tandem sends the attached small computer system interface binder couse 710 of tandem and obtains the control of the real layer 720 of the attached small computer system interface of tandem with the signal of the attached small computer system interface binder couse of tandem and be used for communication, comprises that identification order, connection management transmit with framework.Two kinds of important structures are arranged herein, and it is attached attached small computer system interface elements of small computer system interface binder couse 710 employed tandems of tandem (SAS primitive) and the attached small computer system interface framework of tandem (SASframe).

One essence is made up of a single double-word group (double-word), its be by between a main frame and the device the simplest unit in the information of energy communication.When the bit group in the essence after coding, the type sample (pattern) that it produced just is not easy to be misread into the essence of other patterns or other type sample arbitrarily.Essence is mainly used in and transmits instant (real-time) state information, these state information be as the transmission of control information and coordinate this main frame and this device between communication.The first bit group of one essence is a special character (character).

One framework is made up of a plurality of double-word group, and this framework also is used as beginning with the beginning essence, is used as finishing to finish essence.The attached small computer system interface address of this tandem framework uses to be set up as yet when a connection and is beginning framework (SOAF with address, when start of address frame) reaching to start with address end framework (EOAF, end of address frame) conduct end.

Support the connection of three kinds of kenels in the attached small computer system interface of this tandem, it comprises the SSP framework used to the attached small computer system interface device of tandem, give the STP framework that tandem advanced technology take-away belt (conveyor) uses and the SMP framework of management usefulness.The framework of SSP and SMP with " framework begins " and (SOF, start of frame) be used as beginning and with " finish framework " (EOF, end of frame) be used as finishing.

One cyclic redundancy check (CRC) code (CRC) is for being right after the last non-essence double-word group before finishing essence, and cyclic redundancy check (CRC) code gets for the content computing according to framework, sees through peripheral element binding extension interface and goes into to ask information will carry out the cyclic redundancy check (CRC) code inspection to the attached small computer system interface controller 310 of tandem in all output of central processing circuit 240 and 420 communications of DASD.Therefore, (for example damaging to the casual data the transmission period of entity storage device by sas storage virtualization controller 200, may be because the event of noise) can be detected and be restored, the catastrophic data of having avoided contingent (potential) data to be written into the erroneous section of medium is damaged situation, and it may be to go into due to the damage of segment base plinth position, purpose media areas in the request data and/or media areas segment length because be included in original output that this data is damaged the feelings row.

Fig. 6 C one is illustrated in this DASD array 400 among Fig. 6 A to this peripheral element and links and extend the one first real calcspar done of interface to connection configuration of the attached small computer system interface controller 310 of tandem.The attached small computer system interface expanded circuit 340 of this tandem is not to be disposed at PCI to the attached small computer system interface controller 310 of tandem in Fig. 6 A, link the device that separate of extension interface but attach to this peripheral element, as an interface/controller to this DASD array 400 or the attached small computer system interface expanded circuit 340 of another tandem to the attached small computer system interface controller 310 of tandem as one.

Fig. 6 G one is illustrated in this DASD array 400 among Fig. 6 A to this peripheral element and links and extend the one second real calcspar done of interface to connection configuration of the attached small computer system interface controller 310 of tandem.The attached small computer system interface expanded circuit 340 of this tandem is not to be disposed at this PCI to the attached small computer system interface controller 310 of tandem in Fig. 6 A, but as a device that separates.In the present embodiment, the attached small computer system interface of this tandem port 600 of part is to be connected to this DASD 420, simultaneously the attached small computer system interface of this tandem port 600 of part is to be provided as being connected directly to this DASD 420, and/or the attached small computer system interface of the tandem port 600 of part is to be connected to sas storage virtualization controller 200.In addition, this expanded circuit 340 can further be connected to this DASD 420 and/or this sas storage virtualization controller 200.

Fig. 8 B one is illustrated among Fig. 2 B or the more detailed calcspar that connects between the square of this expanded circuit 340 and other functions in Fig. 6 B/6C/6G.This expanded circuit 340 can link controller 300 from the attached small computer system interface I/O device of tandem and receive this order/data and transmit this order/data to DASD array 400 and/or to another sas storage virtualization controller 200B.

Though in the present embodiment, the attached small computer system interface controller 300 of above-mentioned this tandem of mentioning comprises that two peripheral elements link the extension interface to the attached small computer system interface controller 310 of tandem, according to the present invention, in other embodiment, the attached small computer system interface controller 300 of this tandem also can comprise one or more controller 310, this on its usefulness consider, engineering is considered and/or cost or market are considered and decided.Being familiar with this operator in this technical field will be as can be known, the above adjustment and to consider be can finish easily and have no difficulty.

Shown in Figure 7ly be according to this central processing circuit 240 of the present invention and this central processing circuit 240 and be connected to other the illustration calcspar of mac function of this sas storage virtualization controller 200.

Figure 7 shows that this first embodiment of this central processing circuit block central processing circuit 240A, comprising central processing unit wafer set/coordination engine 224A (CPU chipset/parityengine) is arranged, one central processing unit 242 (CPU), one ROM 246 (read only memory, ROM), one non-volatile random access memory 248 (non-volatile random accessmemory, NVRAM), one liquid crystal display module 350 (liquid crystal display module, LCD module), reach a casing management service circuit (EMS) 360.Wherein this central processing unit 242 can be, for example, and a Power PC central processing unit, and ROM 246 can be a fast flash memory bank, is used for storing basic input/output (BIOS) and/or other formulas.Non-volatile random access memory 248 is to be used for storing this entity storage device array to export relevent information into the operation executing state, when going into to take place before operation is not finished as yet undesired power-off in order to output, does check and uses.350 of liquid crystal display modules are to be used for the mode of operation of display subsystem, and casing management service circuit 360 is used for controlling the power supply of this entity storage device array and carries out other management.ROM 246, non-volatile random access memory 248, liquid crystal display module 350 and casing management service circuit 360 all are linked to central processing unit wafer set/coordination engine 224A via an X-bus-bar (X-bus).This central processing unit wafer set/coordination engine 224A is a wherein real central processing unit wafer set of making to have a coordination engine.Be embodied in this coordination engine in this central processing unit wafer set can carry out comprise a specific magnetic disc array level same bit function to respond the instruction of central processing unit 242.Certainly, this coordination engine can cut out to carry out the function of No Parity under certain conditions, for example, and in the example of a Redundant Array Of Independent Disks (RAID) grade 0.In addition, this central processing unit wafer set 244A and coordination engine can be realized with two other wafers of branch.

One further among the embodiment, this coordination engine is omitted.This sas storage virtualization controller 200 or sas storage virtualization subsystem 20 as do not need this same bit function, this central processing circuit 240 can be operated under the coordination engine not having.For example, for a No Parity function only be a bundle disc player analog controller or one have this one only be a bundle disc player analog controller only be a bundle disc player analog controller subsystem, or Redundant Array Of Independent Disks (RAID) grade 1 controller or R have the subsystem of this Redundant Array Of Independent Disks (RAID) grade 1 controller, do not need same bit function, so can omit with bit function.In another program, be to carry out this same bit function by central processing unit, it is to carry out certain coordination formula or coding with this central processing unit, and need not similarly be the hardware of the special use of coordination engine, then the coordination engine can omit.May be a low usefulness but low cost solution so with bit function.

At again further among the embodiment of this central processing circuit 240, be can provide to carry out an information protection engine and carry out an information protection function, this information protection function is to surpass and/or to be different from the information protection function that bit function together can provide.For example, this information protection engine has an ECC (error correcting code, ECC) function.

At again further among the embodiment of this central processing circuit 240, this ROM 246 is to be made in embedded mode in this central processing unit wafer set/ROM wafer.Perhaps, this ROM is to integrate to be provided in this central processing unit wafer set/ROM wafer.

At again further among the embodiment of this central processing circuit 240, central processing unit for the mode that embeds to be made in this embedded central processing unit/central processing unit wafer set wafer.

The above only shows some variations with central processing circuit 240 Fig. 7 and this, the variation of other of this central processing circuit 240 and/or change and can easily produce the person that has come for the personage who is familiar with technical field of the present invention all should be thought of as some of the present invention.For example, according to the trend of SoC (SOC, system on chip), all mac function can be integrated and form the single module of a wafer or embedding in this central processing circuit 240.

Sas storage virtualization controller 200 mentioned above can be a Redundant Array Of Independent Disks (RAID) sas storage virtualization controller, and it is construed as by configuration and is used for carrying out the Redundant Array Of Independent Disks (RAID) function and uses in a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or a DASD 400 with the storage loads data of no use attach to Redundant Array Of Independent Disks (RAID) front-end control head in it.In addition, sas storage virtualization controller mentioned above one only be a bundle disc player sas storage virtualization controller, it is construed as to be used for carrying out by configuration and only is a bundle disc player function and only is to use in a bundle disc player sas storage virtualization subsystem one.

In addition, only be in a bundle disc player sas storage virtualization subsystem one, this only is that a bundle disc player sas storage virtualization controller can be for comprising a microprocessor but not the expanded circuit of a central processing unit.

Please refer to Fig. 3 A, be a embodiment shown in Fig. 3 A according to storage virtualization subsystem architecture configuration of the present invention construction (configuration), this storage virtualization subsystem architecture comprise a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-1 and a plurality of only be that a bundle disc player sas storage virtualization subsystem 20-2,20-3 and 20-4 are connected on this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-1.

In the example of Fig. 3 A, each sas storage virtualization subsystem 20 comprises that a sas storage virtualization controller 200 and entity storage device (PSD) array 400 are attached on this sas storage virtualization controller 200 in order to as the data storage space.Please note, though adopting three among Fig. 3 A only is a bundle disc player sas storage virtualization subsystem 20-1,20-2,20-3 and 20-4 are attached to this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-1 in regular turn and are gone up the example of narrating as hereinafter, in another embodiment, constitute those sas storage virtualization subsystem 20 numbers of this storage virtualization subsystem architecture, can be for wanting the sas storage virtualization subsystem 20 of any number of two at least, and each sas storage virtualization subsystem 20 can be a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem, an one Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem, or one only be a bundle disc player sas storage virtualization subsystem.As this sas storage virtualization subsystem 20 is that a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or is when only being a bundle disc player sas storage virtualization subsystem, it comprises that a sas storage virtualization controller 200 and an entity storage device array 400 (with as this DASD array 400) attach on this sas storage virtualization subsystem 200 in order to as the data storage space, and this situation comprises a sas storage virtualization controller 200 and does not have entity storage device array 400 thereon attached when being a Redundant Array Of Independent Disks (RAID) front-end control.

In Fig. 3 A, this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-1 comprises that a Redundant Array Of Independent Disks (RAID) sas storage virtualization controller 200-1 carries out Redundant Array Of Independent Disks (RAID) grade 0,1,2,3,4,5 or 6 or the Redundant Array Of Independent Disks (RAID) function of the combination of above-mentioned grade.This Redundant Array Of Independent Disks (RAID) deposit virtualization controller 200-1 comprise a pair of port P1-1 and P1-3 in order to be connected to a main computer unit 10, a pair of port P1-2 and P1-4 in order to be connected to one its back only be a bundle disc player sas storage virtualization subsystem 20-2, and several ports in order to be connected to this entity storage device array 400-1.

Shown in Fig. 3 A, each only be a bundle disc player sas storage virtualization subsystem 20-2,20-3 and 20-4 comprise that respectively one only is a bundle disc player sas storage virtualization controller 200-2, sas storage virtualization controller 200-3 and sas storage virtualization controller 200-4, this only is a bundle disc player sas storage virtualization controller 200-2, sas storage virtualization controller 200-3 and sas storage virtualization controller 200-4 comprise a pair of port P2-1 and P2-3 respectively, P3-1 and P 3-3 and P4-1 and P4-3 are in order to be connected in front a sas storage virtualization subsystem 20, a pair of port P2-2 and P2-4, P3-2 and P3-4 and P4-2 and P4-4 only are a bundle disc player sas storage virtualization subsystem in order to be connected to one in its back respectively, and several ports are in order to be connected to this entity storage device array 400.

This sas storage virtualization subsystem 20-1 is connected to this main computer unit 10, and wherein two of sas storage virtualization controller 200-1 port P1-1, P1-3 are connected to the one first main frame port and the one second main frame port of this main computer unit 10 respectively.This main computer unit 10 can be a host computer or a main frame sas storage virtualization controller, and this entity storage device array 400-1 is attached on this sas storage virtualization controller 200-1.

This sas storage virtualization subsystem 20-1 is connected to this sas storage virtualization subsystem 20-2, wherein two port P1-2, the P1-4 of this sas storage virtualization controller 200-1 are connected to two port P2-1, the P2-3 of this sas storage virtualization controller 200-2 respectively, and this entity storage device array 400-2 is attached on this sas storage virtualization controller 200-2.

This sas storage virtualization subsystem 20-2 is attached on the sas storage virtualization subsystem 20-3, wherein two port P2-2, the P2-4 of this sas storage virtualization controller 200-2 are connected to two port P3-1, the P3-3 of this sas storage virtualization controller 200-3 respectively, and this entity storage device array 400-3 is attached on this sas storage virtualization controller 200-3.

This sas storage virtualization subsystem 20-3 is attached on the sas storage virtualization subsystem 20-4, wherein two port P3-2, the P3-4 of this sas storage virtualization controller 200-3 are connected to two port P4-1, the P4-3 of this sas storage virtualization controller 200-4 respectively, and this entity storage device array 400-3 is attached on this sas storage virtualization controller 200-4.

In the example of Fig. 3 A, though port P4-2, P4-4 are not used under the sky, what must know is that this two port can be used in and further be connected to another sas storage virtualization subsystem 20.

This storage virtualization subsystem architecture is construed as by configuration: two data access paths that separate are to be formed between those sas storage virtualization subsystems and those data access paths are to be connected between those sas storage virtualization subsystems with binding and to reach.This first path is that port P1-2, P2-1, P2-2, P3-1, P3-2, P4-1 and the internal circuit by those bindings and those sas storage virtualization controllers 200-1, sas storage virtualization controller 200-2, sas storage virtualization controller 200-3, sas storage virtualization controller 200-4 formed; And being port P1-4, P2-3, P2-4, P3-3, P3-4, P4-3 and internal circuit by those bindings and those sas storage virtualization controllers 200-1, sas storage virtualization controller 200-2, sas storage virtualization controller 200-3, sas storage virtualization controller 200-4, this second path formed.Just in case when one of those paths person obstruction or trouble or failure, another path can be by this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-1 employing to be accessed in the data/information in this storage virtualization subsystem architecture.Going into instruction when an output is to be sent to this when only being a bundle disc player sas storage virtualization subsystem 20-2,20-3 or 20-4 by Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem sas storage virtualization controller 200-1, for example be to export into order in response to a main frame, one of those data access paths person will be used and transmit this and export into instruction, this is exported will be along adopted path into instruction, advance according to the order of connection of those sas storage virtualization subsystems in this path, up to the sas storage virtualization subsystem that arrives this destination.

Though showing a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-1 and three among Fig. 3 A only is a bundle disc player sas storage virtualization subsystem 20-2,20-3 and 20-4, it can constitute this storage virtualization subsystem architecture for the sas storage virtualization subsystem 20 of any number (at least two) and any form (comprise Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem, a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem and only be a bundle disc player sas storage virtualization subsystem).

This storage virtualization subsystem architecture mentioned above, though be redundant configuration construction and have two other paths of branch with the access data, but following shortcoming is arranged: when a sas storage virtualization subsystem is off-line, those sas storage virtualization subsystems in the sas storage virtualization subsystem back that attaches to this off-line, not having any one can be by access.Some possible cause of the sas storage virtualization subsystem of this off-line is that this sas storage virtualization subsystem is a trouble or failure, or this sas storage virtualization subsystem is the former thereby off-line in order to safeguard.For example, when this sas storage virtualization subsystem 20-2 was off-line, we not only lost the access to sas storage virtualization subsystem 20-2, also lost the access to sas storage virtualization subsystem 20-3 and sas storage virtualization subsystem 20-4.

Please refer to Fig. 3 B, is to be another embodiment according to the configuration construction of a subsystem architecture of the present invention shown in it.This subsystem architecture comprises that at least two sas storage virtualization subsystems link together with the method shown in a kind of Fig. 3 of being different from A, and each sas storage virtualization subsystem 20 can only be an a bundle disc player sas storage virtualization subsystem for a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem, a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem or.In the example of Fig. 3 B be show a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-1 and a plurality of only be that a bundle disc player sas storage virtualization subsystem 20-2,20-3 and 20-4 are connected on this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-1.

In the example of Fig. 3 B, each sas storage virtualization subsystem 20 comprises that a sas storage virtualization controller 200 and an entity storage device array 400 attach on the sas storage virtualization controller 200 in order to the storage area of giving information.This Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-1 comprises that a Redundant Array Of Independent Disks (RAID) sas storage virtualization controller 200-1 is to carry out Redundant Array Of Independent Disks (RAID) grade 0,1,2,3,4,5 or 6 or the Redundant Array Of Independent Disks (RAID) function of the combination of above-mentioned grade.This Redundant Array Of Independent Disks (RAID) sas storage virtualization controller 200-1 comprise a pair of port P1-1 and P1-3 in order to be connected to a main computer unit 10, a pair of port P1-2 and P1-4 in order to be connected to one be connected on its back only be a bundle disc player sas storage virtualization subsystem, and several ports in order to be connected to this entity storage device array 400.

As shown in Fig. 3 B, each only is a bundle disc player sas storage virtualization subsystem 20-2, only be a bundle disc player sas storage virtualization subsystem 20-3 and only be that a bundle disc player sas storage virtualization subsystem 20-4 comprises that respectively only is a bundle disc player sas storage virtualization controller 200-2, sas storage virtualization controller 200-3 and sas storage virtualization controller 200-4, this only is a bundle disc player sas storage virtualization controller 200-2, sas storage virtualization controller 200-3 and sas storage virtualization controller 200-4 comprise a pair of port P2-1 and P2-3 respectively, P3-1 and P3-3, and P4-1 and P4-3 are in order to be connected in front a sas storage virtualization subsystem 20, a pair of port P2-2 and P2-4, P3-2 and P3-4, and P4-2 and P4-4 only are a bundle disc player sas storage virtualization subsystem in order to be connected to one in its back, and several ports are in order to be connected to this entity storage device array 400.

This sas storage virtualization subsystem 20-1 is connected to this main computer unit 10, and wherein two port P1-1, the P1-3 of this sas storage virtualization controller 200-1 are connected to the one first main frame port and the one second main frame port of this main computer unit 10 respectively.This main computer unit 10 can be a host computer or a main frame sas storage virtualization controller, and this entity storage device array 400-1 is attached on this sas storage virtualization controller 200-1.

In present embodiment Fig. 3 B, though this each sas storage virtualization subsystem 20 is the same with the sas storage virtualization subsystem 20 of this storage virtualization subsystem architecture among Fig. 3 A, but the configuration construction of these two kinds of storage virtualization subsystem architectures is also inequality, that is to say, syndeton among Fig. 3 B between those sas storage virtualization subsystems, be and Fig. 3 A in syndeton between those sas storage virtualization subsystems be inequality.

This sas storage virtualization subsystem 20-1 is connected on this sas storage virtualization subsystem 20-2 and this sas storage virtualization subsystem 20-4, wherein two port P1-2, the P1-4 of this sas storage virtualization controller 200-1 are connected to the port P2-1 of this sas storage virtualization controller 200-2 and the port P4-3 of this sas storage virtualization controller 200-4 respectively, and this entity storage device array 400-2 is attached on this sas storage virtualization controller 200-2.

This sas storage virtualization subsystem 20-2 also is connected on this sas storage virtualization subsystem 20-3, wherein two port P2-2, the P2-3 of this sas storage virtualization controller 200-2 are connected to two port P3-1, the P3-4 of this sas storage virtualization controller 200-3 respectively, and this entity storage device array 400-3 is attached on this sas storage virtualization controller 200-3.

This sas storage virtualization subsystem 20-3 also is connected on this sas storage virtualization subsystem 20-4, wherein two of sas storage virtualization controller 200-3 port P3-2, P3-3 are connected to two port P4-1, the P4-4 of sas storage virtualization controller 200-4 among the sas storage virtualization subsystem 20-4 respectively, and entity storage device array 400-3 is attached on the sas storage virtualization controller 200-4.

Though in the present embodiment, use under port P2-4, the P4-2 sky, what must know is that this two port can be used in and further is connected to another sas storage virtualization subsystem 20.

This storage virtualization subsystem architecture is construed as by configuration: two data access paths that separate are to be formed between those sas storage virtualization subsystems and those data access paths are to be connected between those sas storage virtualization subsystems with binding and to reach.This first path is that port P1-2, P2-1, P2-2, P3-1, P3-2, P4-1 and the internal circuit by those bindings and those sas storage virtualization controllers 200-1, sas storage virtualization controller 200-2, sas storage virtualization controller 200-3, sas storage virtualization controller 200-4 formed; And being port P1-4, P4-3, P4-4, P3-3, P3-4, P2-3 and internal circuit by those bindings and those sas storage virtualization controllers 200-1, sas storage virtualization controller 200-2, sas storage virtualization controller 200-3, sas storage virtualization controller 200-4, this second path formed.Just in case when one of those paths person obstruction or trouble or failure, another path can be by this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem employing to be accessed in the data/information in this storage virtualization subsystem architecture.Going into instruction when an output is to be sent to this when only being a bundle disc player sas storage virtualization subsystem 20-2,20-3 or 20-4 by the Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem, for example be to export into order in response to a main frame, one of those data access paths person will be used and transmit this and export into instruction, this is exported will be along adopted path into instruction, advance according to the order of connection of those sas storage virtualization subsystems in this path, up to the sas storage virtualization subsystem that arrives this destination.

Though it only is a bundle disc player sas storage virtualization subsystem 20-2,20-3 and 20-4 that a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-1 and three are arranged shown in Fig. 3 B, it can constitute this storage virtualization subsystem architecture for the sas storage virtualization subsystem 20 of any number (at least two) and any form (comprise Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem, a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem and only be a bundle disc player sas storage virtualization subsystem).

Compare with the configuration construction shown in Fig. 3 A, above-mentioned mentioned this storage virtualization subsystem architecture configuration construction, be to have an advantage: when only be a bundle disc player sas storage virtualization subsystem 20-1,20-2 and 20-3 one of them only be a bundle disc player sas storage virtualization subsystem when being off-line, other JBOS sas storage virtualization subsystem still can be by access.For example, when sas storage virtualization subsystem 20-2 was off-line, we only lose the access of sas storage virtualization subsystem 20-2 and this sas storage virtualization subsystem 20-3 and this sas storage virtualization subsystem 20-4 still can be by accesses.

This is because this two data access approach is construed as the different order of connection by configuration under this storage virtualization subsystem architecture, that is to say: first order of connection of those sas storage virtualization subsystems 20 in this first path is to be different from second order of connection of those sas storage virtualization subsystems 20 in this second path.In first path, those only are that the order that a bundle disc player sas storage virtualization subsystem 20-2,20-3 and 20-4 are connected to this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-1 is, this only is that a bundle disc player sas storage virtualization subsystem 20-2 is first, only being that a bundle disc player sas storage virtualization subsystem 20-3 is next, only is that a bundle disc player sas storage virtualization subsystem 20-4 is last order; In second path, those only are that the order that a bundle disc player sas storage virtualization subsystem is connected to this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem is, only be a bundle disc player sas storage virtualization subsystem 20-4 be first, only be a bundle disc player sas storage virtualization subsystem 20-3 for next, only be that a bundle disc player sas storage virtualization subsystem 20-2 is last order, this only is that a bundle disc player sas storage virtualization subsystem is connected to this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem, and this is fully in contrast to this first order.

Please refer to Fig. 4 A, is another embodiment according to the configuration construction of this storage virtualization subsystem architecture of the present invention shown in it.This storage virtualization subsystem architecture comprises at least two sas storage virtualization subsystems 20, each sas storage virtualization subsystem 20 is to have the sas storage virtualization controller 200 of a pair of redundant configuration construction and connect in a particular manner, and those sas storage virtualization subsystems 20 each can be a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem, a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem or only is an a bundle disc player sas storage virtualization subsystem.

In the example of Fig. 4 A be show a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-5 and a plurality of only be that a bundle disc player sas storage virtualization subsystem 20-6,20-7 and 20-8 are connected on this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-5.In the example of Fig. 4 A, this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-5 comprises that a pair of Redundant Array Of Independent Disks (RAID) sas storage virtualization controller 200-1A and Redundant Array Of Independent Disks (RAID) sas storage virtualization controller 200-1B are to carry out Redundant Array Of Independent Disks (RAID) grade 0,1,2,3,4,5 or 6 or the Redundant Array Of Independent Disks (RAID) function of the combination of above-mentioned grade.This sas storage virtualization controller 200-1A and sas storage virtualization controller 200-1B are construed as redundant form by configuration and make just in case a sas storage virtualization controller among this sas storage virtualization controller 200-1A and this sas storage virtualization controller 200-1B lost efficacy or during fault, and this sas storage virtualization controller 200-1A and this sas storage virtualization controller 200-1B another sas storage virtualization controller among both will be taken over originally by this inefficacy or the performed all operations of fault sas storage virtualization controller.Each comprises that a port only is that a bundle disc player sas storage virtualization subsystem and several port in order to be connected to this entity storage device array 400 in order to be connected to one in its back in order to be connected to main computer unit 10, a port Redundant Array Of Independent Disks (RAID) sas storage virtualization controller 200-1A and Redundant Array Of Independent Disks (RAID) sas storage virtualization controller 200-1B.

As shown in Fig. 4 A, only be a bundle disc player sas storage virtualization subsystem 20-6,20-7 and 20-8 each comprise that a pair of only is a bundle disc player sas storage virtualization controller 200.This only is that a bundle disc player sas storage virtualization controller 200 comprises that a port only is that a bundle disc player sas storage virtualization subsystem and several port in order to be connected to this entity storage device array 400 in order to be connected to one in its back in order to be connected to a sas storage virtualization subsystem 20, port in front.

This sas storage virtualization subsystem 20-5 is connected to this main computer unit 10, and wherein the port P1-1 of sas storage virtualization controller 200-1A is connected to 10 1 first main frame ports of this main computer unit; The port P1-1 of sas storage virtualization controller 200-1B is connected to 10 1 second main frame ports of this main computer unit.This main computer unit 10 can be a host computer or a main frame sas storage virtualization controller, and this entity storage device array 400-1 is attached to this sas storage virtualization controller 200-1A and this sas storage virtualization controller 200-1B on both.

This sas storage virtualization subsystem 20-5 is connected on this sas storage virtualization subsystem 20-6, and wherein the port P1-2 of this sas storage virtualization controller 200-1A is connected to the port P2-1 of this sas storage virtualization controller 200-2A; The port P1-2 of this sas storage virtualization controller 200-1B is connected to the port P2-1 of this sas storage virtualization controller 200-2B, and this entity storage device array 400-2 is attached to this sas storage virtualization controller 200-2A and this sas storage virtualization controller 200-2B on both.

This sas storage virtualization subsystem 20-6 is connected on this sas storage virtualization subsystem 20-7, and wherein the port P2-2 of this sas storage virtualization controller 200-2A is connected to the port P3-1 of this sas storage virtualization controller 200-3A; The port P2-2 of this sas storage virtualization controller 200-2B is connected to the port P3-1 of this sas storage virtualization controller 200-3B, and this entity storage device array 400-3 is attached to this sas storage virtualization controller 200-3A and this sas storage virtualization controller 200-3B

This sas storage virtualization subsystem 20-7 is connected on this sas storage virtualization subsystem 20-8, wherein the port P3-2 of this sas storage virtualization controller 200-3A port P3-2 that is connected to the port P4-1 of this sas storage virtualization controller 200-4A and this sas storage virtualization controller 200-3B is connected to the port P4-1 of this sas storage virtualization controller 200-4B, and this entity storage device array 400-4 is attached to this sas storage virtualization controller 200-4A and this sas storage virtualization controller 200-4B on both.

Though in the present embodiment, do not use under the port P4-2 sky of the port P4-2 of this sas storage virtualization controller 200-4A and this sas storage virtualization controller 200-4B, but what must know is that this two port can be used in and further be connected to another sas storage virtualization subsystem 20.

This storage virtualization subsystem architecture is construed as by configuration: two data access paths that separate are to be formed between those sas storage virtualization subsystems and those data access paths are to be connected between those sas storage virtualization subsystems with binding and to reach.This first path is formed by those ports and the internal circuit of those bindings with those sas storage virtualization controllers 200-1A, sas storage virtualization controller 200-2A, sas storage virtualization controller 200-3A, sas storage virtualization controller 200-4A; This second path is formed by those ports and the internal circuit of those bindings with those sas storage virtualization controllers 200-1B, sas storage virtualization controller 200-2B, sas storage virtualization controller 200-3B, sas storage virtualization controller 200-4B.Just in case when one of those paths person obstruction or trouble or failure, another path can be by this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem employing to be accessed in the data/information in this storage virtualization subsystem architecture.Going into instruction when an output is to be sent to this when only being a bundle disc player sas storage virtualization subsystem 20-6,20-7 or 20-8 by the Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem, for example be to export into order in response to a main frame, one of those data access paths person will be used and transmit this and export into instruction, this is exported will be along adopted path into instruction, advance according to the order of connection of those sas storage virtualization subsystems in this path, up to the sas storage virtualization subsystem that arrives this destination.

Though showing a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-5 and three among Fig. 4 A only is a bundle disc player sas storage virtualization subsystem 20-6,20-7 and 20-8, it can constitute this storage virtualization subsystem architecture for the sas storage virtualization subsystem 20 of any number (at least two) and any form (comprise Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem, a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem and only be a bundle disc player sas storage virtualization subsystem).

Compare with the embodiment among Fig. 3 A, present embodiment has following advantage: because there are two sas storage virtualization controller 200-1 to be configured in this sas storage virtualization subsystem 20-5, just in case this sas storage virtualization controller 200-1A and this sas storage virtualization controller 200-1B wherein one when being off-line, can finish by wherein another sas storage virtualization controller 200-1 of sas storage virtualization controller 200-1A and this sas storage virtualization controller 200-1B to this sas storage virtualization subsystem 20-5 or via the access of this sas storage virtualization subsystem 20-5.Similarly, right at any this sas storage virtualization subsystem 20-6, sas storage virtualization subsystem 20-7 and the redundant sas storage virtualization controller among the sas storage virtualization subsystem 20-8, just in case both wherein one when being off-line, those sas storage virtualization subsystems 20-6,20-7 and 20-8 still can be by accesses.In addition, because this redundant fashion is to finish via first path of this first group of sas storage virtualization controller in this sas storage virtualization subsystem and with second path of this second group of sas storage virtualization controller, wherein this second group of sas storage virtualization controller is to be different from this first group of sas storage virtualization controller, so the reception port of half number only need be set in this sas storage virtualization controller, and this has reduced the cost of sas storage virtualization controller.In addition, when cost becomes important consideration on the market (always being like this usually) sooner or later, according to redundant fashion of the present invention, be to utilize two paths only are set in this storage virtualization subsystem architecture reach, wherein a paths is by this first group of sas storage virtualization controller (sas storage virtualization controller 200-1A, 200-2A, 200-3A, and 200-4A), and another paths is by this second group of sas storage virtualization controller (sas storage virtualization controller 200-1B, 200-2B, 200-3B, and 200-4B), as shown in Fig. 4 A.

Though this subsystem architecture mentioned above comprises that the sas storage virtualization controller 200 of a pair of redundant configuration construction is to have two paths that separate with the access data, but still have a shortcoming: when a sas storage virtualization subsystem is off-line, be attached at after the sas storage virtualization subsystem of this off-line sas storage virtualization subsystem none can be by access.For example, when this sas storage virtualization subsystem 20-6 is off-line for a certain reason, this main computer unit 10 and this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-5 will lose the access to sas storage virtualization subsystem 20-7 and sas storage virtualization subsystem 20-8.

Please refer to Fig. 4 B, is another embodiment according to the configuration construction of storage virtualization subsystem architecture of the present invention shown in it.This storage virtualization subsystem architecture comprises at least two sas storage virtualization subsystems 20, each sas storage virtualization subsystem 20 is to have the sas storage virtualization controller 200 of a pair of redundant configuration construction and connect in a particular manner and different with connected mode among Fig. 4 A, and those sas storage virtualization subsystems 20 each can be a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem, a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem or only is an a bundle disc player sas storage virtualization subsystem.In the example of Fig. 4 B be show a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-5 and a plurality of only be that a bundle disc player sas storage virtualization subsystem 20-6,20-7 and 20-8 are connected to this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-5.

In the example of Fig. 4 B, each sas storage virtualization subsystem 20 comprises that a pair of sas storage virtualization controller 200-1A and 200-1B and an entity storage device array 400 are attached to this sas storage virtualization subsystem in order to the storage area of giving information.This Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-5 comprises that a pair of Redundant Array Of Independent Disks (RAID) sas storage virtualization controller 200-1A and Redundant Array Of Independent Disks (RAID) sas storage virtualization controller 200-1B are to carry out Redundant Array Of Independent Disks (RAID) grade 0,1,2,3,4,5 or 6 or the Redundant Array Of Independent Disks (RAID) function of the combination of above-mentioned grade.This sas storage virtualization controller 200-1A and this sas storage virtualization controller 200-1B are construed as redundant form by configuration and make just in case a sas storage virtualization controller among this sas storage virtualization controller 200-1A and this sas storage virtualization controller 200-1B lost efficacy or during fault, and this sas storage virtualization controller 200-1A and this sas storage virtualization controller 200-1B another sas storage virtualization controller among both will be taken over originally by this inefficacy or the performed all operations of fault sas storage virtualization controller.Each comprises that a port only is that a bundle disc player sas storage virtualization subsystem and several port in order to be connected to this entity storage device array 400 in order to be connected to one in its back in order to be connected to main computer unit 10, a port Redundant Array Of Independent Disks (RAID) sas storage virtualization controller 200-1A and Redundant Array Of Independent Disks (RAID) sas storage virtualization controller 200-1B.

As shown in Fig. 4 B, only be a bundle disc player sas storage virtualization subsystem 20-6,20-7 and 20-8 each to comprise a pair of only be a bundle disc player sas storage virtualization controller 200, this only is that a bundle disc player sas storage virtualization controller 200 comprises that a port only is that a bundle disc player sas storage virtualization subsystem and several port in order to be connected to this entity storage device array 400 in order to be connected to one in its back in order to be connected in front a sas storage virtualization subsystem 20, a port.

This sas storage virtualization subsystem 20-5 is connected to this main computer unit 10, and wherein the port P1-1 of this sas storage virtualization controller 200-1A is connected to one first main frame port of this main computer unit 10; The port P1-1 of this sas storage virtualization controller 200-1B is connected to one second main frame port of this main computer unit 10.This main computer unit 10 can be a host computer or a main frame sas storage virtualization controller, and this entity storage device array 400-1 is attached to this sas storage virtualization controller 200-1A and this sas storage virtualization controller 200-1B on both.

In the present embodiment of Fig. 4 B, though this each sas storage virtualization subsystem 20 is the same with the sas storage virtualization subsystem 20 of storage virtualization subsystem architecture among Fig. 4 A, but the configuration construction of these two kinds of storage virtualization subsystem architectures is also inequality, that is to say that the syndeton in Fig. 4 B between those sas storage virtualization subsystems is inequality with the syndeton of those sas storage virtualization subsystems in Fig. 4 A.

This sas storage virtualization subsystem 20-5 also is connected to this sas storage virtualization subsystem 20-6 and this sas storage virtualization subsystem 20-8, and wherein this sas storage virtualization controller 200-1A among this sas storage virtualization subsystem 20-5 is that this sas storage virtualization controller 200-2A and this sas storage virtualization controller 200-1B among this sas storage virtualization subsystem 20-5 that is connected to by a binding among this sas storage virtualization subsystem 20-6 is this sas storage virtualization controller 200-4B that is connected to by a binding among this sas storage virtualization subsystem 20-8.

This sas storage virtualization subsystem 20-6 is connected to this sas storage virtualization subsystem 20-7, and wherein this sas storage virtualization controller 200-2A among this sas storage virtualization subsystem 20-6 is that this sas storage virtualization controller 200-3A and this sas storage virtualization controller 200-2B among this sas storage virtualization subsystem 20-6 that is connected to by a binding among this sas storage virtualization subsystem 20-7 is this sas storage virtualization controller 200-3B that is connected to by a binding among this sas storage virtualization subsystem 20-7.

This sas storage virtualization subsystem 20-7 is connected to this sas storage virtualization subsystem 20-8, and wherein this sas storage virtualization controller 200-3A among this sas storage virtualization subsystem 20-7 is that this sas storage virtualization controller 200-4A and this sas storage virtualization controller 200-3B among this sas storage virtualization subsystem 20-7 that is connected to by a binding among this sas storage virtualization subsystem 20-8 is this sas storage virtualization controller 200-4B that is connected to by a binding among this sas storage virtualization subsystem 20-8.

This sas storage virtualization controller 200-1A is connected to this sas storage virtualization controller 200-2A, and wherein the port P1-2 of this sas storage virtualization controller 200-1A is connected to the reception port P2-1 of this sas storage virtualization controller 200-2A.

This sas storage virtualization controller 200-1B is connected to this sas storage virtualization controller 200-4B, and wherein the port P1-2 of this sas storage virtualization controller 200-1B is connected to the reception port P4-1 of this sas storage virtualization controller 200-4B.

This sas storage virtualization controller 200-2A is connected to this sas storage virtualization controller 200-3A, and wherein the port P2-2 of this sas storage virtualization controller 200-2A is connected to the reception port P3-1 of this sas storage virtualization controller 200-3A.

This sas storage virtualization controller 200-3A is connected to this sas storage virtualization controller 200-4A, and wherein the port P3-2 of this sas storage virtualization controller 200-3A is connected to the reception port P4-1 of this sas storage virtualization controller 200-4A.

This sas storage virtualization controller 200-4B is connected to this sas storage virtualization controller 200-3B, and wherein the port P4-2 of this sas storage virtualization controller 200-4B is connected to the reception port P3-1 of this sas storage virtualization controller 200-3B.

This sas storage virtualization controller 200-3B is connected to this sas storage virtualization controller 200-2B, and wherein the port P3-2 of this sas storage virtualization controller 200-3B is connected to the reception port P2-1 of this sas storage virtualization controller 200-2B.

This entity storage device array 400-2 is attached to this sas storage virtualization controller 200-2A and this sas storage virtualization controller 200-2B on both; This entity storage device array 400-3 is attached to this sas storage virtualization controller 200-3A and this sas storage virtualization controller 200-3B on both; This entity storage device array 400-4 is attached to this sas storage virtualization controller 200-4A and this sas storage virtualization controller 200-4B on both.

Though in this example shown in Fig. 4 B, do not use under the port P2-2 sky of the port P4-2 of this sas storage virtualization controller 200-4A and this sas storage virtualization controller 200-2B, but what must know is, if needs are arranged, this two ports P4-2 and P2-2 can be used in and further be connected to another sas storage virtualization subsystem 20.

This storage virtualization subsystem architecture is construed as by configuration: two data access paths that separate are to be formed between those sas storage virtualization subsystems and those data access paths are to be connected between those sas storage virtualization subsystems with binding and to reach.This first path is that those ports and the internal circuit by those bindings and those sas storage virtualization controllers 200-1A, sas storage virtualization controller 200-2A, sas storage virtualization controller 200-3A, sas storage virtualization controller 200-4A formed; This second path is that those ports and the internal circuit by those bindings and those sas storage virtualization controllers 200-1B, sas storage virtualization controller 200-2B, sas storage virtualization controller 200-3B, sas storage virtualization controller 200-4B formed.Just in case when one of those paths person obstruction or trouble or failure, another path can be by this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem employing to be accessed in the data/information in this storage virtualization subsystem architecture.Going into instruction when an output is to be sent to this when only being a bundle disc player sas storage virtualization subsystem 20-6,20-7 or 20-8 by the Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem, for example be to export into order in response to a main frame, one of those data access paths person will be used and transmit this and export into instruction, this is exported will be along adopted path into instruction, advance according to the order of connection of those sas storage virtualization subsystems in this path, up to the sas storage virtualization subsystem that arrives this destination.

Though showing a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-5 and three among Fig. 4 B only is a bundle disc player sas storage virtualization subsystem 20-6,20-7 and 20-8, it can constitute this storage virtualization subsystem architecture for the sas storage virtualization subsystem 20 of any number (at least two arbitrary numbers) and any form (comprise Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem, Redundant Array Of Independent Disks (RAID) front-end control head and only be a bundle disc player sas storage virtualization subsystem).

Compare with the configuration construction of embodiment shown in Fig. 4 A, this above-mentioned mentioned storage virtualization subsystem architecture configuration construction has following advantage: when one only be a bundle disc player sas storage virtualization subsystem when being off-line, other only be that a bundle disc player sas storage virtualization subsystem still can be by access.For example, when this sas storage virtualization subsystem 20-6 was off-line, we only lost the access to this sas storage virtualization subsystem 20-6, and this sas storage virtualization subsystem 20-7 and this sas storage virtualization subsystem 20-8 still can be by accesses.

This is because this two data access approach is construed as the different order of connection by configuration under this storage virtualization subsystem architecture, that is to say: first order of connection of those sas storage virtualization subsystems in this first path is to be different from second order of connection of those sas storage virtualization subsystems in this second path.In first path, those only are that the order that a bundle disc player sas storage virtualization subsystem is connected to this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-5 is, this only is that a bundle disc player sas storage virtualization subsystem 20-6 is first, this only is a bundle disc player sas storage virtualization subsystem 20-7 for next, this only is that a bundle disc player sas storage virtualization subsystem 20-8 is last order; In second path, those only are that the order that a bundle disc player sas storage virtualization subsystem is connected to this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-5 is, this only is that a bundle disc player sas storage virtualization subsystem 20-8 is first, this only is a bundle disc player sas storage virtualization subsystem 20-7 for next, this only is that a bundle disc player sas storage virtualization subsystem 20-6 is last order, and this is fully in contrast to this first order.

Same, when cost becomes important consideration on the market (always being like this usually) sooner or later, according to redundant fashion of the present invention, be to utilize two paths only are set in this storage virtualization subsystem architecture reach, wherein a paths is by this first group of sas storage virtualization controller (sas storage virtualization controller 200-1A, 200-2A, 200-3A, and 200-4A), and another paths is by this second group of sas storage virtualization controller (sas storage virtualization controller 200-1B, 200-2B, 200-3B, and 200-4B), as shown in Fig. 4 B.

Please refer to Fig. 5 A, is another embodiment according to the configuration construction of storage virtualization subsystem architecture of the present invention shown in it.This storage virtualization subsystem architecture comprises at least two sas storage virtualization subsystems 20, each sas storage virtualization subsystem 20 is to have a pair of sas storage virtualization controller 200, be construed as redundant form and with specific being linked in sequence and this sas storage virtualization controller 200 is configurations, and its each sas storage virtualization subsystem 20 can only be an a bundle disc player sas storage virtualization subsystem for a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem, a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem or.Fig. 5 A be show a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-9 and a plurality of only be that a bundle disc player sas storage virtualization subsystem 20-10,20-11 and 20-12 are connected to this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-9 in regular turn.

In Fig. 5 A, this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-9 comprises that a pair of Redundant Array Of Independent Disks (RAID) sas storage virtualization controller 200-1A and Redundant Array Of Independent Disks (RAID) deposit virtualization controller 200-1B to carry out Redundant Array Of Independent Disks (RAID) grade 0,1,2,3,4,5 or 6 or the Redundant Array Of Independent Disks (RAID) function of the combination of above-mentioned grade.This sas storage virtualization controller 200-1A and this sas storage virtualization controller 200-1B are construed as redundant form by configuration, and make that just in case this sas storage virtualization controller 200-1A and this a sas storage virtualization controller 200-1B sas storage virtualization controller among both lost efficacy or during fault this sas storage virtualization controller 200-1A and this sas storage virtualization controller 200-1B another sas storage virtualization controller among both will be taken over originally by these inefficacy or all performed behaviour of fault sas storage virtualization controller.Each comprises that a pair of port only is that a bundle disc player sas storage virtualization subsystem and several port in order to be connected to this entity storage device array 400 in order to be connected to one in its back in order to be connected to main computer unit 10, a pair of port Redundant Array Of Independent Disks (RAID) sas storage virtualization controller 200-1A and sas storage virtualization controller 200-1B.

As shown in Fig. 5 A, each only be a bundle disc player sas storage virtualization subsystem 20-10,20-11 and 20-12 to comprise a pair of only be a bundle disc player sas storage virtualization controller 200, this only is that a bundle disc player sas storage virtualization controller 200 comprises that a pair of port only is that a bundle disc player sas storage virtualization subsystem and several port in order to be connected to this entity storage device array 400 in order to be connected to one in its back in order to be connected in front a sas storage virtualization subsystem 20, a pair of port.

This storage virtualization subsystem architecture comprises two groups of sas storage virtualization controllers, first group of sas storage virtualization controller comprise sas storage virtualization controller 200-1A, sas storage virtualization controller 200-2A,

Sas storage virtualization controller 200-3A, sas storage virtualization controller 200-4A; Second group of sas storage virtualization controller comprise sas storage virtualization controller 200-1B, sas storage virtualization controller 200-2B,

Sas storage virtualization controller 200-3B, sas storage virtualization controller 200-4B.In each group of first and second sas storage virtualization controller group, those sas storage virtualization controllers are and connect with identical method at those sas storage virtualization controllers shown in Fig. 3 A.

This sas storage virtualization subsystem 20-9 is connected to this main computer unit 10, and two port P1-1, P1-3 wherein storing virtual-change controller 200-1A are connected to one first and one second main frame port of main computer unit 10 respectively; Two port P1-1, the P1-3 of sas storage virtualization controller 200-1B are connected to one the 3rd and one the 4th main frame port of main computer unit 10 respectively.This main computer unit 10 can be a host computer or a main frame sas storage virtualization controller, and this entity storage device array 400-1 is attached on this sas storage virtualization controller 200-1A and this sas storage virtualization controller 200-1B.

This sas storage virtualization subsystem 20-9 is connected to this sas storage virtualization subsystem 20-10, and wherein two port P1-2, the P1-4 of this sas storage virtualization controller 200-1A are connected to two port P2-1, the P2-3 of this sas storage virtualization controller 200-2A respectively; Two port P1-2, the P1-4 of this sas storage virtualization controller 200-1B are connected two port P2-1, P2-3 of sas storage virtualization controller 200-2B respectively.This entity storage device array 400-2 is attached to this sas storage virtualization controller 200-2A and this sas storage virtualization controller 200-2B on both.

This sas storage virtualization subsystem 20-10 is connected to this sas storage virtualization subsystem 20-11, and wherein two port P2-2, the P2-4 of this sas storage virtualization controller 200-2A are connected to two port P3-1, the P3-3 of this sas storage virtualization controller 200-3A respectively; Two port P2-2, the P2-4 of this sas storage virtualization controller 200-2B are connected to two port P3-1, the P3-3 of this sas storage virtualization controller 200-3B respectively, and this entity storage device array 400-3 is attached to this sas storage virtualization controller 200-3A and this sas storage virtualization controller 200-3B on both.

This sas storage virtualization subsystem 20-11 is connected to this sas storage virtualization subsystem 20-12, and wherein two port P3-2, the P3-4 of this sas storage virtualization controller 200-3A are connected to two port P4-1, the P4-3 of this sas storage virtualization controller 200-4A; Two port P3-2, the P3-4 of this sas storage virtualization controller 200-3B are connected to two port P4-1, the P4-3 of this sas storage virtualization controller 200-4B, and this entity storage device array 400-4 is attached to this sas storage virtualization controller 200-4A and sas storage virtualization controller 200-4B on both.

In present embodiment, though port P4-2, the P4-4 of this sas storage virtualization controller 200-4A and this sas storage virtualization controller 200-4B are not used under the sky, but what must know is that it further is to be connected to another sas storage virtualization subsystem 20 that this two port P4-2, P4-4 can be used in.

This storage virtualization subsystem architecture is construed as by configuration: four data access paths that separate are to be formed between those sas storage virtualization subsystems and those data access paths are to be connected between those sas storage virtualization subsystems and to reach with binding, and wherein those first and second paths are to form and be connected between those sas storage virtualization controllers 200-1A, sas storage virtualization controller 200-2A, sas storage virtualization controller 200-3A, the sas storage virtualization controller 200-4A; Those the 3rd and the 4th paths are to form and be connected between those sas storage virtualization controllers 200-1B, sas storage virtualization controller 200-2B, sas storage virtualization controller 200-3B, the sas storage virtualization controller 200-4B.

This first path is that port P1-2, P2-1, P2-2, P3-1, P3-2, P4-1 and the internal circuit by those bindings and those sas storage virtualization controllers 200-1A, sas storage virtualization controller 200-2A, sas storage virtualization controller 200-3A, sas storage virtualization controller 200-4A formed; This second path is that port P1-4, P2-3, P2-4, P3-3, P3-4, P4-3 and the internal circuit by those bindings and those sas storage virtualization controllers 200-1A, sas storage virtualization controller 200-2A, sas storage virtualization controller 200-3A, sas storage virtualization controller 200-4A formed.Just in case first and second path is an obstruction or trouble or failures wherein, another path can be by this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-9 employing to be accessed in the data/information in this storage virtualization subsystem architecture.

This Third Road directly is that port P1-2, P2-1, P2-2, P3-1, P3-2, P4-1 and the internal circuit by those bindings and those sas storage virtualization controllers 200-1B, sas storage virtualization controller 200-2B, sas storage virtualization controller 200-3B, sas storage virtualization controller 200-4B formed; The 4th path is that port P1-4, P2-3, P2-4, P3-3, P3-4, P4-3 and the internal circuit by those bindings and those sas storage virtualization controllers 200-1B, sas storage virtualization controller 200-2B, sas storage virtualization controller 200-3B, sas storage virtualization controller 200-4B formed.Just in case the 3rd and the 4th path is an obstruction or trouble or failures wherein, another path can be by this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-9 employing to be accessed in the data/information in this storage virtualization subsystem architecture.

Though showing a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-9 and three among Fig. 5 A only is a bundle disc player sas storage virtualization subsystem 20-10,20-11 and 20-12, it can constitute this storage virtualization subsystem architecture for the sas storage virtualization subsystem 20 of any number (at least two) and any form (comprise Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem, a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem and only be a bundle disc player sas storage virtualization subsystem).

When this main computer unit 10 was connected on the storage virtualization subsystem architecture, the data/information that is accessed in this storage virtualization subsystem architecture can be adopted by this main computer unit in four different paths.Significantly, this storage virtualization subsystem architecture is strong than the storage virtualization subsystem architecture of Fig. 3 A or Fig. 4 A.Yet this storage virtualization subsystem architecture still has following shortcoming; When a sas storage virtualization subsystem was off-line, not having any one sas storage virtualization subsystem that is attached at the sas storage virtualization subsystem back of this off-line can be by access.For example, when being off-line because of this sas storage virtualization subsystem of certain reason 20-10, this main computer unit 10 and this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-9 will lose the access to sas storage virtualization subsystem 20-11 and sas storage virtualization subsystem 20-12.This be because those only be a bundle disc player sas storage virtualization subsystem 20-10,20-11 and 20-12 to the order of connection of this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-9 in four kinds of paths, all be identical.That is to say, those only are that the order of connection that a bundle disc player sas storage virtualization subsystem sas storage virtualization subsystem 20-10,20-11 and 20-12 are connected to this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-9 all is: only be that a bundle disc player sas storage virtualization subsystem 20-10 is first, only be that a bundle disc player sas storage virtualization subsystem 20-11 is next, at last then for only being a bundle disc player sas storage virtualization subsystem 20-12.

Please refer to Fig. 5 B, is another embodiment for storage virtualization subsystem architecture configuration according to the present invention construction shown in it.This storage virtualization subsystem architecture comprises at least two sas storage virtualization subsystems 20, each sas storage virtualization subsystem 20 is to have the sas storage virtualization controller 200 of a pair of redundant configuration construction and connect in a particular manner and different with connected mode among Fig. 5 A, and those sas storage virtualization subsystems 20 each can be a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem, a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem or only is an a bundle disc player sas storage virtualization subsystem.Be to show in the present embodiment in the example of Fig. 4 B, though each sas storage virtualization subsystem 20 among each sas storage virtualization subsystem 20 and Fig. 5 A in the storage virtualization subsystem architecture is identical, but the configuration construction of these two kinds of storage virtualization subsystem architectures is different, that is to say, the connection of the sas storage virtualization subsystem of this storage virtualization subsystem architecture in different paths is closed in Fig. 5 B, is that the connection pass that is different from the sas storage virtualization subsystem of this storage virtualization subsystem architecture in different paths among Fig. 5 A is.

In the example of Fig. 5 A, this storage virtualization subsystem architecture comprises two groups of sas storage virtualization controllers, and first group of sas storage virtualization controller comprises sas storage virtualization controller 200-1A, sas storage virtualization controller 200-2A, sas storage virtualization controller 200-3A, sas storage virtualization controller 200-4A; Second group of sas storage virtualization controller comprises sas storage virtualization controller 200-1B, sas storage virtualization controller 200-2B, sas storage virtualization controller 200-3B, sas storage virtualization controller 200-4B.Organize this first and second in each group of sas storage virtualization controller, wherein the connected mode of this sas storage virtualization controller is identical with the connected mode of those sas storage virtualization controllers shown in Fig. 3 B.In each sas storage virtualization subsystem, this entity storage device array 400 be connected in this sas storage virtualization subsystem those sas storage virtualization controllers both.

In each sas storage virtualization controller group of sas storage virtualization controller of first group and second group, the configuration construction of this storage virtualization subsystem architecture is all identical, except the sas storage virtualization controller in this first group of sas storage virtualization controller is to be sas storage virtualization controller 200-1A, sas storage virtualization controller 200-2A, sas storage virtualization controller 200-3A, sas storage virtualization controller 200-4A, the sas storage virtualization controller in this second group of sas storage virtualization controller sas storage virtualization controller then is with sas storage virtualization controller 200-1B, sas storage virtualization controller 200-2B, sas storage virtualization controller 200-3B, sas storage virtualization controller 200-4B substitutes.The configuration construction of the storage virtualization subsystem architecture in this first group of sas storage virtualization controller is to be described as follows.

This sas storage virtualization subsystem 20-9 is connected to this sas storage virtualization subsystem 20-10 and this sas storage virtualization subsystem 20-12, and wherein two port P1-2, the P1-4 of this sas storage virtualization controller 200-1A are connected to the port P2-1 of this sas storage virtualization controller 200-2A and the port P4-3 of sas storage virtualization controller 200-4A respectively.

This sas storage virtualization subsystem 20-10 also is connected to this sas storage virtualization subsystem 20-11, and wherein two port P2-2, the P2-3 of this sas storage virtualization controller 200-2A are connected to two port P2-1, the P3-4 of sas storage virtualization controller 200-3A respectively.

This sas storage virtualization subsystem 20-11 is connected to this sas storage virtualization subsystem 20-12, and wherein two port P3-2, the P3-3 of this sas storage virtualization controller 200-3A are connected to two port P4-1, the P4-4 of this sas storage virtualization controller 200-4A respectively.

In the present embodiment, though use under the port P4-2, P4-4 sky, what must know is that this two port P4-2, P4-4 can be used in and further be connected to another sas storage virtualization subsystem 20.

This first path is that port P1-2, P2-1, P2-2, P3-1, P3-2, P4-1 and the internal circuit by those bindings and those sas storage virtualization controllers 200-1A, sas storage virtualization controller 200-2A, sas storage virtualization controller 200-3A, sas storage virtualization controller 200-4A formed; This second path is that port P1-4, P4-3, P4-4, P3-3, P3-4, P2-3 and the internal circuit by those bindings and those sas storage virtualization controllers 200-1A, sas storage virtualization controller 200-2A, sas storage virtualization controller 200-3A, sas storage virtualization controller 200-4A formed.Just in case first and second path is an obstruction or trouble or failures wherein, another path can be by this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-9 employing to be accessed in the data/information in this storage virtualization subsystem architecture.

This Third Road directly is that port P1-2, P2-1, P2-2, P3-1, P3-2, P4-1 and the internal circuit by those bindings and those sas storage virtualization controllers 200-1B, sas storage virtualization controller 200-2B, sas storage virtualization controller 200-3B, sas storage virtualization controller 200-4B formed; The 4th path is that port P1-4, P4-3, P4-4, P3-3, P3-4, P2-3 and the internal circuit by those bindings and those sas storage virtualization controllers 200-1B, sas storage virtualization controller 200-2B, sas storage virtualization controller 200-3B, sas storage virtualization controller 200-4B formed.Just in case the 3rd and the 4th path is an obstruction or trouble or failures wherein, another path can be by this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-9 employing to be accessed in the data/information in this storage virtualization subsystem architecture.

Though showing three among Fig. 5 B only is a bundle disc player sas storage virtualization subsystem, in this storage virtualization subsystem architecture, it can have two or three above only is a bundle disc player sas storage virtualization subsystem.

In Fig. 5 B, first with Third Road footpath in, those only are that the order of connection that a bundle disc player sas storage virtualization subsystem is connected to this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-5 is: the firstth, and only be a bundle disc player sas storage virtualization subsystem 20-10, next is only to be a bundle disc player sas storage virtualization subsystem 20-11, is only to be a bundle disc player sas storage virtualization subsystem 20-12 at last; And in the second and the 4th path, those only are that the order of connection that a bundle disc player sas storage virtualization subsystem is connected to this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 20-5 is: the firstth, and only be a bundle disc player sas storage virtualization subsystem 20-12, next is only to be a bundle disc player sas storage virtualization subsystem 20-11, is only to be a bundle disc player sas storage virtualization subsystem 20-10 at last.The advantage of the storage virtualization subsystem architecture of the present embodiment in Fig. 5 B be for, what provide that different access path attaches to an off-line with arrival only is that behind a bundle disc player sas storage virtualization subsystem 20 this only is a bundle disc player sas storage virtualization subsystem 20.Therefore, the embodiment that is better than among Fig. 5 A is compared in the storage virtualization subsystem architecture configuration construction of present embodiment; Embodiment among Fig. 5 A be for, when one only be a bundle disc player sas storage virtualization subsystem when being off-line, all data access paths all can fault.For example, when this sas storage virtualization subsystem 20-10 is off-line, therefore this sas storage virtualization subsystem 20-11 and this sas storage virtualization subsystem 20-12 can not directly come access with Third Road via first, but this sas storage virtualization subsystem 20-11 and this sas storage virtualization subsystem 20-12 still can be by coming access via the second and the 4th path.

(not shown) among the embodiment further in storage virtualization subsystem architecture configuration of the present invention construction, in each path in four data access paths, those sas storage virtualization subsystems can have the different order of connection, for example, this sas storage virtualization subsystem connects to the order of sas storage virtualization subsystem 20-12 to sas storage virtualization subsystem 20-10 to sas storage virtualization subsystem 20-11 according to sas storage virtualization subsystem 20-9 in the first data access path; This sas storage virtualization subsystem connects to the order of sas storage virtualization subsystem 20-10 to sas storage virtualization subsystem 20-12 to sas storage virtualization subsystem 20-11 according to sas storage virtualization subsystem 20-9 in the second data access path; This sas storage virtualization subsystem connects to the order of sas storage virtualization subsystem 20-12 to sas storage virtualization subsystem 20-11 to sas storage virtualization subsystem 20-10 according to sas storage virtualization subsystem 20-9 in the 3rd data access path; This sas storage virtualization subsystem connects to the order of sas storage virtualization subsystem 20-10 to sas storage virtualization subsystem 20-10 to sas storage virtualization subsystem 20-12 according to sas storage virtualization subsystem 20-9 in the 4th data access path.

(not shown) in the embodiment of another this storage virtualization subsystem architecture configuration construction of the present invention, in some data access path, this sas storage virtualization subsystem can have the identical order of connection; And when in other data access path, this sas storage virtualization subsystem can have the different order of connection, for example, this sas storage virtualization subsystem connects to sas storage virtualization subsystem 20-12 to sas storage virtualization subsystem 20-10 to sas storage virtualization subsystem 20-11 according to sas storage virtualization subsystem 20-9 in the first and the 3rd data access path; This sas storage virtualization subsystem is got in the path in second data of depositing, and connects to sas storage virtualization subsystem 20-10 to sas storage virtualization subsystem 20-12 to sas storage virtualization subsystem 20-11 according to sas storage virtualization subsystem 20-9; This sas storage virtualization subsystem connects to sas storage virtualization subsystem 20-12 to sas storage virtualization subsystem 20-11 to sas storage virtualization subsystem 20-10 according to sas storage virtualization subsystem 20-9 in the 4th access path.

In the present embodiment, what each was connected to this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem only is a bundle disc player sas storage virtualization subsystem, has at least once to attach on this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem for first sas storage virtualization subsystem in this data access path.This first and Third Road footpath in, sas storage virtualization subsystem 20-10 is connected to the sas storage virtualization subsystem of sas storage virtualization subsystem 20-9 for first; In second path, sas storage virtualization subsystem 20-12 is connected to the sas storage virtualization subsystem of sas storage virtualization subsystem 20-9 for first; In the 4th path, sas storage virtualization subsystem 20-11 is connected to the sas storage virtualization subsystem of sas storage virtualization subsystem 20-9 for first.

In Fig. 5 C another embodiment again of storage virtualization subsystem architecture configuration of the present invention construction.In each data access path, first sas storage virtualization subsystem that is attached to this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem is inequality.For example, in a storage virtualization subsystem architecture, it is for comprising a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem 0 and only being a bundle disc player sas storage virtualization subsystem 1, it only is a bundle disc player sas storage virtualization subsystem 2, it only is a bundle disc player sas storage virtualization subsystem 3, only be that four of a bundle disc player sas storage virtualization subsystem 4 grades only are a bundle disc player sas storage virtualization subsystems, and this only to be the order of connection in four data access paths in a bundle disc player sas storage virtualization subsystem be construed as follows by configuration: in first path, sas storage virtualization subsystem 0 to sas storage virtualization subsystem 1 to sas storage virtualization subsystem 2 to sas storage virtualization subsystem 3 to sas storage virtualization subsystem 4; In second path, sas storage virtualization subsystem 0 to sas storage virtualization subsystem 2 to sas storage virtualization subsystem 3 to sas storage virtualization subsystem 4 to sas storage virtualization subsystem 1; In Third Road footpath, sas storage virtualization subsystem 0 to sas storage virtualization subsystem 3 to sas storage virtualization subsystem 4 to sas storage virtualization subsystem 1 to sas storage virtualization subsystem 2; In the 4th path, sas storage virtualization subsystem 0 to sas storage virtualization subsystem 4 to sas storage virtualization subsystem 1 to sas storage virtualization subsystem 2 to sas storage virtualization subsystem 3.Each sas storage virtualization subsystem can comprise that one or more sas storage virtualization controllers is connected to this entity storage device array that belongs to this sas storage virtualization subsystem.When comprising two or more sas storage virtualization controllers, this data access path in this sas storage virtualization subsystem is construed as through different sas storage virtualization controllers by configuration in a sas storage virtualization subsystem.

In above embodiment, though use the attached small computer system interface communications protocol of tandem to be used as connection and the binding between those sas storage virtualization subsystems between this sas storage virtualization subsystem with real those ports of doing, but must know the time, the agreement of other tandem signal transport communication, as: optical-fibre channel communications protocol or tandem advanced technology communication protocol etc. such as access and also can both be used among the present invention.Using optical-fibre channel only is in the storage virtualization subsystem architecture of a bundle disc player, be used for only be the sas storage virtualization controller of a bundle disc player sas storage virtualization subsystem can be a kind of port bypass resistance (Port Bypass Circuit, PBC).In a PBC, it does not have central processing unit or microprocessor not to have active member to be included in wherein even.In the present embodiment, this kind use only is to be used for this in a bundle disc player sas storage virtualization subsystem only to be the PBC that a bundle disc player sas storage virtualization subsystem is connected with other sas storage virtualization subsystem, also to be defined as a sas storage virtualization controller at one.

The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the structure that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, but every content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.

Claims

1. storage virtualization subsystem architecture is characterized in that it includes:

A plurality of sas storage virtualization subsystems, each sas storage virtualization subsystem comprise at least one sas storage virtualization controller;

One first data access path and one second data access path, each is construed as this two data access path by this storage virtualization subsystem architecture by configuration,

Wherein, these two kinds of paths are configuration construction in the following manner: in this first path, those sas storage virtualization subsystems are to be linked in sequence together with one first, in this second path, those sas storage virtualization subsystems are to be linked in sequence together with one second, and this second order is to be different from this first order.

2. storage virtualization subsystem architecture according to claim 1 is characterized in that wherein this at least one sas storage virtualization controller is to have a device end I/O device that meets the attached small computer system interface agreement of tandem to link controller.

3. storage virtualization subsystem architecture according to claim 1, it is characterized in that wherein the type of this sas storage virtualization subsystem is to be the Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem,, a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem or only be a bundle disc player sas storage virtualization subsystem or wherein both or three's combination.

4. storage virtualization subsystem architecture according to claim 2, it is characterized in that wherein when this sas storage virtualization subsystem be this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or this when only being a bundle disc player sas storage virtualization subsystem, this sas storage virtualization subsystem comprises that more an entity storage device array attaches on this at least one sas storage virtualization controller.

5. storage virtualization subsystem architecture according to claim 1 is characterized in that wherein each sas storage virtualization controller of this at least one sas storage virtualization controller comprises that one first port is used for this first path and one second port is used for this second path.

6 storage virtualization subsystem architectures according to claim 5 is characterized in that wherein this at least one sas storage virtualization controller only comprises a sas storage virtualization controller.

7. storage virtualization subsystem architecture according to claim 1, each includes one first sas storage virtualization controller and one second sas storage virtualization controller to it is characterized in that wherein those sas storage virtualization subsystems, and both are established in this sas storage virtualization subsystem for redundant configuration, this first data access path is those the first sas storage virtualization controllers through those sas storage virtualization subsystems simultaneously, and this second data access path is those the second sas storage virtualization controllers through those sas storage virtualization subsystems.

8. according to claim 1 or 7 described storage virtualization subsystem architectures, wherein this first data access path is that those sas storage virtualization subsystems are linked in sequence with following: at first be connected to one first sas storage virtualization subsystem, next is connected to one second sas storage virtualization subsystem, then connect backward in regular turn, till last sas storage virtualization subsystem; And this second data access path is that those sas storage virtualization subsystems are linked in sequence with following: at first be connected to this first sas storage virtualization subsystem, next is connected to this last sas storage virtualization in system, then connect forward in regular turn, till this second sas storage virtualization subsystem.

9. storage virtualization subsystem architecture according to claim 8, it is characterized in that wherein this first sas storage virtualization subsystem is to be a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem, and other sas storage virtualization subsystem is for only being a bundle disc player sas storage virtualization subsystem.

10. storage virtualization subsystem architecture according to claim 7, it is characterized in that wherein this first sas storage virtualization controller comprises one first port and one second port, and this second sas storage virtualization controller comprises one the 3rd port and one the 4th port, and in each of those sas storage virtualization subsystems, this first path and this second path are through two ports in these four ports.

11. storage virtualization subsystem architecture according to claim 7, it is characterized in that wherein this first sas storage virtualization controller comprises one first port and one second port, and this second sas storage virtualization controller comprises one the 3rd port and one the 4th port, and in each of those sas storage virtualization subsystems, this first path and this second path are through two ports in these four ports, this storage virtualization subsystem architecture more comprises one the 3rd data access path and one the 4th data access path simultaneously, is through two other port in these four ports.

12. a computer system that realizes sas storage virtualization is characterized in that including:

One host computer and a storage virtualization subsystem architecture are thereon attached;

This storage virtualization subsystem architecture comprises a plurality of sas storage virtualization subsystems, and one first data access path and one second data access path, and each sas storage virtualization subsystem comprises at least one sas storage virtualization controller;

Each is construed as this two data access path by this storage virtualization subsystem architecture by configuration;

13. computer system according to claim 12, it is characterized in that wherein this at least one sas storage virtualization controller is to have a device end I/O device that meets the attached small computer system interface agreement of tandem to link controller, and this device end I/O device binding controller is to comprise the attached small computer system interface of at least one tandem port.

14. computer system according to claim 12, it is characterized in that wherein the type of this sas storage virtualization subsystem is to be the Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem,, a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem or only be a bundle disc player sas storage virtualization subsystem or wherein both or three's combination.

15. computer system according to claim 14, it is characterized in that wherein when this sas storage virtualization subsystem be this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or this when only being a bundle disc player sas storage virtualization subsystem, this sas storage virtualization subsystem comprises that more an entity storage device array attaches on this at least one sas storage virtualization controller.

16. computer system according to claim 12 is characterized in that wherein each sas storage virtualization controller of this at least one sas storage virtualization controller comprises that one first port is used for this first path and one second port is used for this second path.

17. computer system according to claim 16 is characterized in that wherein this at least one sas storage virtualization controller only comprises a sas storage virtualization controller.

18. computer system according to claim 12, it is characterized in that wherein this first sas storage virtualization subsystem is to be a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem, and other sas storage virtualization subsystem is for only being a bundle disc player sas storage virtualization subsystem, this first data access path is that those sas storage virtualization subsystems are linked in sequence with following simultaneously: at first be connected to one first sas storage virtualization subsystem, next is connected to one second sas storage virtualization subsystem, then connect backward in regular turn, till last sas storage virtualization subsystem; And this second data access path is that those sas storage virtualization subsystems are linked in sequence with following: at first be connected to this first sas storage virtualization subsystem, next is connected to this last sas storage virtualization subsystem, then connect forward in regular turn, till this second sas storage virtualization subsystem.

19. computer system according to claim 12, each includes one first sas storage virtualization controller and one second sas storage virtualization controller to it is characterized in that wherein those sas storage virtualization subsystems, and both are established in this sas storage virtualization subsystem for redundant configuration, this first data access path is those the first sas storage virtualization controllers through those sas storage virtualization subsystems simultaneously, and this second data access path is those the second sas storage virtualization controllers through those sas storage virtualization subsystems.

20. computer system according to claim 19, it is characterized in that wherein this first sas storage virtualization controller comprises one first port and one second port, and this second sas storage virtualization controller comprises one the 3rd port and one the 4th port, and in each of those sas storage virtualization subsystems, this first path and this second path are through two ports in these four ports, this storage virtualization subsystem architecture more comprises one the 3rd data access path and one the 4th data access path simultaneously, is through two other port in these four ports.

21. the configuration constructing method of a storage virtualization subsystem architecture, it is characterized in that this storage virtualization subsystem architecture is to comprise a plurality of sas storage virtualization subsystems, each sas storage virtualization subsystem comprises at least one sas storage virtualization controller, and this method may further comprise the steps:

With first be linked in sequence those sas storage virtualization subsystems come one first data access path of configuration construction by this storage virtualization subsystem architecture and;

Come one second data access path of configuration construction by this storage virtualization subsystem architecture with second those sas storage virtualization subsystems that are linked in sequence, and this second order is to be different from this first order.

22. the configuration constructing method of storage virtualization subsystem architecture according to claim 21, it is characterized in that wherein this at least one sas storage virtualization controller is to have a device end I/O device that meets the attached small computer system interface agreement of tandem to link controller, and this device end I/O device binding controller is to comprise the attached small computer system interface of at least one tandem port.

23. the configuration constructing method of storage virtualization subsystem architecture according to claim 21, it is characterized in that wherein the type of this sas storage virtualization subsystem is to be the Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem,, a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem or only be a bundle disc player sas storage virtualization subsystem or wherein both or three's combination.

24. the configuration constructing method of storage virtualization subsystem architecture according to claim 23, it is characterized in that wherein when this sas storage virtualization subsystem be this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or this when only being a bundle disc player sas storage virtualization subsystem, this sas storage virtualization subsystem comprises that more an entity storage device array attaches on this at least one sas storage virtualization controller.

25. the configuration constructing method of storage virtualization subsystem architecture according to claim 21 is characterized in that wherein each sas storage virtualization controller of this at least one sas storage virtualization controller comprises that one first port is used for this first path and one second port is used for this second path.

26. the configuration constructing method of storage virtualization subsystem architecture according to claim 25 is characterized in that wherein this at least one sas storage virtualization controller only comprises a sas storage virtualization controller.

27. the configuration constructing method of storage virtualization subsystem architecture according to claim 21, each includes one first sas storage virtualization controller and one second sas storage virtualization controller to it is characterized in that wherein those sas storage virtualization subsystems, and both are established in this sas storage virtualization subsystem for redundant configuration, this first data access path is those the first sas storage virtualization controllers through those sas storage virtualization subsystems simultaneously, and this second data access path is those the second sas storage virtualization controllers through those sas storage virtualization subsystems.

28. configuration constructing method according to claim 21 or 27 described storage virtualization subsystem architectures, it is characterized in that wherein this first sas storage virtualization subsystem is to be a Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or a Redundant Array Of Independent Disks (RAID) front-end control sas storage virtualization subsystem, and other sas storage virtualization subsystem is for only being a bundle disc player sas storage virtualization subsystem, this first data access path is that those sas storage virtualization subsystems are linked in sequence with following simultaneously: at first be connected to one first sas storage virtualization subsystem, next is connected to one second sas storage virtualization subsystem, then connect backward in regular turn, till last sas storage virtualization subsystem; And this second data access path is that those sas storage virtualization subsystems are linked in sequence with following: at first be connected to this first sas storage virtualization subsystem, next is connected to this last sas storage virtualization subsystem, then connect forward in regular turn, till this second sas storage virtualization subsystem.

29. the configuration constructing method of storage virtualization subsystem architecture according to claim 27, it is characterized in that wherein this first sas storage virtualization controller comprises one first port and one second port, and this second sas storage virtualization controller comprises one the 3rd port and one the 4th port, and in each of those sas storage virtualization subsystems, this first path and this second path are through two ports in these four ports, this storage virtualization subsystem architecture more comprises one the 3rd data access path and one the 4th data access path simultaneously, is through two other port in these four ports.

30. a sas storage virtualization subsystem, storage virtualization subsystem architecture is characterized in that it includes:

A plurality of sas storage virtualization subsystems, each sas storage virtualization subsystem comprises the sas storage virtualization controller that two redundant configurations are provided with, each is to have a device end I/O device that meets the attached small computer system interface agreement of tandem to link controller for these two sas storage virtualization controllers, and this device end I/O device binding controller is to comprise the attached small computer system interface of at least one tandem port;

A plurality of data access path is construed as by this storage virtualization subsystem architecture by configuration;

Wherein, in the one first data access path in this a plurality of data access path, those sas storage virtualization subsystems are to be linked in sequence together with one first, in the one second data access path in this a plurality of data access path, those sas storage virtualization subsystems are to be linked in sequence together with one second.

31. storage virtualization subsystem architecture according to claim 30 is characterized in that wherein the type of this sas storage virtualization subsystem is to be Redundant Array Of Independent Disks (RAID)) sas storage virtualization subsystem, Redundant Array Of Independent Disks (RAID) front-end control head or only be a bundle disc player sas storage virtualization subsystem or wherein both or three's combination.

32. storage virtualization subsystem architecture according to claim 31, it is characterized in that wherein when this sas storage virtualization subsystem be this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or this when only being a bundle disc player sas storage virtualization subsystem, this sas storage virtualization subsystem comprises that more an entity storage device array attaches on these two sas storage virtualization controllers.

33. storage virtualization subsystem architecture according to claim 30 is characterized in that wherein this first order is to be same as this second order.

34. storage virtualization subsystem architecture according to claim 30 is characterized in that wherein each sas storage virtualization controller of those sas storage virtualization controllers comprises that one first port is used for this first path and one second port is used for this second path.

35. storage virtualization subsystem architecture according to claim 30, it is characterized in that wherein only being provided with one and being linked between this two first sas storage virtualization controller for two first sas storage virtualization controllers of two sas storage virtualization subsystems that link together.

36. storage virtualization subsystem architecture according to claim 30, it is characterized in that wherein those sas storage virtualization controllers are to comprise one first sas storage virtualization controller and one second sas storage virtualization controller, this first sas storage virtualization controller comprises one first port and one second port, and this second sas storage virtualization controller comprises one the 3rd port and one the 4th port, and in each of those sas storage virtualization subsystems, this first path and this second path are through two ports in these four ports, this storage virtualization subsystem architecture more comprises one the 3rd data access path and one the 4th data access path simultaneously, is through two other port in these four ports.

37. a computer system that realizes sas storage virtualization is characterized in that including:

This storage virtualization subsystem architecture comprises a plurality of sas storage virtualization subsystems, and one first data access path and one second data access path, each sas storage virtualization subsystem comprises the sas storage virtualization controller of two redundant configuration construction, each is to have a device end I/O device that meets the attached small computer system interface agreement of tandem to link controller for these two sas storage virtualization controllers, and this device end I/O device binding controller is to comprise the attached small computer system interface of at least one tandem port;

38. according to the described computer system of claim 37, it is characterized in that wherein the type of this sas storage virtualization subsystem is to be Redundant Array Of Independent Disks (RAID)) sas storage virtualization subsystem,, Redundant Array Of Independent Disks (RAID) front-end control head or only be a bundle disc player sas storage virtualization subsystem or wherein both or three's combination.

39. according to the described computer system of claim 37, it is characterized in that wherein when this sas storage virtualization subsystem be this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or this when only being a bundle disc player sas storage virtualization subsystem, this sas storage virtualization subsystem comprises that more an entity storage device array attaches on these two sas storage virtualization controllers.

40., it is characterized in that wherein this first order is to be same as this second order according to the described computer system of claim 37.

41., it is characterized in that wherein each sas storage virtualization controller of those sas storage virtualization controllers comprises that one first port is used for this first path and one second port is used for this second path according to the described computer system of claim 37.

42., it is characterized in that wherein only being provided with one and being linked between this two first sas storage virtualization controller for two first sas storage virtualization controllers of two sas storage virtualization subsystems that link together according to the described computer system of claim 37.

43. the configuration constructing method of a storage virtualization subsystem architecture, it is characterized in that this storage virtualization subsystem architecture is to comprise a plurality of sas storage virtualization subsystems, each sas storage virtualization subsystem comprises a plurality of sas storage virtualization controllers, each is to have a device end I/O device that meets the attached small computer system interface agreement of tandem to link controller for these two sas storage virtualization controllers, and it is to comprise the attached small computer system interface of at least one tandem port that this device end I/O device links controller, and this method may further comprise the steps:

Come one second data access path of configuration construction by this storage virtualization subsystem architecture with second those sas storage virtualization subsystems that are linked in sequence.

44., it is characterized in that the type of this sas storage virtualization subsystem wherein is for Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem, Redundant Array Of Independent Disks (RAID) front-end control head or only is a bundle disc player sas storage virtualization subsystem or wherein both or three's combination according to the configuration constructing method of the described storage virtualization subsystem architecture of claim 43.

45. configuration constructing method according to the described storage virtualization subsystem architecture of claim 43, it is characterized in that wherein when this sas storage virtualization subsystem be this Redundant Array Of Independent Disks (RAID) sas storage virtualization subsystem or this when only being a bundle disc player sas storage virtualization subsystem, this sas storage virtualization subsystem comprises that more an entity storage device array attaches on these two sas storage virtualization controllers.

46., it is characterized in that wherein this first order is to be same as this second order according to the configuration constructing method of the described storage virtualization subsystem architecture of claim 43.

47. configuration constructing method according to the described storage virtualization subsystem architecture of claim 43, it is characterized in that wherein only being provided with one and being linked between this two first sas storage virtualization controller for two first sas storage virtualization controllers of two sas storage virtualization subsystems that link together.