CN1266514A

CN1266514A - Object oriented data storage device

Info

Publication number: CN1266514A
Application number: CN98808046A
Authority: CN
Inventors: D·B·安德森
Original assignee: SICHATER TEHC CO Ltd
Current assignee: SICHATER TEHC CO Ltd; Seagate Technology LLC
Priority date: 1997-08-11
Filing date: 1998-08-10
Publication date: 2000-09-13
Also published as: KR100602393B1; WO1999008173A2; GB0001558D0; JP2003517645A; DE19882605T1; GB2345167A; WO1999008173B1; KR20010022801A; GB2345167B; WO1999008173A3

Abstract

A data storage device (110, 112) includes storage media (132) having stored thereon data configured as a plurality of objects (124, 126), each object having attributes indicative of characteristics of the object. A control component (150) is operably coupled to the storage media (132) and is configured to provide an interface (128) to the objects (124, 126). The interface exposes methods ( phi -N) which are invoked to access the objects (124, 126).

Description

OO data storage device

Invention field

The present invention relates to data storage device.More particularly, the present invention relates to wherein data are organized as object and the data storage device of access such as disc driver, tape drive or CD drive.

Background of invention

It is well-known that the computer patterns type of two class routines is arranged in computer industry.First kind is main frame (mainframe) computation schema, and second kind is cluster (clustered) computation schema.

In the main frame computation schema, final user's common process is to buy a starter system earlier, and when needs append processing power, replace a bigger system again.On the difference of this one-period, can produce abrasive discontinuous.For example, if the user grows to the architecture of dissatisfied starter system, then the user may need to be converted to another kind of operating system from a kind of operating system, even when buying the host computer system of the second cover upgrading, be transformed into the proprietary architecture of another supplier from a proprietary architecture of supplier.For implementing upgrading, this change all needs great cost in expense and aspect consuming employee's time two.So under many circumstances, avoid this conversion.

In addition, the surplus value of the computer equipment born of main frame model is relatively poor.Like this, when system conversion that initial system is upgraded, before often making, system conversion completely lost on the foundation of investment.In addition, bigger upgrade-system wants smaller system low on sales volume.Therefore, each new upgrade-system on assessing the cost usually than before system higher.

In the cluster computation schema, with a group less, standard server replaces main frame.This can provide than host mode and more many advantage.Start because cluster can be used as individual system, thereby it is lower to enter the threshold value of cluster model.And then, this than mini system mass selling usually, make computer costs lower.And the standard of this system does not rely on proprietary architecture.This provides the possibility in multiple source for existing equipment, chooses best product when the back is bought thereby allow the user to continue.

The cluster computation schema also has other advantage.Satisfy at present and the amount of additional resources of recent demand by only increasing, can control upgrade cost more accurately.In addition, the user can be from selecting the supplier widely, and needn't worry to shift or be transformed into a new architecture.Similarly, a correct architecture is arranged, can no longer need to be transformed into another operating system.

Have, the cluster computation schema also has its shortcoming and problem again.For example, the cluster computation schema is difficult to be provided at bear with individual host and finishes the group system that has the shared data ability under the equal workload prerequisite.For example, common extremely difficult realization needs each server in the cluster all to handle the cluster mode of identical data affairs.Some examples of this application comprise the complete schedule of dealing of airline reservation system or financial institution.

Second shortcoming of cluster computation schema only relates in managed storage with in hosted environment and lacks broad experience on the existing data.This experience has been extended to also not providing in the management software of use in the cluster environment of standard.

The present invention is devoted to address these and other problems, and provides other advantages on the prior art basis.

Brief summary of the invention

Data-storage system comprises medium, stores the data that are configured to a plurality of objects on it, and each object has the attribute of this characteristics of objects of expression.Control assembly operationally is coupled to medium and is configured as provides an interface to object.The method that this showing interface access object is called.

The accompanying drawing summary

Fig. 1 is the block scheme according to the storage system of the network building-out of one aspect of the invention.

Fig. 2 is the key diagram according to the object model of one aspect of the invention.

Fig. 3-1 is the block scheme of first kind of configuration, an object in one of them requestor's accessing storage devices.

Fig. 3-2 is block schemes of second kind of configuration, an object in one of them requestor's store storage device.

Fig. 4 is the skeleton view according to the disc driver of one aspect of the invention.

Fig. 5 is the functional-block diagram of explanation requester accesses object.

Fig. 6 is the key diagram according to the part medium subregion of one aspect of the invention.

Fig. 7-1 and 7-2 illustrate the process flow diagram of requestor's access object according to an aspect of the present invention.

Fig. 8 is object is created in explanation according to one aspect of the invention a process flow diagram.

To be explanation open process flow diagram with upgating object according to one aspect of the invention to Fig. 9.

Figure 10 is explanation writes object according to one aspect of the invention a process flow diagram.

Figure 11 illustrates that opening object according to one aspect of the invention only is used for read-only process flow diagram.

Figure 12 is object is read in explanation according to one aspect of the invention a process flow diagram.

Figure 13 is object is closed in explanation according to one aspect of the invention a process flow diagram.

Figure 14 is object is eliminated in explanation according to one aspect of the invention a process flow diagram.

Figure 15 is the process flow diagram that explanation is created the division according to one aspect of the invention.

Figure 16 is subregion is eliminated in explanation according to one aspect of the invention a process flow diagram.

Figure 17 is the process flow diagram of explanation according to one aspect of the invention derived object.

Figure 18 is explanation obtains object properties according to one aspect of the invention a process flow diagram.

Figure 19 is the process flow diagram of explanation according to one aspect of the invention setting or modification object properties.

Figure 20 is the locking attribute is read in explanation according to one aspect of the invention a process flow diagram.

Figure 21 is explanation is provided with the locking attribute according to one aspect of the invention a process flow diagram.

Figure 22 is the locking attribute is reset in explanation according to one aspect of the invention a process flow diagram.

Figure 23 is the process flow diagram of explanation according to the association of one aspect of the invention deriving means.

Figure 24 is the process flow diagram of explanation according to the association of one aspect of the invention setting device.

The detailed description of preferred embodiment

Fig. 1 is the block scheme according to the data-storage system 100 of one aspect of the invention.System 100 comprises OO

data storage device

110 and 112, file server 14, and the requestor 116,118 and 120, and interconnection 122.The network of a kind of extra storage configuration of system 100 expression, it can be made of equipment and the software from many different suppliers, concerning the user as same single computation machine system.

OO memory storage 110-112 is the memory unit of the data storage function of executive system 100.Memory storage 110-112 preferably includes disc driver, independent redundancy array (RAID) subsystem, tape drive, tape library, CD drive, CD player (juke boxes) or any other sharable memory

storage.Memory storage

110 and 112 also provides I/O (I/O) channel-attached so that access means 110 and 112 to requestor 116,118 and 120.

Requestor 116,118 and 120 is parts of similar service device or client computer and so on, and they can share the information that is stored in 110 and 112 devices.Requestor 116-120 preferably also is configured to the information in direct

access storage device

110 and 112.

File server 114 is carried out management and security function, such as requests verification and resource location etc.In than mini system, preferably do not use dedicated file server.But one of requestor 116-120 bears the responsibility of monitor system 100 operations that file server 114 should carry out.In addition, when safety that does not need or do not wish to provide and function, when perhaps more needing requestor 116-120 group and

memory storage

110 and 112 directly to talk, can from system 100, remove file server 114 by file server 114.

In a preferred embodiment, interconnection 122 is physical basis structures, by it, all parts that attach in the network that storage system 100 is arranged can be communicated by letter each other.

In the operation, when system 100 started, all devices were preferably mutually or with respect to a common reference point (for example file server 114 or interconnect 122) indicating self.For example, in system 100 based on optical-fibre channel,

OO memory storage

110 and 112 and requestor 116-120 be registered on the institutional framework (fabric) of system.After implementing like this, but all other parts are discerned in any parts utilization structure service of the system 110 of the definite operative configuration of hope.From file server 114, requestor 116-120 learns memory storage 110 that requestor 116-120 can access and 112 existence, equally,

memory storage

110 and 112 learn the positional information of determining other device in the system 100 and be used to call must use such as the management service institute of backup the address.Similarly, in a preferred embodiment, file server 114 is learnt the existence of

memory storage

110 and 112 from the structure service.

According to the security practices of particular system 100, requestor 116-120 or wherein any may be rejected some parts of access system 100.From one group of

memory storage

110 and 112 that each requestor is suitable for, then requestor's identified documentation, database and its available free space.

Simultaneously, each parts in the system 100 preferably can be discerned the arbitrary specific consideration related with file server 114.For example, in case arbitrary memory storage with level service (level service) attribute circular document server 114, then all other parts in the system 100 can be learnt these attributes from file server 114.For example, particular requester 116-120 may wish to notify the importing of its additional memory devices, then and start it.For example, can provide this attribute as requestor during to file server 114 login.Like this, when having new memory storage to add system 100, file server 114 is informed this specific requester 116-120 automatically.Usually, file server 114 also can transmit other key property to the requestor, for example whether RAID 5, mirror image etc. of memory storage.

According to an aspect of the present invention, the information that is stored in

memory storage

110 and 112 is stored with the system that clearly demonstrates among Fig. 2.The preferably OO device of in the

memory storage

110 and 112 each, in its operator scheme, data are as object 124-126, rather than organize with access as the sector of certain sequence.OO device 110 and object-based file system of 112 usefulness come management object 124-126, and this system comprises that to each subregion on the specific device individual layer inventory of an object is arranged.This also can see flat file system as.Be stored in object 124-126 on each device medium of 110 and 112 preferably with the minimum visual element of the capacity allocation on the

device

110 or 112 of object-oriented device pattern operation.An object on this memory storage comprises the one group orderly sector related with unique identifier.Data identifier reference has a side-play amount in object.

Press memory storage

110 or 112, object is distributed and place medium.File and metadata that operating system management is made up of object, and unlike existing architecture the management sector data.

By interface 128 access object 124-126, wherein object is showed the method that a plurality of person of being requested 116-120 call, with attribute and the data among access and the operand 124-126.Like this, as shown in Figure 2, request 130 is issued from requestor 116-120.In preferred embodiment, requestor 116-120 is a computer system, or a member in certain group network system, submits to request 130 to act on and comprises object 124-126 on memory storage.Requestor 116-120 is client both, can be again server.Under any circumstance, a method in the interface 128 is called in the request 130 of being sent by one of requestor 116-120, thereby handles one or more object 124-126, as hereinafter describing in detail among the application.

Fig. 3-1 is the block scheme that can be used for two kinds of different configurations of the object of depositing among the accessing storage devices 110-112 with 3-2.For the sake of simplicity, single requestor 116 and single OO memory storage 110 only are described in Fig. 3-1 and 3-2.When requestor 116 wishes to open an object (for example object 124-126), but requestor's 116 direct access storage devices 110, and perhaps it may need asking for permission of file server 114 and position for an object on the accessing storage devices 110.114 controls of message file server mainly are the safety requirements functions of system's 100 specific execution to the expansion of the access of memory storage 110.

In the block scheme shown in Fig. 3-1, suppose that system 100 is safe.Do not require that promptly protection carries out the transmission of command information and data between requestor 116 and memory storage 110.In this embodiment, still have a file server 114 that management function is provided, but do not need it to supervise the reciprocation of requestor and memory storage 110.

In this embodiment, requestor 116 is in directly to memory storage 110 accesses and establishment object.Like this, requestor 116 can open, reading and writing and close object, just is attached to requestor 116 originally as their.This operation hereinafter will be described in detail.But for clarity sake, do a general introduction here earlier.In order to read the object in the memory storage 110, requestor 116 preferably at first reads from one or more objects, and described object discloses the logical volume or the subregion of memory storage 110 and how to begin to retrieve objects stored on it.Requestor 116 opens and reads an object then, and it may be a root directory.From this object, and go ahead based on the content of root directory and to seek other object.Requestor 116 repeats said process until finding desired data.Data are by object identifier (object ID) reference, and a skew is arranged in object.

In second embodiment shown in Fig. 3-2, require security.So file server 114 is inserted in the I/O chain between requestor 116 and the memory storage 110, until the necessary degree of expectation protected level.In a preferred embodiment, requestor 116 must at first carry out a series of I/O operations and obtain asking for permission of file server 114.File server 114 (it may be for add-on security to requestor's 116 concealment stored position informations) is then by returning enough information to allow requestor 116 directly to communicate by letter with memory storage 110 to approve the request from requestor 116.Because when memory storage 110 is logined on file server 114, it preferably is apprised of security parameter, thereby memory storage 110 preferably do not allow I/O request, unless it is suitably constituted and comprises the coded data that contains from effective permission of file server 114.

Then, processing procedure is to carry out with Fig. 3-1 similar manner of being narrated.But, with the service load of each order association may be very inequality.For example, requiring (shown in Fig. 3-2) under the complete situation, the order and the data that transmit between requestor 116 and memory storage 110 all may be encrypted.In addition, preferably License Info is appended into the command parameter that requestor 116 provides to memory storage 110.

Because in a preferred embodiment,

memory storage

110 and 112 can comprise hard disk drive, thereby hard disk drive simply is discussed is necessary.Fig. 4 is the skeleton view that can be used as the hard disk drive of memory storage 110.In disc driver 110, the axle sleeve that a plurality of discs 132 center on the motor component 134 in the casing 136 is folded; Each disc 132 has many concentrically ringed recording tracks, shown in 138.Each magnetic track 138 is divided into a plurality of subregions (carefully stating with reference to Fig. 6) again.By with reference to the particular zones in certain magnetic track 138, data can be stored on the disk 132 or therefrom retrieve.Transmission arm device 140 is rotatably installed on the angle of casing 136, transmission arm device 140 has a plurality of head gimbal members 142, each member has and has the slide block that read/write head is sensor (not shown), is used for writing disk 132 from disk 132 sense informations or information.

Voice coil motor 144 accurately before and after rotation transmission arm member 140, move along the arc of arrow 146 indications on the surface that makes the sensor disk 132 on the slide block 142.Fig. 4 also represents disk drive controller 148 with the block scheme form, is used for controlling in known manner some operation of disc driver 110.But according to the present invention, Disk Drive Controller 148 also is used to be carried out up to the interface 128 of objects stored 124-126 on the disk 132.

Fig. 5 is the block scheme of the disc driver 110 time part disc driver that is applied to system shown in Figure 1 100.In Fig. 5, Disk Drive Controller 148 comprises the control assembly 150 of implementing interface 128.Object 124-126 is stored on the medium that constitutes disk 132.Request parts 152 person of being requested 116-120 carry out and call method make-up formula request in the interface 128, in case call a certain method, control assembly 150 is just carried out certain task, are demarcated object with the setting means operation.Control assembly 150 returns an incident, and it can comprise data related with any identifying object or attribute.This incident also can be returned according to the specific call method of requestor 116-120.

In order to make OO device 110-112 that operating system identical function with the block oriented device logotype can be provided, the storage space among the device 110-112 must be managed to similarity degree.Like this, in a preferred embodiment, on the object 124-126 of memory storage 110-112 organized layer is set, described object storage is on memory storage.In a preferred embodiment, OO device 110-112 is distributed into one or more exclusive area to disk space, is called subregion.Describe subregion in detail with reference to Fig. 6.In a subregion, requestor 116-120 can create object.In a preferred embodiment, the structure in the subregion is the tissue on simple a, plane.At this tissue, any operating system all can be shone upon the structure of himself.

Fig. 6 shows the part storage space on the medium (for example disk 132).This storage space comprises many objects, such as installing controlling object 154, device affiliated partner 156 and being designated as subregion 0 (also representing with 158), subregion 1 (also representing with 160), a plurality of subregions of subregion N (also representing with 162).Each subregion also comprises a plurality of objects, for example subregion controlling object 164, zone object table 166 and a plurality of data object 168 (N represents with data object 0-data object).

With each object association be one group of attribute.According to an aspect of the present invention, provide access control attribute.Be provided with Set Attribute method, (hereinafter will describe in detail) also provides a kind of means, but by means of the controlled feature object of its access.By changing the version number of access control attribute, can refuse or give some requestor 116-120, this special object of access.

Dividing cluster object (clustering object) is a kind of attribute, and whether it is illustrated in the storage system special object and should wishes to be positioned near another object.Whether regeneration attribute (cloning attribute) expression special object is created by duplicating in the storage system another object.The size characteristic of one group of size attribute (size attribute) definition special object.For example, this group size attribute comprises: expression can write the peak excursion information of object, distributes to the piece number of object, every byte number in the piece number of storage data and the object in the object.

One group of time attribute is represented: when object is created, the time that data are modified for the last time in the object, the time that attribute is modified for the last time in the object.Object preferably also comprises one group of attribute, and it determines the time that any data are modified for the last time in the file system time and any attribute are modified for the last time.In order to represent the characteristics of other parameter, feature or any given object, also can provide other attribute.

Each object also is associated with an object identifier, and it is selected by specific memory device 110-112.And as the response of creating object command is returned to requestor 116-120.This identifier is preferably not signed, fixed length integer.In a preferred embodiment, the length of identifier defaults to the size by particular memory device 110-112 regulation, can be arranged to a device attribute.And then, in a preferred embodiment, for knowing the predetermined subset of identifiers (IDs) of other specific function reservation that object, application-specific and hope are carried out.

Fig. 6 explanation, medium typically comprises many objects of knowing, they always have specific object ID.In some cases, these objects of knowing are present in each device or each subregion.

For example, know liking device controlling object 154 for one, it preferably comprises the attribute of being safeguarded by multiple arrangement 110-112, and all relevant with all objects in device itself or the device.Attribute by (Set_Attribute) method is safeguarded will describe in detail in the application of back.In a preferred embodiment, each device 110-112 deposits a device controlling object 154.

Table 1 explanation one group of preferred means controlling object (DCO) attribute

Type	Title	Byte	Semantic
Type	Title	Byte	Semantic	Security	Clock	????8	Monotone counter
	Master key	????8	The control device key	Security	Clock	????8	Monotone counter
	Master key	????8	The control device key		Device keys	????8	Control subregion key
	Protected level	????1	Definition protection option		Device keys	????8	Control subregion key
	Protected level	????1	Definition protection option	Subregion	The subregion counting	????1	The device number of partitions
The device attribute	Object properties	????8	Definition and the relevant characteristic of all objects of device	Subregion	The subregion counting	????1	The device number of partitions

In a preferred embodiment, the DCO attribute comprises clock (being a monotone counter simply), master key comprise encryption key or device go up all other keys of control other master key and control subregion key and can be used for locking the device keys of subregion.Attribute also comprises can discern predetermined protected level and the protected level key related with safety policy, determines the number of partitions of the number of partitions on the device and determines by the object properties of all object association characteristics on the access specific device.

Manage cross-over connection in the object of a plurality of memory storage 110-112 for competent, each memory storage 110-112 preferably includes device affiliated partner 156, correlativity between the 110-112 is for example respectively installed in its definition, where

memory storage

110 and 112 is a pair of mirror image device or the member of an array group, and affiliated partner 156 can this relation of identification.The preferable attribute of table 2 explanation affiliated partner 156.

Table 2

Title

Byte

Semantic

Identifier in parallel	????2	Unique ID of this group
Identifier in parallel	????2	Unique ID of this group	Association type	????2	Related kind
Membership table	????n		Association type	????2	Related kind
Membership table	????n		Associated identifiers	????2
Association type	????2		Associated identifiers	????2
Association type	????2		Membership table	????n

Preferably comprise an associated identifiers in these attributes, it is the unique identifier of each given associated apparatus group.Also best in the attribute is to comprise the association type of determining related kind (for example mirror image to, RAID5 etc.) between the device.Preferably again in the attribute be, comprise a membership table, it indicates that simply the member of above-mentioned definite association is 110-122.

Memory storage 110-112 goes up each subregion 158,160 and 162 and preferably includes the subregion controlling object 164 that contains single graded properties.Object 164 is preferably not only described subregion, also describes the relevant object properties of all objects in any and this subregion.Each each subregion to definition on it among the device 110-112 preferably comprises a subregion controlling object 164.Fig. 6 explanation is stored in the subregion controlling object in each subregion, but might not be this situation.The subregion controlling object can be stored in the flat file system, rather than is stored in the above-mentioned subregion.

The many attributes that often are included in the subregion controlling object 168 of table 3 expression.

Table 3

Type	Title	Byte	Semantic
Type	Title	Byte	Semantic	Master key	???8	Encryption key
	The work at present key	???8		Master key	???8	Encryption key
	The work at present key	???8		Working key in the past	???8
Zone attribute	Object properties	???8	The characteristic of all object associations in definition and the subregion	Working key in the past	???8

Preferably comprised a master key that can define whole subregion encryption key and can be used for being provided with the work at present key in this generic attribute.Preferably also comprise the work at present key and the former working key that are used for encryption and decryption order and data message in the attribute.Subregion controlling object 164 also comprise fortunately with specified partition in the object properties of all object associations.

Fig. 6 illustrates that also each subregion preferably comprises zone object table 166, and it is when creating the division on memory bank, the object of being set up by control assembly 150.Zone object table 166 preferably has identical identifier to each subregion, specifies in the starting point of navigation object file system on the medium.The attribute list that table 4 explanation is related with each zone object table.

Table 4

Field	Byte
Field	Byte		Object ID	??8	Open, reading and writing, close the employed ID of this object
User data	??N	Be provided with the POL attribute, use GET ATTRIBUTE to obtain data value	Object ID	??8

Represented as table 4, this object preferably comprises the object identifier table (that is object ID) of all objects in the subregion and distributes to the user's space amount of each object.The requestor uses that object identifier is opened, reading and writing and close this object.In addition, the user is preferably each object ID distributing user space and is convenient to set user data attribute in the zone object table.Behind zone object table 166, each subregion preferably comprises a plurality of data objects 168.Each data object 168 preferably comprises the adeditive attribute that comprises of one or more set of properties that table 1 shows out, and it is fixed to be come by the concrete enforcement of data-storage system.

OO memory storage 110-112 preferably can support requestor 116-120 that the request of data or storage data is provided.And memory storage 110-112 preferably bears it and completed function of its parts is likely finishes in operating system or existing architecture.Space management reaches safeguarding that with the attribute that installs object association among the 110-112 best middle device 110-112 self finishes.These functions preferably realize that by calling the method for supporting at interface 128 this interface 128 is to realize by the control part 150 among each memory storage 110-112.Hereinafter go through a plurality of methods that to call.But, for the ease of understanding these methods better, provide process flow diagram with 7-1 and 7-2, the OO file system of navigating is described according to an aspect of the present invention.Believe go through each method hereinafter before, Fig. 7-1 and 7-2 are discussed earlier will be convenient to understand the present invention.

Extend to 204 from frame 170, Fig. 7-1 and 7-2 and the following describes in the specified partition of a how storage in 110-112 and search an object.At first, requestor 116 obtains the device attribute of device controlling object 154.This is by frame 172 expressions.Calling the Get_DCO_Attributes method makes control assembly 150 return the attribute that is stored in the device controlling object 154.This is by frame 174 expressions.According to the attribute that returns from device controlling object 154, requestor 116 selects certain given subregion then.This is by frame 176 expressions.

Requestor's 116 in a single day selected subregions, requestor 116 calls the Get_DCO_Attributes method immediately, shown in frame 173.It makes control assembly 150 from being stored in device affiliated partner 156 getattrs on the medium 110.Then, control assembly 150 returns relating attribute to requestor 116, shown in frame 175.According to device relating attribute and controlled attribute, the requestor's 116 selected subregions that will inquire.Shown in frame 176.

Then, requestor 116 calls the Get_PCO_Attributes method, and it makes control assembly 158 obtain attributes, finds the attribute in the related subregion controlling object 164 of the specified partition that will inquire with requestor 116.Control assembly 150 obtains and returns subregion controlling object attribute.Shown in frame 178 and 180.If the object in the selected subregion is not the interested object of requestor, shown in frame 182 and 176, the requestor can select other subregion.

Yet, supposing that requestor 116 has found interested subregion, the requestor calls Get_POL_Attributes to selected subregion, shown in frame 184.This method makes control assembly 150 obtain attribute from the zone object table 166 that selected subregion is associated.Then these attributes are offered requestor 116, shown in frame 186.

Then, requestor 116 calls the Open_Read_Only_POL method.Shown in frame 188.As hereinafter going through, control assembly 150 obtains to be stored in the data in the zone object table 166 related with selected subregion, but because the data that provide are read-only, can not be modified or expand, so control assembly can not be revised the attribute of this object.Shown in frame 190.

The requestor calls the Read_POL method then, and it makes control assembly 150 obtain the Object table of selected subregion, offers requestor 116 and looks back.Shown in frame 194.In selected subregion, select want object after, requestor 116 calls the Close_POL method, it makes control assembly 150 close the zone object table.Shown in frame 196.

Find behind the ID of the object of wanting or all objects, requestor 116 then calls the Open_xxx_Objectx method.Wherein xxx shows the special deployment method that the requestor calls according to desired particular data operation.Show requestor's selected will operation or the ID of access object from the zone object table with Objectx.Symbol xxx for example can represent (Open_Update) operation or or Open_Read_only operation.These also to discuss hereinafter and these steps shown in frame 198.

Then, the requestor carries out the operation of wishing to the object that control assembly 150 returns.Hereinafter will go through the whole bag of tricks that can be used for operand.Shown in frame 200.

At last, the requestor is in case the object of wanting is finished desired operation or access, and requestor 116 calls hereinafter the Close_Objectx method with detailed description immediately, and this operation work is with the object of turn-off request person's 116 accesses.

Fig. 8-the 24th is illustrated as being stored in the object in the OO memory storage, realizes desired function and desired operation, the process flow diagram of the various demonstration methodses that the requestor can call.

Fig. 8 is the process flow diagram that specifies the Open_Create_Objectx method.When requestor 116 calls this method, shown in frame 208, control assembly 150 is created in a new object ID and the zone object table that its input is related with being created object place subregion.Shown in frame 210.Control assembly 150 is by distributing the piece be associated with object etc. then, revises object properties showing the Object Creation time and listed in the table 1, and other attribute of object association is set, thereby creates new object.Shown in frame 212.Then, control assembly 150 returns solicited status, together with the ID of the new object of just having created.Shown in frame 214.

Except that object of simple establishment, requestor 116 can specify many options.For example; in a preferred embodiment; requestor 116 can specify: whether object is subjected to password protection; whether object is encrypted; certain quality service threshold value (for example; whether object backs up); lockout feature (for example; whether object uses an object lock or other lock; lock as subregion lock or device); the access control version; (it can make all renewals be become another object by mirror image or back up with another specific mode) supported in mirror image or other backup, will be that unit comes allocation space and conflict characteristic (for example writing unix system) is set to specify minimal size to show.

In order to call this method, the customizing messages that requestor 116 provides to control assembly 150 comprises the License Info that security of system is required, create device subregion and above-mentioned any option of object.In response, in an example embodiment, control assembly 150 returns: the ID of available capacity, solicited status and new object on the device.

It shall yet further be noted that the specific examples that can call this method comprises all data with object association.In this case, can call a method creates object, writes object and closes object.

Fig. 9 is the process flow diagram of explanation Open_Update_Objectx method.Shown in frame 220, when requestor 116 calls the method, allow requestor's 116 read and write special objects.Also can expand the length of this object.When calling the method, an attribute is set to show this object just in use in 150 pairs of appointed objects of control assembly.Requestor 116 provides License Info, contains the partition id of object, wants the identifier of access object, the above-mentioned any option of the action type that will carry out (as upgrading or write etc.).In response, control assembly 150 returns the length and the also available residual capacity of requestor 116 of solicited status and appointed object.

Figure 10 is the process flow diagram of explanation Write_Objectx method.When requestor 116 calls the method shown in frame 242, write certain piece number on the certain position of control assembly 150 in appointed object.

Write method also can cause other method of calling.For example, if supported parity checking by access device 110-112, then write operation can call the XOR method automatically, and it is to being carried out xor operation by write data, then, with and odd and even data be written in one or more predetermined parity checking units.

In order to call the method, requestor 116 provides piece number, optional information, the data that can write in the starting block position write in License Info, object identifier, partition id, the object, the object to be write.In case the method for calling, the object of the concrete data modification appointment that control assembly 150 usefulness provide.Shown in frame 244.Then, control assembly 150 is revised the necessary attribute of appointed objects, as object length, with the time marker of this object association etc.Shown in frame 246.Control assembly 150 is revised the necessary attribute of other object then, such as the place that relates in the zone object table.Shown in frame 248.Then, control assembly 150 returns solicited status to respective request person.Shown in frame 250.

Figure 11 is the process flow diagram of explanation Open_Read_Only_Objectx method.When calling the method, control assembly 150 allows requestor 116 only for reading purpose access appointed object.Like this, when calling this object, shown in frame 230, the requestor provides License Info, a partition id, an object ID and optional information.150 pairs of appointed objects of control assembly are provided with an attribute and show that object just in use then.Shown in frame 232.Then control assembly 150 is provided with read only attribute at this object, shows that the requestor can not write this object.Shown in frame 234.At last, control assembly 150 returns the length of solicited status and appointed object.Shown in frame 236.

Figure 12 is the process flow diagram of explanation Read_Objectx method.When requestor 116 wished device 110 from the special object return data, requestor 116 called the method.The requestor provides permission, information object ID, partition id, will read the reference position of piece, the piece number that will read and other desired optional information in response, data length that control assembly 150 returns solicited status, will return and the real data of returning in response to the method.Shown in frame 256 and 258.

Figure 13 is an explanation Close_Objectx method flow diagram.When requestor 116 called this method shown in frame 264, the requestor provided License Info, object ID and any desired optional information.In response, control assembly 150 is revised the data in the appointed object shown in frame 266.In addition, cause that as the result who writes object object understands some change, if, in the past medium was not write as, then at this moment also can write.Control assembly 150 shown in frame 268, the attribute of upgating object X.For example if to liking the new object of creating, then its attribute is upgraded with the attribute information of creation-time and other requirement.In addition, the attribute that is modified shows that data are by the time of Last modification in the object, if data length is changed, control assembly 150 is provided with an attribute, shows that the requestor does not re-use this object.

Control assembly 150 is renewal and object association and be reflected in resident in cache information in the object properties randomly.Shown in frame 270.For example, if particular requester 116 is configured to request will notify memory storage 110, the data of closing object are still wanted high-speed cache or high-speed cache no longer, close continuously and open once more and use so that the operating system of memory storage 110 is the object fast speed, keep cache information.But simultaneously, memory storage 110 can be which parts reserved track because of notifying in another requestor access same target in averaging time the causes relevant collision event in the system 100.At last, control assembly 150 returns solicited status, shown in frame 272.

Figure 14 is the process flow diagram of explanation Remove_Objectx method.When calling this method, control assembly 150 takes the necessary steps and deletes this object from medium shown in frame 278.Shown in frame 280.Control assembly 150 is revised the zone object table of just deleted object place subregion association then, and reflection appointed object ID can have been used again.Shown in frame 282.Last control assembly 150 returns solicited status, shown in frame 284.In order to call the method, requestor 116 will provide License Info, partition id, object ID and any desired optional information.Last control assembly 150 returns solicited status, shown in frame 284.

Figure 15 is the process flow diagram of explanation Create_Partitionx method, and this method can be called by the requestor, shown in frame 290.In order on memory storage 110, to create a subregion.It should be noted that when the Greate_Partitionx method is divided into one or more zone to driver the institute that needn't take into account on the medium has living space.In addition subregion also can cross-domain disk on zones of different.

In one embodiment, create the subregion that ceramic tile is arranged with this method, on behalf of the true division of storage space, it on the device to create the division.Divide the space with this arrangement by seeervice level, as the data array.This subregion can not change size but can delete and rebuild.

According to a further aspect in the invention, subregion as logical partition, is convenient to organization object in logic, rather than is managed the space by seeervice level.In this second embodiment, subregion dynamically changes size.

In order to call this method, the requestor provides License Info, any desired option, partition id and distributes for identification is assigned to the initial space of formulating in the concrete space of demarcating part.In response, control assembly 150 is given specified partition with the allocation of space on the medium, shown in frame 292.Then, control assembly 150 is set up subregion controlling object and zone object table shown in frame 294 and 296.As mentioned above, can not delete the zone object table.It can be used as the starting point of object in the navigation subregion.At last, control assembly 150 returns solicited status and the block plan of having divided is described.Shown in frame 298.

Figure 16 is the process flow diagram of explanation Remove_Partitionx method.In order to call this method, requestor 116 provides the partition id of License Info, optional information and the deleted subregion of sign.Shown in frame 304.In response, control assembly 150 goes the previous space related with subregion to distribute, shown in frame 306.Then, control assembly 150 is left out all objects in the zone object table related with deleted subregion, and deletion zone object table is also deleted the subregion controlling object.Shown in frame 308,310 and 312.At last, control assembly 150 returns solicited status and shows and divides the block plan that changes.Shown in frame 314.

According to an aspect of the present invention, the data management policy will be notified each memory storage 110-112, so that memory storage is carried out this management policy when moving independently of each other.This significant advantage that provides is, not only less people's intervention and can carry out more predictable and management control timely.

For example, the last data of memory storage 110-112 can back up weekly desirably.Typically in the backup of idle period of time at weekend, the system availability of making is unlikely to interrupt between all service period conventional system.But when power system capacity constantly increased, the window of availability dwindled gradually.Like this, for backing up the data that may reach terabyte, be difficult to find out the system break time of length like this.

Therefore, according to an aspect of the present invention, based on being endowed the decision attribute to this object action, OO memory storage 110-112 can arrive the notice backup functionality whenever of its correct status that will back up at object.And the backup of all files can be distributed between longer-term, and remaining paper is still upgrading during this period, and does not influence data integrity.

Other example of the attribute that OO memory storage 110-112 can call comprises encryption, compression, version and odd even redundancy.In each example, only need notify memory storage 110-112 the policy relevant with appointed object or group of objects.Then device itself can be carried out the agency that this function or notice provide this service.

For example, memory storage 110-112 itself can finish compression and encrypt.Thereby what only need notifying device is that an object is required compression or encrypts this fact.For management function by agency's execution, not only must notify memory storage the management function policy, and will inform and can what discern the agency who carries out this function, to making memory storage when acting on behalf of this function of execution, accessed.

According to an aspect of the present invention, set up association between object, being convenient to discern all has same alike result or relevant object is arranged.For example, suppose that a database comprises 6 files or object, one can not be backed up, unless all files or object are all closed or close with other object that has no relations up to one.Come this class mutual relationship between management object with file server 114 possibly.In addition, when the present invention was provided with in the array odd even, it was relevant also to set up interior arrangement.By setting up such group, wherein, device or object understand, then all the other devices or object also have the characteristic of identical essence among the group, so the group management can be more effective.

Figure 17-the 24th illustrates by calling the process flow diagram of the management function that object is showed on the memory storage method realizes.Calling these methods takes steps to finish the management function related with call method control assembly 150 and/or relevant control assembly.

Figure 17 is the process flow diagram of explanation Export_Objectx method.Shown in frame 320, requestor 116 is by providing License Info, optional information, object ID, destination apparatus ID and target partition ID, and calls this method.This deriving method makes memory storage 110-112 according to the rule action that is expressed as the attribute of given object association.For example, it can be used for starting backup or support is decided version to the object of other device.

When calling Export_Objectx, control assembly 150 obtains appointed object shown in frame 322 from medium, and then, control assembly 150 calls the Open_Greate method to the destination apparatus of requestor's 116 appointments then.Shown in frame 324.Then, 150 pairs of control assemblies provide the data of appointed object and the destination apparatus of attribute to call write method.Shown in frame 326.At last, 150 pairs of destination apparatus of control assembly call the Close method, so as finish destination apparatus write after, close the object on the destination apparatus.Shown in frame 328.At last, control assembly 150 returns the new object ID of solicited status together with the object that is written into destination apparatus to the requestor.Shown in frame 330.

Also support to allow the requestor to look back the method that obtains object properties and object properties are set earlier by the interface 128 that control assembly 150 is implemented.Figure 18 and 19 is process flow diagrams that corresponding Get_Objectx_Attributes and Get_Objectx_Attributes method are described respectively.

In case call method shown in Figure 180, shown in frame 336, make control assembly 150 obtain the attribute of appointed object.In an illustrative embodiment, the requestor provides License Info, object ID or object ID table and optional information.Then, control assembly 150 obtains the attribute related with this object ID or object ID table and returns these attributes to the requestor together with solicited status.Shown in frame 338.

Figure 19 illustrates the Get_Objectx_Attributes method.Shown in frame 344, can provide permission, information object ID and optional information to be called to control assembly 150 by the requestor.Then, the attribute of the information correction appointed object that control assembly 150 usefulness requestors provide, and return solicited status and be modified the attribute of appointed object.Shown in

frame

346 and 348.

According to a further aspect in the invention, can lock object, make them can only could be after the server release that object is locked by access.In an explanation embodiment, object can lock by object level, partition level or device level.Add latch mechanism and provide access plan for internal server.In a preferred embodiment, dispatch parallel renewal and during safeguarding, forbid access with this lock.Figure 20,21 and 22 is process flow diagrams that explanation can be used as the locking method of Get_Attribute and Set_Attribute method example.But, also provide additional detail to the object lesson of these methods, make it to be used in shared data between requestor's the cluster.

Figure 20 is the process flow diagram of explanation Read_Lock_Attributes method.By requestor 116 to control assembly 150 License Info, object, subregion are provided or install ID, the parameter that locks and desired optional information, call the method shown in frame 354.In response, control assembly 150 determines whether appointed object is provided with lock.Then, control assembly 150 returns solicited status for the requestor who has lock.Shown in frame 356.

Figure 21 is the process flow diagram of explanation Set_Lock_Attributes method.By License Info, object, subregion or device identification information, the parameter that locks and optional information are provided, the requestor can be called, shown in frame 362.When calling this method, control assembly 150 is checked the lock with the sign object association.Shown in frame 364.Then, control assembly requestor's on probation sign is finished and is locked or unlocking operation.Shown in frame 366.If the requestor of solicit operation is the owner of lock, then carry out this operation.Otherwise do not carry out this operation.No matter which kind of situation, control assembly 150 returns solicited status and has the ID of the server of lock.Shown in frame 368.

Figure 22 is the process flow diagram of explanation Reset_Lock_Attribute method.When no longer including this function, locks the server that has lock with this function replacement.By being provided, License Info, object, subregion or device identification information, lock parameter and desired optional information called the method.Shown in frame 374.In response, control assembly 150 pairs of appointed objects, subregion or devices lock, shown in frame 376.And return solicited status and have the identifier of locking server.Shown in frame 378.

Figure 23 and 24 is process flow diagrams of explanation Get and Set_Device_Association method.Relation between these method definition or inquiry unit 110-112.Illustrative of this relation is implemented to comprise: take one of memory storage 110-112 as first device of this group device or main device and all the other install and are the subordinate group member of this group.The 1st device of this group or main device are responsible for the other member of change propagation with the device attribute.If the attribute setting does not provide from this group first device or main device, then other member should refuse these attribute settings.For making memory storage 110-112 carry out these functions, they have the ability of self-check.This makes these devices can check self is to determine whether a being member of bigger device group more.

Explanation Get_Device_Associations method among Figure 23.By the method that provides License Info and optional information to call, shown in frame 384.In response, control assembly 150 returns solicited status and this device becomes the relation that the group member asks.Shown in frame 386.Figure 24 is the process flow diagram of Set_Device_Associations method.By providing License Info, optional information, membership table and the related attribute of definition to call the method, shown in frame 392.In response, control assembly 150 is revised contained device affiliated partner 156 on the medium, shown in frame 394.The device affiliated partner of revising comprises the time marker that attribute that the requestor provides and indicated object be modified at last etc.Control assembly 150 returns solicited status, shown in frame 396.

Above-mentioned License Info permission file server 114 usefulness door is controlled the access to storer, and by controlling which requestor 116-120, file server 114 provides necessary voucher, to obtain the response of memory storage 110-112.File server 114 is gone back command storage 110-112, and they must be the safety policies that depends on installation, bear the I/O request.Adopt the Set_Object_Attributes method, illustrate that schematically the key that will be subordinated to the security admission ability conveys to memory storage 110-112.If to the certain safe level of memory storage 110-112 device, then memory storage can be configured to security and checks each I/O order.But as mentioned above, some application need not adopted security.And then, if having some, specific server cluster is positioned at device on another facility, it is contemplated that the safe level higher with the communication definitions of distant place device then needn't be like this to this locality communication.This allows distant place requestor or server security, but avoids the performance loss that causes with same security because of to local requestor or server.

And then each memory storage 110-112 preferably comprises readable monotone increasing clock, is used for beating time marker to security information and object.In an illustrative embodiment, base synchronously when the clock of each device and total system.In another illustrative embodiment, 114 pairs of file servers provide deviation between the memory storage and value one by one.

This shows, the invention provides such as disc driver OO memory storage it than conventional memory storage remarkable advantage is arranged.OO memory storage has significantly improved cluster architecture.For example, by storing data in OO mode, these data can be by the memory storage self-management.Object for resident data provides abundant knowledge, is enough to bear the responsibility of managing himself space to memory storage.And when device had configuration information about logic entity, control data was shared more intelligently.For example, if the data that are stored in the block oriented device are shared by two systems, then necessary all metadata of parallel access activity of controlling.In contrast, in OO device, many metadata activities are opaque to the system that visits it.Like this, system only need be concerned about the access conflict to user data.In addition, itself finishes space management device, just can avoid attempting to manage at one time arguement and the confusion that same storage space produces because of two systems.

In addition, being abstracted into the easier multimachine kind of carrying out of object calculates.OO memory storage provides the ability of the interruptable tissue of a kind of operating system at least.

And then, use OO memory storage to have many reasons to strengthen the performance of group system.For example, metadata never needs release unit itself, thereby has eliminated the I/O operation of some.

In addition, device all know at any time which to as if open or close, utilize this information can more effective cached data.Because device is known the form of positive reading object, thereby it is more effective to look ahead.Memory storage can more effectively be determined sequential access mode.High-speed cache in the device can once be that its system of a plurality of positive accesses preserves metadata.In addition, device can participate in serving the quality of resolution, such as where store data is more suitable.Only when having a responsibility for allocate memory, to do like this in device.In contrast, almost neither one operating system can be by the storage area distribute data of dish magnetic driven device, so, install and self possess this ability and just strengthened device performance.

The present invention includes a kind of data storage device 112, it comprises medium 132, the data storage that is configured to a plurality of object 124-126 thereon, each object has the attribute of this characteristics of objects of expression.Control assembly 150 operationally is coupled in medium 132, and is configured as object 124-126 interface 128 is provided.The method (method 0-method N) that access object 124-126 is called is showed at interface 128.

In a preferred embodiment, a plurality of object 124-126 comprise device controlling object 154, and it has the attribute of expression data storage device 110 features.In another embodiment, medium is divided into a plurality of subregions 158,160,162, and each subregion comprises a plurality of object 124-126 here.A plurality of objects comprise a plurality of subregion controlling object 164 corresponding to subregion 158,160,162, and each subregion controlling object 164 comprises the attribute of expression respective partition feature here.Subregion controlling object 164 can also comprise the feature that belongs to all objects in the respective partition.A plurality of partition list objects 166 and a plurality of subregion 158,160,162 are related and comprise that expression identification is stored in the attribute of the recognition data of object in the relevant partitions.

The method that interface 128 is showed comprises by the recognition data relevant with appointed object before discharging makes the delet method of control assembly 150 from medium 132 deletion appointed objects.Method also comprises the method for creating the division, and it makes control assembly 150 be divided into a plurality of subregions to medium 132 when being called.The deletion partition method can be called and make control assembly 150 to delete a specified partition from medium 132.

In the embodiment of another explanation, a plurality of objects comprise a device affiliated partner 156, and it comprises the attribute of relevance between the two or more data storage devices of expression.A kind of device correlating method can be called and make control assembly 150 access relating attributes.Can adopt the device correlating method to make control assembly 150 obtain and return relating attribute or access relating attribute.

In another illustrated embodiment, method comprises deployment method, and when the person of being requested 116 called, the person of being requested 116 provided the object on the accessing storage devices 110.

Open creation method, when the person of being requested 116 calls, make control assembly 150 in medium 132, create a new object with requestor's 116 specified attributes.

In the embodiment of another explanation, a kind of update method of opening is provided, when the person of being requested 116 calls, make control assembly 150 revise the object that the requestor is discerned in requestor's 116 specified modes.Can call wiring method, make control assembly 150 write appointed object to data, can call method for closing, make control assembly 150 close appointed object.

In the embodiment of another explanation, can call the derived object method, make control assembly 150 copy to second data storage device 112 to appointed object.A kind of object properties method and a kind of object properties method that is provided with of obtaining also is provided, can calls them, make control assembly 150 obtain and return the attribute of appointed object or the attribute of appointed object is set.Can also adopt locking means to make the locking attribute of control assembly 150 access appointed objects.

The present invention also can be used as on disc driver data storing method and implements.This method comprise information as object storage on disk and by calling according to the step of several different methods (or function) access information as mentioned above.The present invention also can act on data-storage system and implement, and this data-storage system comprises one or more disc drivers, and they are arranged with respect to data storage device according to as discussed above.The present invention also can be used as the computer-readable media (storer in the control assembly 150 for example of storage instruction, perhaps one of disk 132, perhaps another computer-readable media) implements, described instruction is when being carried out by the computing machine in the data-storage system, make computing machine be stored in data on the disk as a plurality of object 124-126, described object has the attribute of this characteristics of objects of expression.Described instruction also makes computing machine by calling the function of showing to the interface of described object by the object on the described interface accessing disk 132 when being performed.

Should be appreciated that, though above narrated many feature and advantage of each embodiment of the present invention and its 26S Proteasome Structure and Function be described in detail in detail, but this announcement only is exemplary, in principle of the present invention, can at length make many conversion, especially aspect structure and configuration, so that the present invention includes the represented gamut of the broader sense of the term in the claims.For example, do not depart from the scope of the present invention and spirit, particular element can be depending on the specific interface method of use and changes, and in fact still keeps identical function.

Claims

Modification according to the 19th of treaty

19. data storage device as claimed in claim 1 is characterized in that: described method comprises:

Locking means when being called, makes that the locking attribute of described control assembly visit appointed object, described locking attribute are that in described appointed object, specified partition and the data storage device which is current addressable expression.

20. a data storing method on disc driver is characterized in that said method comprising the steps of:

(a) data as a plurality of object storage on disk, each object have the expression this characteristics of objects attribute; And

(b) by calling the function of showing, by the described object on the described disk of described interface access to the interface of this object.

21. method as claimed in claim 20 is characterized in that: described storing step (a) comprises step:

Store a device affiliated partner, it comprises the relating attribute of relevance between the two or more disc drivers of expression.

22. method as claimed in claim 21 is characterized in that: described access step (b) comprises step:

Call and obtain the relating attribute function, to obtain and to return this relating attribute; And

Call the relating attribute function is set, with the relating attribute in the setting device affiliated partner.

23. a data-storage system that comprises first disc driver is characterized in that described first disc driver comprises:

Data head;

Data storage disk is rotatably installed with respect to described data disk, stores the data as a plurality of object configurations on it, and each object has the attribute of this characteristics of objects of expression; And

The disk drive controller is carried out control assembly, operationally is coupled to described data storage disk, and being configured to provides the interface method that the described object of described showing interface access is called to described object.

24. a computer-readable media stores instruction on it, when the computing machine in the data-storage system was carried out, described instruction made described computing machine carry out following steps:

(a) data as a plurality of object storage on the data storage magnetic head, each object have the expression this characteristics of objects attribute; And

(b) by calling the function of showing, by the described object on the described data storage disk of described interface access to the interface of described object.

Claims

1. data storage device is characterized in that described device comprises:

Medium, the data storage that is configured to a plurality of objects thereon, each object has the attribute of this characteristics of objects of expression; And

Control assembly operationally is coupled in described medium, and being configured to provides the interface to described object, and described showing interface is visited the method that described object calls.

2. data storage device as claimed in claim 1 is characterized in that: described a plurality of objects comprise:

The device controlling object comprises the attribute of representing the data storage device feature.

3. data storage device as claimed in claim 2 is characterized in that: described device controlling object comprises on the described medium of expression the attribute of other characteristics of objects in a plurality of objects.

4. data storage device as claimed in claim 1 is characterized in that: described medium is divided into a plurality of subregions, and each subregion comprises a plurality of objects, and here, described a plurality of objects comprise:

Corresponding to a plurality of subregion controlling object of a plurality of subregions, each subregion controlling object comprises the attribute of expression respective partition feature.

5. data storage device as claimed in claim 4 is characterized in that: each described subregion controlling object comprises that expression belongs to the attribute of the feature of all objects in the respective partition.

6. data storage device as claimed in claim 4 is characterized in that: described a plurality of objects comprise:

The a plurality of partition list objects related with described a plurality of subregions, each partition list object comprise that expression identification is stored in the attribute of the recognition data of object in the relevant partitions.

7. data storage device as claimed in claim 6 is characterized in that: described method comprises:

Delet method makes control assembly from appointed object of medium deletion by recognition data relevant with appointed object before discharging when being called.

8. data storage device as claimed in claim 4 is characterized in that: described method comprises:

The method that creates the division makes described control assembly that medium is divided into a plurality of subregions when being called.

9. data storage device as claimed in claim 4 is characterized in that: described method comprises:

The deletion partition method makes described control assembly from specified partition of medium deletion when being called.

10. data storage device as claimed in claim 1 is characterized in that: some objects in described a plurality of objects have they are stored in part on a plurality of memory storages, and here, described a plurality of objects comprise:

The device affiliated partner comprises the relating attribute of representing the central relevance of two or more data storage devices.

11. data storage device as claimed in claim 10 is characterized in that: described method comprises:

The device correlating method makes described control assembly visit described relating attribute when being called.

12. data storage device as claimed in claim 1 is characterized in that: described method comprises:

Open creation method, when the person of being requested calls, make described control assembly on medium, create a new object with the specified attribute of described request person.

13. data storage device as claimed in claim 1 is characterized in that: described method comprises:

Open update method, when the person of being requested calls, make described control assembly revise specified object by the requestor in the specified mode of requestor.

14. data storage device as claimed in claim 1 is characterized in that: described method comprises:

Open reading method, when the person of being requested calls, make described control assembly open the object of the person's of being requested identification, only for reading.

15. data storage device as claimed in claim 1 is characterized in that: described memory storage can be coupled with the requestor, and here, described method comprises:

Reading method when the person of being requested calls, makes described control assembly return to be stored in data in the specified object of requestor.

16. data storage device as claimed in claim 15 is characterized in that: described method comprises:

Wiring method when the person of being requested calls, makes described control assembly be written to the specified object by the requestor to the specified data of requestor.

17. data storage device as claimed in claim 15 is characterized in that: described method comprises:

Method for closing when the person of being requested calls, makes described control assembly discern the appointed object of the person of being requested with front opening, as closing.

18. data storage device as claimed in claim 1 is characterized in that: described data storage device can be coupled with second data storage device, and here, described method comprises:

Derived object when being called, makes described control assembly copy to second data storage device to appointed object.

Data head;

Control assembly operationally is coupled to described data storage disk, and being configured to provides the interface method that the described object of described showing interface access is called to described object.