CN101727291B - System and method for embedded integrated virtual tape library - Google Patents
System and method for embedded integrated virtual tape library Download PDFInfo
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- CN101727291B CN101727291B CN2008101675827A CN200810167582A CN101727291B CN 101727291 B CN101727291 B CN 101727291B CN 2008101675827 A CN2008101675827 A CN 2008101675827A CN 200810167582 A CN200810167582 A CN 200810167582A CN 101727291 B CN101727291 B CN 101727291B
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Abstract
The invention provides a system and a method for an embedded integrated virtual tape library, and belongs to the technical field of computer storage. The system comprises a virtual medium switching module, a virtual tape driver module, a virtual tape medium module, a decompression module, a filing module, a parallel communication module and a duplication module. The method can simulate a complete virtual tape library system in one controller, and also can distribute drivers and tapes in the virtual tape library in different controllers through a SATA chip on an embedded controller which directly controls a SATA (Serial Advanced Technology Attachment) disk in a case to pass through a virtual program running in the embedded controller, wherein a virtual medium exchange unit is arranged in one of the controllers; and each controller can simulate the virtual drivers and the virtual tapes. Through the virtual program run by the CPU chip on the embedded controllers, the integrated virtual tape library system can be stored and controlled. While the integrated virtual tape library system is stored and controlled, the reliability, stability and expansibility of the system are improved.
Description
Technical field
The present invention relates to computer memory technical field.Relate in particular to a kind of embedded integrated virtual tape libraries system and method.
Background technology
Internet makes computer memory technical that revolutionary variation is taking place.This variation mainly shows three aspects: the rapid expansion that at first is memory capacity.Next is the extension of data ready time.Internet makes network data must guarantee to be in 24 hours every days, 7 days weekly, annual 365 days ready state.At last, the structure of data storage is different.Storage products in the market mainly contains disk array, magnetic tape station and tape library, CD server etc.
Tape library is a kind of cabinet-type, many magnetic tape stations is incorporated into a data backup device in the closed system, is one of key equipment in the offline storage system.It mainly is made up of tape drive, mechanical arm and tape, can realize tape unloading and loading automatically, can administer in storage and realize intelligent backup and functions such as recovery and monitoring statistics under the control of software.But because tape is the main medium that the user backs up in the tape library, for a long time, the user endures the various puzzlements of tape library to the fullest extent, wherein outstanding, be that mechanical tape library equipment poor stability and recovery capability are not good enough.Owing to the drop of disk price and the advantage that the relative tape of disk is had, disk becomes main storage medium replacement tape one and becomes trend gradually in recent years.
The notion of VTL surplus 10 year before promptly by IBM, famous storage such as StorageTek manufacturer adopts.The mode that current virtual tape library is popular is that virtualized server adds back end plate battle array (Fig. 1).Common VTL product such as the EDL series of products of EMC, the TS series of products of IBM etc.Move virtualization program on the virtualized server, fictionalize tape unit and communicate with main frame, deposit data is on the end plate battle array of back.For example main frame is initiated backup, after virtualized server is received request, handles through VTL, and final data is written on the end plate battle array of back.Virtualized server generally all is the server of PC framework, and reliability and stability all do not have integrated Embedded machine high.Logical block owing to VTL can only exist in the virtualized server in addition; Limit the extended capability of current virtualized server technically; The logical block that is VTL can only exist in the virtualized server, and the performance limitations of virtualized server itself is led and put the backup performance that can't further improve VTL.
Summary of the invention
The object of the invention is for solving above-mentioned a kind of embedded integrated VTL system and method that proposed.Through (the Serial Advanced Technology Attachment of the SATA on the embedded controller; Serial hardware driver interface) chip is directly controlled the SATA disk in the cabinet; When fundamental purpose is to realize storing and control incorporate VTL system, improve reliability, stability and the extendability of system.
For solving the problems of the technologies described above; The present invention provides a kind of embedded integrated VTL system, comprising: virtual medium Switching Module, virtual tape drive module, virtual tape medium module, decompression module, filing module, parallel communications module and replication module.
Said virtual medium Switching Module, its core physical unit are the controllers that is made up of processor, front end HPI, rear end memory interface, built-in disk interface, compressing card, and controller is managed and the virtual emulation tape built-in or rear end disk array.
Virtual program on the controller is given open system host through the front end HPI with virtual Medium Exchange unit and tape drive unit maps.The rear end memory interface can connect disk array, also can connect the physics tape library.When connecting the physics tape pool, can be with transparent the duplicating between virtual tape library and physics tape pool of the data on the virtual tape medium.
The present invention also provides a kind of embedded integrated VTL systems approach, comprising:
Through the virtual program that moves in the controller, can driver in the VTL and tape be distributed in the Different control device, wherein in controller, each controller can both be simulated virtual drive and virtual tape to the virtual medium crosspoint therein.
Description of drawings
Fig. 1 is a VTL structural representation in the prior art;
Fig. 2 is an embedded integrated virtual tape libraries logic function modular structure synoptic diagram of the present invention;
Fig. 3 is that virtual program of the present invention is set up VTL treatment scheme synoptic diagram;
Fig. 4 is a virtual program treatment scheme synoptic diagram of the present invention;
Fig. 5 is that virtual tape data of the present invention write schematic flow sheet;
Fig. 6 is that the present invention realizes the data compression schematic flow sheet;
Fig. 7 is a data filing schematic flow sheet of the present invention
Fig. 8 is that the present invention is the structural representation of parallel processing;
Fig. 9 is that the present invention realizes duplicating schematic flow sheet.
Figure 10 is an embedded integrated virtual tape libraries of the present invention system external interface synoptic diagram
Figure 11 is the direct-connected integrated mode synoptic diagram of the embodiment of the invention
Figure 12 is that the embodiment of the invention is passed through SAN network sharing mode synoptic diagram
Figure 13 is that the embodiment of the invention is duplicated the embodiment synoptic diagram
Figure 14 is an embodiment of the invention parallel mode synoptic diagram
Embodiment
In order to make those skilled in the art person understand the scheme of the embodiment of the invention better, the embodiment of the invention is done further to specify below in conjunction with accompanying drawing and embodiment.
With reference to Fig. 1, be the typical virtual tape library structure that adopts prior art at present, add the rear end disk array by virtual server and form, virtual tape equipment also communicates with main frame, and deposit data is on the disk array of rear end.Main frame is initiated backup, after virtual server is received request, handles through VTL, and final data is written on the disk array of rear end.
With reference to Fig. 2, be embedded integrated virtual tape libraries logic function modular structure synoptic diagram of the present invention: comprising: virtual medium Switching Module, virtual tape drive module, virtual tape medium module, decompression module, filing module, parallel communications module and replication module.
With reference to Fig. 3, be VTL inner structure synoptic diagram of the present invention, principle mainly may further comprise the steps:
Virtual program is set up VTL and corresponding treatment scheme.The SCSI that the VTL processing host is sent instructs, and gives corresponding virtual unit (virtual tape groove 2 and virtual tape drive unit 3) with command assignment; Virtual medium crosspoint 1 can be given quantity and address number of main frame Returning equipment model, state, driver and tape groove etc.Main frame can moving through virtual medium crosspoint 1 managing virtual tape.Virtual tape drive unit 3 returns to essential informations such as the capacity, density, block size of main frame tape, and processing host request such as is provided with to read-write, location, the attribute of tape;
To the read-write requests of tape, virtual tape drive can change into the read-write requests to the virtual tape medium.
With reference to Fig. 4, be virtual program treatment scheme synoptic diagram of the present invention, mainly may further comprise the steps:
Front end HPI on the VTL drives; Simulation scsi target end is communicated by letter with the host adaptor on the main frame, when having received the scsi command that main frame is sent; To instruct the packing after pass to SCSI (SmallComputer System Interface, minicomputer system special purpose interface);
Interpretation layer is issued virtual unit with instruction, and after virtual unit is accomplished instruction, interpretation layer will order state and the return data accomplished to send to main frame through the front end HPI again);
Virtual tape is based upon on the logical volume, and when system initialization, logical volume is added in the virtual tape groove;
Logical volume is construed to tape by the virtual medium crosspoint, when main frame carries out label to tape;
Virtual drive can be formatted into the virtual tape form with logical volume, and follow-up data to this tape write, and also can be undertaken by this form.
With reference to Fig. 5, be that virtual tape data of the present invention write schematic flow sheet, mainly may further comprise the steps:
The read-write of virtual tape finally is converted into the read-write to disk.Write in the processing queue that data are placed in compression;
Finish dealing with in the processing queue compression after data, find the writing position on disk according to index;
System writes disk with data behind the index that upgrades the data recording on tape piece;
Sense data if desired at first finds the position of required data according to index, then it is read from disk, and be placed on data in the processing queue of decompression, accomplish decompress(ion) after, return to main frame.
With reference to Fig. 6; The present invention realizes the data compression schematic flow sheet; The compressing card 611 of VTL is that processing logic is encapsulated in a FPGA (Field Programmable Gate Array; Field programmable gate array) in the pci bus card, communicate by letter with virtual program through the driver of compressing card.The processed compressed flow process mainly may further comprise the steps:
After step 604, the processing, put among the internal memory of appointment;
With reference to Fig. 7, be data filing schematic flow sheet of the present invention, mainly may further comprise the steps:
Step 701, the filing processing unit is set up index file according to virtual tape; Through information extraction from content, set up the correspondence of virtual tape and physical tape;
Step 702, filing processing unit will be filed request and issued the filing driving.
Step 703, filing drives the data in the tape is written in the physical tape.
With reference to Fig. 8, be that the present invention is the structural representation of parallel processing module:
The senior embodiment of this modular system VTL is parallel processing, and so-called parallel processing is exactly that a plurality of independent VTL heads are formed a big VTL, passes through local area network communication between the VTL head.Each head can virtual one or more tape drives unit, and the Medium Exchange unit is positioned on one of them head, and this head is managed virtual tape and virtual drive in other heads as host node.Through walking abreast of a plurality of heads, realized that the linearity of LAN-FREE backup performance promotes.
With reference to Fig. 9, the present invention realizes duplicating schematic flow sheet, mainly may further comprise the steps:
Step 902 after reading, is calculated identifying code, and identifying code and data are sent.
With reference to Figure 10, be embedded integrated virtual tape libraries of the present invention system external interface synoptic diagram:
Embedded integrated virtual tape libraries system virtualization tape library interface of the present invention comprises:
The front end HPI is supported polytype; Comprise optical fiber, SCSI, iSCSI (internet SmallComputer System Interface; The scsi data piece is mapped to Ethernet data packet network communication standard), according to the difference of interface, can be suitable for different backup environment.Scsi interface is supported the backup environment of DAS, the backup environment of the support SAN of optical fiber, and ISCSI can support the backup environment of LAN and wide area network.
The rear end memory interface can connect the equipment of supporting optical fiber, SCSI, ISCSI.When connecting the physics tape library; The filing module of VTL; Can export to the data on the virtual tape on the physical tape of rear end; Data on the two media are identical, and physical tape can directly be used for restore data, also can file module through VTL and import on the virtual tape.
Now three embodiment of the present invention are described.
With reference to Figure 11, be the direct-connected integrated mode synoptic diagram of the embodiment of the invention:
Open system host 1 (operating system is Windows2003) model DELL1850, HBA (Host BusAdapter, host bus adaptor) card 5 is a QLA23002Gb light card.Mode through direct-connected 3 is used embedded integrated VTL 2 of the present invention, and model is 1000F, capacity 1TB optical fiber HPI, SCSI memory interface.Direct-connected 3 also can be SCSI, ISCSI, and this will want consistent with the host adaptor on the main frame.Embedded integrated VTL of the present invention connects 4 with data importing or export on the physics tape pool STKL20 through SCSI.
With reference to Figure 12, be that the embodiment of the invention is passed through SAN network sharing mode synoptic diagram:
Host server among Figure 12 (operating system is SCO UNIX), operation Informix IDS7.31 database, the about 100GB of data volume.HP-UX, database are Informix 9.40, the professional and about 360GB of financial data amount.Embedded integrated VTL 6000F of the present invention, capacity 6TB, optical fiber interface.Backup software adopts the EMC Net Worker network edition.Optical fiber switch 1 is Brocade4100.It is 260GB that the user needs the backed up data amount; Using traditional Automated Tape Library full backup time once is 88 minutes; The time tapers to 25 minutes after having disposed VTL, and the average velocity of backup has reached 120MB/S, can reach the backup rate of 150Mb/S; The average velocity that recovers has reached 80Mb/s, for the user has practiced thrift the backup/restoration time over half.
With reference to Figure 13, be that the embodiment of the invention is duplicated the embodiment synoptic diagram:
Local host 1 (operating system is Windows2003) backups to local side embedded integrated VTL of the present invention through EMC NetWorker; Local side embedded integrated VTL of the present invention regularly copies data in the remote port embedded integrated VTL of the present invention, remote port main frame 2 (operating system is Windows2003) through EMC NetWorker can be regularly from the remote port embedded integrated VTL of the present invention restore data.Also can the data of remote port embedded integrated VTL of the present invention be duplicated back local side embedded integrated VTL of the present invention, in the local recovery data.For user's data provides duplicate protection, also can realize the function of disaster tolerance.
With reference to Figure 14, be embodiment of the invention parallel mode synoptic diagram:
More than the embodiment of the invention has been carried out detailed introduction, used embodiment among this paper the present invention set forth, the explanation of above embodiment just is used for help understanding system and method for the present invention; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (6)
1. embedded integrated virtual tape libraries system; It is characterized in that; Said system is made up of virtual medium Switching Module, virtual tape drive module, virtual tape medium module, decompression module, filing module, parallel communications module and replication module, wherein:
Said virtual medium Switching Module returns to the quantity and the address number of main process equipment model, state, driver and tape groove;
Said virtual tape drive module returns to capacity, density, the block size essential information of main frame tape, and processing host is provided with request to read-write, location, the attribute of tape;
Said virtual tape medium module, when main frame carried out label to tape, virtual drive can be formatted into the virtual tape form with logical volume;
Said decompression module is to be encapsulated in a pci bus card among the FPGA, communicates by letter with virtual program through the driver of compressing card;
Said filing module exports to the data on the virtual tape on the physical tape of rear end;
Said parallel communications module realizes big VTL of a plurality of independent VTL heads compositions;
Said replication module filing module scanning of home tape according to the Copy Info of last time, finds the data block and the index that need duplicate; After reading; Calculate identifying code, identifying code and data are sent, after the remote dummy tape library is received; According to the identifying code checking data integrity, no problemly just write.
2. embedded integrated virtual tape libraries according to claim 1 system is characterized in that said system directly controls the SATA disk in the cabinet through the SATA chip on the embedded controller.
3. embedded integrated virtual tape libraries according to claim 1 system; It is characterized in that; Said system is used to realize unified management VTL system and expansion VTL system through the virtual program of the operation of the SATA chip on the embedded controller.
4. embedded integrated virtual tape libraries according to claim 1 system; It is characterized in that; Virtual medium Switching Module in the said system; The core physical unit is the controller that is made up of processor, front end HPI, rear end memory interface, built-in disk interface, compressing card, and controller is managed and the virtual emulation tape built-in or rear end disk array.
5. embedded integrated virtual tape libraries according to claim 2 system; It is characterized in that; Said system also comprises: the SATA chip that is used to move virtual program on the controller; Said SATA chip is given open system host through the front end HPI with virtual Medium Exchange unit and tape drive unit maps; The rear end memory interface connects disk array, also connects the physics tape library; When connecting the physics tape pool, with transparent the duplicating between virtual tape library and physics tape pool of the data on the virtual tape medium.
6. system according to claim 5 is characterized in that, said virtual program embeds in the SATA chip on the controller.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101968722A (en) * | 2010-09-28 | 2011-02-09 | 天津火星科技有限公司 | Flash memory based magnetic tape simulation method |
| CN103780634B (en) * | 2012-10-17 | 2017-02-22 | 华为技术有限公司 | Data interaction method and data interaction device |
| CN103810059A (en) * | 2012-11-15 | 2014-05-21 | 国家电网公司 | Backup method and device |
| CN103049224B (en) * | 2012-12-28 | 2015-12-23 | 华为技术有限公司 | By the methods, devices and systems of data importing physical tape |
| CN105022680A (en) * | 2015-08-05 | 2015-11-04 | 浪潮(北京)电子信息产业有限公司 | Data backup method and device |
| CN107015889B (en) * | 2017-04-12 | 2019-11-22 | 广州市品高软件股份有限公司 | A kind of implementation method of the multi-user virtual tape library based on cloud computing |
| CN108132858A (en) * | 2017-12-22 | 2018-06-08 | 周川 | A kind of disaster-tolerant backup method |
| CN108170377B (en) * | 2017-12-27 | 2022-04-01 | 上海爱数信息技术股份有限公司 | Backup method for supporting multi-drive concurrent writing of tape library |
| CN109783276B (en) * | 2018-12-19 | 2021-03-02 | 远光软件股份有限公司 | Data backup and recovery device and method based on special compression card |
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| CN1862476A (en) * | 2006-04-19 | 2006-11-15 | 华中科技大学 | Super large capacity virtual magnetic disk storage system |
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| CN1862476A (en) * | 2006-04-19 | 2006-11-15 | 华中科技大学 | Super large capacity virtual magnetic disk storage system |
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| JP特表2008-535103A 2008.08.28 |
| US 6,061,751 A,2000.05.09,全文. |
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