CN101022425B - ISCSI-based storage resource distributing method - Google Patents
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- CN101022425B CN101022425B CN200710092150XA CN200710092150A CN101022425B CN 101022425 B CN101022425 B CN 101022425B CN 200710092150X A CN200710092150X A CN 200710092150XA CN 200710092150 A CN200710092150 A CN 200710092150A CN 101022425 B CN101022425 B CN 101022425B
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Abstract
A method for distributing stored resource based on ISCSI includes distributing IP address to client end automatically by storage system and setting up ISCSI connection with storage system automatically by client for obtaining stored resource after IP address is obtain by client end.
Description
Technical field
The present invention relates to distribution method, relate in particular to distribution method based on the storage resources of ISCSI (Internet Small Computer System Interface, Internet Small Computer Systems Interface) agreement through the storage resources of network.
Background technology
Now; The computer system part is through accomplishing automation in the structure of single or minimum number; For example computer comprises central processing unit (CPU), hard disk drive, random-access memory (ram), read-only memory (ROM), floppy disk and compact disc read-only memory (CDRM) or the like; This kind equipment usually through another the centralized unit in the computer system (as; Mainboard) is connected to computerized system, connects and said equipment can pass through SCSI (Small Computer SystemInterface, small computer system interface).
SCSI (Small Computer System Interface; Small computer system interface) the standards system standard process of carrying out data block I/O (I/O) operation between applied host machine and the external equipment, external equipment comprises disk, tape, CD, printer, scanner etc.The reference model of scsi device is a typical client-server structure; A side (like application server) who initiates services request is called initiator (Initiator); A side (like storage system) who accepts services request is called target side (Target), and different physical connection modes can be arranged between initiator and the target side.
ISCSI (Internet Small Computer System Interface; Internet Small Computer Systems Interface) is a kind of SCSI host-host protocol, in order between client and storage system, to transmit scsi command and data through IP network based on TCP/IP.At present, ISCSI technology standardization (RFC3720, RFC3721 etc.), and in the industry cycle progressively obtain widely and use.
A typical application of ISCSI agreement is as shown in Figure 1.Application server is installed an ISCSI initiator module, an integrated ISCSI target module in the storage system.Application server then scsi command and/or data encapsulation in the ISCSI message, send to storage system through IP network, storage system is handled each ISCSI message, takes out data wherein and is written in the storage medium (like disk).
Realize that through ISCSI the method for memory allocated resource is at present; Network manager's storage resources that foundation needs on storage system in advance; The IP address of while static configuration client and initiator's title; Client connects through the ISCSI target module of ISCSI initiator module and storage system, thereby uses storage resources.
With Fig. 1 is example; The IP address of storage system is 192.168.0.1; Manually set up the resource A of a 100G above that, the name of the IP address of manual static configuration application server: 192.168.0.11, and the ISCSI initiator of manual static configuration application server then is called iqn.2007-02.com.h3c.storage:server11; Utilize the ISCSI initiator module that application server carries and the ISCSI target module of storage system to connect, resource A is carried out reading and writing data.
Therefore, existing scheme operation is more loaded down with trivial details: at first the storage resources on the storage system needs the keeper to set up by hand, and the IP address of application server and sponsor party name all need the configuration of keeper's static programming simultaneously, and both connections are set up also needs manual operations.Especially, when client was a lot, the workload of manual configuration was huge, and easy error.
Summary of the invention
The object of the present invention is to provide a kind of distribution method of the storage resources based on ISCSI; This method is the memory allocated resource automatically; Be application server Dynamic Programming configuration simultaneously, and between application server and storage system service device, connect automatically.
Therefore in order to reach goal of the invention of the present invention; The present invention is a kind of distribution method of storage resources; Wherein, this method is included in launches Dynamic Host Configuration Protocol server end function on the storage system, on client, launch the dhcp client function; After client and storage system are set up physical connection, send the dynamic assignment request of IP address to this storage system based on DHCP; This method also comprises: A, and storage system is client distributing IP address automatically; B, client is initiated to set up ISCSI from the trend storage system and is connected after obtaining the IP address, to obtain storage resources.
The distribution method of the described storage resources based on ISCSI of preferred specific embodiment according to the present invention, wherein, said steps A is based on that the agreement of dynamic assignment IP address accomplishes.
The distribution method of the described storage resources based on ISCSI of preferred specific embodiment according to the present invention; Wherein, before said steps A, comprise that storage system judges the step that this client file a request is whether legal; If this client is legal then to be its distributing IP address; Divide resource, the information according to this client is the resource name of being divided simultaneously, if not rule is returned error message to client.
The distribution method of the described storage resources based on ISCSI of preferred specific embodiment according to the present invention; Wherein, Before said steps A, comprise also storage system judges whether self has the step of enough storage resources, then be this client distributing IP address divide resource if this storage system has enough storage resources; Information according to this client is the resource name of being divided simultaneously, if not rule is returned error message to client.
The distribution method of the described storage resources based on ISCSI of preferred specific embodiment according to the present invention; Wherein, Judge that in storage system whether legal in this client file a request step storage system judges according to the hardware identifier of this client whether it is legal.
The distribution method of the described storage resources based on ISCSI of preferred specific embodiment according to the present invention, wherein, the hardware identifier of said client is a MAC information.
The distribution method of the described storage resources based on ISCSI of preferred specific embodiment according to the present invention; Wherein, said step B further comprises: B1, judge through the ISCSI sponsor party name whether this client is legal; If it is legal; Then between client and storage system, set up ISCSI and connect, if illegal, execution in step B2; B2 refuses this ISCSI and connects.
The distribution method of the described storage resources based on ISCSI of preferred specific embodiment according to the present invention, wherein, in step B, client is ISCSI initiator name with the IP address that obtains.
In addition; In order to reach goal of the invention of the present invention; The present invention provides a kind of client that links to each other with storage system, it is characterized in that, this client comprises IP Address requests module and ISCSI link block; Said dynamic IP addressing request module is used for after client and storage system are set up physical connection, initiating the dynamic IP addressing request for allocation through the dhcp client function to said storage system; Said ISCSI processing module is initiated the ISCSI connection request to said storage system automatically after said storage system is returned the IP address.
The described client that links to each other with storage system of preferred specific embodiment according to the present invention; Wherein, This ISCSI link block further is included as the name unit of ISCSI initiator name; Said name unit is ISCSI initiator name according to the IP address that obtains after receiving the IP address that said storage system returns.
The storage system that the present invention also provides a kind of and above-mentioned client to link to each other; Wherein, Said storage system comprises the dynamic IP addressing distribution module; Launch Dynamic Host Configuration Protocol server end function on this dynamic IP addressing distribution module, receive and handle dynamic IP addressing request for allocation, distribute dynamic IP addressing to said client from said client.
The storage system that the described and above-mentioned client of preferred specific embodiment links to each other according to the present invention; Wherein, Said storage system further comprises MAC Address administration module and resource management module; Whether the MAC Address in the dynamic IP addressing request for allocation that said MAC Address administration module inspection is received is legal; Said resource management module checks whether said storage system exists the storage resources that meets the demands, and said MAC Address administration module and resource management module all return to said IP address assignment module with judged result.
The storage system that the described and above-mentioned client of preferred specific embodiment links to each other according to the present invention, wherein, after said IP address assignment module is obtained said judged result; To qualified request; Storage resources is divided in the distributing IP address, and names for the storage resources of dividing according to the information of this client; To ineligible request, return failure information.
The storage system that the described and above-mentioned client of preferred specific embodiment links to each other according to the present invention, wherein, said storage system further comprises the ISCSI processing module; Receive the ISCSI connection request of said client; Judge according to the sponsor party name of said client whether said client is legal, as be legal that then response connects; As be illegal, then refusal connects.
The invention has the advantages that to the invention enables that storage system can obtain storage resources automatically on the application server physical connection that almost Unsupervised member intervenes; In addition, thus the present invention can also prevent the illegal connection of illegal application server to ensure information security.
Description of drawings
Fig. 1 is according to the sketch map of the typical application of the ISCSI agreement of prior art;
Fig. 2 is according to the flow chart of the distribution method of the storage resources based on ISCSI of the present invention;
Fig. 3 storage system according to the invention is the flow chart of application server distributing IP address;
Fig. 4 is according to the sketch map of the typical application of the distribution method of the storage resources based on ISCSI of the present invention; And
Fig. 5 is according to the module map of the distributor of the storage resources based on ISCSI of the present invention.
Embodiment
In order to reach goal of the invention of the present invention; This specific embodiment is a kind of distribution method based on the storage resources of ISCSI of practical convenient; In order to set forth conveniently; This specific embodiment is explained the present invention with application server as client, and said client can be other various external equipments that comprise disk, tape, CD, printer, scanner etc. in practical application.
Basic principle of this specific embodiment and necessary process are: the user launches DHCP (Dynamic Host Configuration Protocol on storage system; DHCP) server side functionality; MAC (Media AccessControl, the medium access control) information table that one opening and closing method application server is arranged on storage system, simultaneously; Launch DHCP (Dynamic Host Configuration Protocol, DHCP) client functionality at the application server end.On the application server physical connection during storage system; Proposing dynamic IP addressing through the dhcp client function to storage system distributes; After storage system is received the dynamic IP addressing request for allocation; Judge that this application server is whether legal and whether storage resources is enough, and be the storage resources name or return error message according to judged result distributing IP address and storage resources and according to the information of client; Application server obtains after the dynamic IP addressing, is that title is launched ISCSI initiator function with the IP address that obtains then, sets up ISCSI with storage system automatically and is connected; After storage system is received the ISCSI connection request, whether be the dhcp client of own distributing IP address, and distribute the respective stored resource or refuse this ISCSI connection request according to judged result through this application server of Name check.After application server and storage system are set up ISCSI and be connected, can carry out normal reading and writing data to this storage resources.
Specify this each step below in conjunction with accompanying drawing based on the method for ISCSI memory allocated resource.As shown in Figure 2, the specific embodiment of this method is made up of three steps:
S1: application server sends the IP address assignment request to storage system.
On storage system, launch Dynamic Host Configuration Protocol server end function and user interface is provided; Thereby the user can specify unified resource allocation amount; Perhaps Option Field (the Option Field through DHCP; Inessential field) carry the relevant information of user's resource requirement sendout, based on the relevant information of this resource allocation amount, storage system is customizable to be application server memory allocated resource.On application server, launch simultaneously the dhcp client function.Therefore, application server sends the dynamic assignment request of IP address based on DHCP to this storage system after setting up physical connection through this user interface and storage system, and wherein, this IP address dynamic assignment request comprises the MAC information of this application server.
In this specific embodiment; This IP address dynamic assignment request comprises the MAC information of this application server and corresponding with subsequent step; Wherein the MAC information of application server also can be replaced by other hardware identifiers such as CPU sequence numbers, and corresponding with subsequent step.
S2: storage system is application server distributing IP address.
As stated,, on storage system, launch Dynamic Host Configuration Protocol server end function, thereby be application server distributing IP address based on DHCP corresponding on application server, launching the dhcp client function.This step specifically comprises three steps as shown in Figure 3.
S21: storage system judges whether the application server of this request of proposition is legal.
After receiving the dhcp address request from application server, storage system judges whether the application server of this request of proposition is legal, if illegal, refusal distributes the address and returns error message to this application server so; If legal, then carry out next step.
Wherein, Judge this application service its whether legal method is; MAC (the Media Access Control of storage valid application server on storage system; Medium access control) information table, after the IP address dynamic assignment request of receiving the MAC information that comprises this application server, whether storage system comprises the MAC information of this application server and then judges whether this application server is legal according to the MAC information table of its valid application server.
In this specific embodiment; The MAC information that storage system adopts application server is as the information of judging that this application server is whether legal, and the while storage system also can adopt other hardware identifiers such as CPU sequence number as the information of judging that this application server is whether legal.
S22: storage system judges whether self has enough resources.
After process step S21 judged that this application server is legal, storage system was judged the resource allocation amount whether enough user's appointments self are arranged, if inadequate resource, then refusal is given application server distributing IP address and returned error message to this application server; If resource is enough, then carry out next step.
S23: storage system marks off corresponding resource space and is this application server distributing IP address for this application server, is the resource space name that marks off according to the IP address of distributing to application server simultaneously.
In this specific embodiment; Storage system is the resource space name that marks off according to the IP address of distributing to application server, and wherein, storage system also can be the resource space name that marks off according to other hardware beacon information of application server; Such as MAC, CPU sequence number or the like.
Judgement through step S21 and S22; Confirm that this application server is legal; And this storage system has enough storage resources; Then storage system marks off corresponding memory space and is this application server distributing IP address for this application server, is corresponding memory space name according to giving the application server IP address allocated simultaneously.Wherein, the setting of step S21 and step S22 is unfixing with order, can change by customer requirements.
In this specific embodiment, DHCP adopts the mode of distributing automatically, and promptly Dynamic Host Configuration Protocol server just no longer reclaims after distributing the address, and same dhcp client obtains just no longer to discharge behind the IP address, and this also is the needed pattern of storage system applications.
In this specific embodiment, storage system and application server adopt the agreement of DHCP agreement as dynamic assignment IP address, in other embodiments, also can adopt the agreement of other agreements such as BOOTP as dynamic assignment IP address.
The required storage resources amount of client also can be informed storage system through other protocol interactions, thus let storage system customizes be the different client side Resources allocation.
S3: application server is initiated to set up ISCSI automatically to storage system and is connected.
Application server obtains after the IP address through DHCP; Then use this IP address name ISCSI sponsor party name; The memory space that is allocated to this application server from trend is initiated the ISCSI connection request, because this corresponding memory space is according to need not any manual operations for the name of application server IP address allocated.Wherein, ISCSI initiator's title also can adopt hardware identifier names such as network interface MAC Address, CPU sequence number, perhaps name according to the User Defined sign.
S4: storage system judges whether this application server is legal.
After storage system is received this ISCSI connection request of application server transmission; Judge through its ISCSI sponsor party name whether this application server is the application server of this storage system distributing IP address; If this application server is not the application server of this storage system distributing IP address; Then storage system is refused this ISCSI connection request and is returned error message to this application server, if this application server is the application server of this storage system distributing IP address, then carries out next step.
S5: storage system is set up ISCSI with this application server and is connected.
After definite this application server was the application server of this storage system distributing IP address, storage system was distributed corresponding storage resources to this application server, so this application server can read the data of its respective stored resource on this storage system.
Connecting with an application server and storage system below in conjunction with Fig. 4 is that example is explained a typical application based on distribution method of the present invention.The IP address of storage system is 192.168.0.1/24, and the scope of the IP address pool of Dynamic Host Configuration Protocol server end is 192.168.0.2～192.168.0.254, and it is 100G that storage system is set unified resource allocation amount.An application server A is integrated with an ISCSI initiator module (the ISCSI driver of software or a network interface card of supporting the ISCSI agreement).
After storage system on the A physical connection, initiate IP address dynamic assignment request, after storage system is received request based on DHCP; Whether the MAC Address of judging A is legal, and whether if legal, reexamining current storage system has enough resources; If have; Then distributing IP address 192.168.0.11 distributes to A, and the storage resources V that divides 100G simultaneously gives A, and this storage resources is according to the IP address called after of A: 100G-192.168.0.11.A, sets up ISCSI with the respective stored resource V of storage system automatically simultaneously and is connected for ISCSI initiator name: iqn.2007-02.com.h3c.storage:IP:192.168.0.11 according to the IP address that dynamically obtains, and V reads and writes to resource.
In addition; As shown in Figure 5; In order to reach goal of the invention of the present invention, this specific embodiment provides the storage system that comprises the IP address assignment module and comprises the dynamic IP addressing request module and the application server of ISCSI link block, and wherein the dynamic IP addressing request module of application server is sent the IP address assignment request to this IP address assignment module; This IP address assignment module is sent the IP address information to this application server, and this ISCSI link block storage system is sent ISCSI and set up request.
The user is provided with unified resource allocation amount on storage system; Perhaps the user can be through Option Field (the Option Field of DHCP; Inessential field) carries the relevant information of user's resource requirement sendout; Relevant information based on this resource allocation amount; Storage system is customizable to be application server memory allocated resource, and on the IP address assignment unit of storage system, launches DHCP (Dynamic Host Configuration Protocol, DHCP) server side functionality.In addition, in this application server, further comprise MAC Address administrative unit and rm-cell, and preserve MAC (Media Access Control, the medium access control) information table of valid application server.
Simultaneously, the user launches DHCP (Dynamic Host ConfigurationProtocol, DHCP) client functionality at the application server end.On the application server physical connection during storage system; Its dynamic IP addressing request module proposes the dynamic IP addressing request for allocation through the dhcp client function to the IP address assignment module of storage system; The IP address assignment module of storage system is before response dynamics IP address assignment request; Judge according to the MAC information table of valid application server whether this application server is legal through the MAC Address administration module; And resource management module judges whether storage resources is enough, and according to judged result distributing IP address and storage resources or return error message.Judgement through MAC Address administration module and resource management module; Confirm that this application server is legal; And this storage system has enough storage resources; Then storage system marks off corresponding memory space and is this application server distributing IP address for this application server, is corresponding memory space name according to giving the application server IP address allocated simultaneously.
In this specific embodiment; The MAC information that storage system adopts application server is as the information of judging that this application server is whether legal; Adopt the MAC Address administration module as judge module; Simultaneously storage system also can adopt other hardware identifiers such as CPU sequence number as the information of judging that this application server is whether legal, so the MAC Address administration module of this specific embodiment can be substituted by other hardware sign administration modules.
Simultaneously, in this specific embodiment, storage system is the resource space name that marks off according to the IP address of distributing to application server; Wherein, Storage system also can be the resource space name that marks off according to other hardware beacon information of application server, such as MAC, and CPU sequence number or the like.
The ISCSI link block of this application server comprises that further the ISCSI initiator names the unit; Application server obtains after the dynamic IP addressing; Then this ISCSI initiator names the unit to run after fame with the IP address that obtains to be called this application server name as the ISCSI sponsor party name; And launch ISCSI initiator function, the ISCSI link block of this application server is set up ISCSI with storage system automatically and is connected then; After storage system is received the ISCSI connection request; Use whether the ISCSI processing module is the dhcp client of own distributing IP address through this application server of Name check; Wherein, The ISCSI processing module is connected between the processor and ISCSI link block of storage system, and distributes the respective stored resource or refuse this ISCSI connection request according to judged result.After application server and storage system are set up ISCSI and be connected, can carry out normal reading and writing data to this storage resources.
In this specific embodiment, storage system and application server adopt the agreement of DHCP agreement as dynamic assignment IP address, in other embodiments, also can adopt the agreement of other agreements such as BOOTP as dynamic assignment IP address.
The required storage resources amount of client also can be informed storage system through other protocol interactions, thus let storage system customizes be the different client side Resources allocation.
What need statement is that foregoing invention content and embodiment are intended to prove the practical application of technical scheme provided by the present invention, should not be construed as the qualification to protection range of the present invention.Those skilled in the art are in spirit of the present invention and principle, when doing various modifications, being equal to replacement or improvement.Protection scope of the present invention is as the criterion with appended claims.
Claims (14)
1. the distribution method of a storage resources; It is characterized in that; This method comprises, on storage system, launches Dynamic Host Configuration Protocol server end function, on client, launches the dhcp client function; After client and storage system are set up physical connection, send the dynamic assignment request of IP address to this storage system based on DHCP; This method also comprises:
A. storage system is client distributing IP address automatically;
B. client initiates to set up the ISCSI connection from the trend storage system after obtaining the IP address, to obtain storage resources.
2. the distribution method of storage resources as claimed in claim 1 is characterized in that, said steps A is based on that the agreement of dynamic assignment IP address accomplishes.
3. the distribution method of storage resources as claimed in claim 2; It is characterized in that, before said steps A, comprise that storage system judges the step that this client file a request is whether legal; If this client is legal then to be its distributing IP address; Divide resource, the information according to this client is the resource name of being divided simultaneously, if not rule is returned error message to client.
4. the distribution method of storage resources as claimed in claim 2; It is characterized in that; Before said steps A, comprise also storage system judges whether self has the step of enough storage resources, then be this client distributing IP address divide resource if this storage system has enough storage resources; Information according to this client is the resource name of being divided simultaneously, if not rule is returned error message to client.
5. the distribution method of storage resources as claimed in claim 3 is characterized in that, judges that in storage system whether legal in this client file a request step storage system judges according to the hardware identifier of this client whether it is legal.
6. the distribution method of storage resources as claimed in claim 5 is characterized in that, the hardware identifier of said client is a MAC information.
7. the distribution method of storage resources as claimed in claim 1 is characterized in that, said step B further comprises:
B1. judge through the ISCSI sponsor party name whether this client is legal,, then between client and storage system, set up ISCSI and connect if legal, if illegal, execution in step B2;
B2. refusing this ISCSI connects.
8. the distribution method of storage resources as claimed in claim 7 is characterized in that, in step B, client is ISCSI initiator name with the IP address that obtains.
9. client that links to each other with storage system; It is characterized in that; This client comprises dynamic IP addressing request module and ISCSI link block; Said dynamic IP addressing request module is used for after client and storage system are set up physical connection, initiating the dynamic IP addressing request for allocation through the dhcp client function to said storage system; Said ISCSI link block is initiated the ISCSI connection request to said storage system automatically after said storage system is returned the IP address.
10. the client that links to each other with storage system as claimed in claim 9; It is characterized in that; This ISCSI link block further is included as the name unit of ISCSI initiator name; Said name unit is ISCSI initiator name according to the IP address that obtains after receiving the IP address that said storage system returns.
11. storage system that links to each other with the described client of claim 9; It is characterized in that; Said storage system comprises the dynamic IP addressing distribution module; Launch Dynamic Host Configuration Protocol server end function on this dynamic IP addressing distribution module, receive and handle dynamic IP addressing request for allocation, distribute dynamic IP addressing to said client from said client.
12. storage system as claimed in claim 11; It is characterized in that; Said storage system further comprises MAC Address administration module and resource management module; Whether the MAC Address in the dynamic IP addressing request for allocation that said MAC Address administration module inspection is received is legal, and said resource management module checks whether said storage system exists the storage resources that meets the demands, and said MAC Address administration module and resource management module all return to said dynamic IP addressing distribution module with judged result.
13. storage system as claimed in claim 12 is characterized in that, after said dynamic IP addressing distribution module is obtained said judged result; To qualified request; Storage resources is divided in the distributing IP address, and names for the storage resources of dividing according to the information of this client; To ineligible request, return failure information.
14. storage system as claimed in claim 11 is characterized in that, said storage system further comprises the ISCSI processing module; Receive the ISCSI connection request of said client; Judge according to the sponsor party name of said client whether said client is legal, as be legal that then response connects; As be illegal, then refusal connects.
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| CN101179531B (en) * | 2007-12-07 | 2012-01-11 | 腾讯科技（深圳）有限公司 | Client terminal configuring method and communication system |
| CN102045297A (en) * | 2009-10-22 | 2011-05-04 | 阿尔卡特朗讯公司 | Method and equipment for performing strategic management on application server in network |
| DE112013007296T5 (en) * | 2013-09-27 | 2016-04-21 | Intel Corporation | Determining a suitable target for an initiator by a controller-level processor |
| CN104133776B (en) * | 2014-07-14 | 2017-07-14 | 华为技术有限公司 | Storage array automatic configuration method, device and storage system |
| CA2918549C (en) * | 2014-08-13 | 2018-05-01 | Huawei Technologies Co., Ltd. | Storage system, method, and apparatus for processing operation request |
| CN107423243B (en) * | 2017-04-18 | 2020-09-15 | 深圳市有芯半导体技术有限公司 | Method for preventing CPU from being hung up |
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| CN1805342A (en) * | 2005-01-10 | 2006-07-19 | 华为技术有限公司 | Method for obtaining IP address of multimedia device and multimedia device |
| CN1809056A (en) * | 2005-01-18 | 2006-07-26 | 英业达股份有限公司 | Storage device access control system and method based on iSCSI |
| CN1909478A (en) * | 2006-08-29 | 2007-02-07 | 乌永胜 | Method for realizing management of multiple disks storage array through exchange or management server |
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| CN1805342A (en) * | 2005-01-10 | 2006-07-19 | 华为技术有限公司 | Method for obtaining IP address of multimedia device and multimedia device |
| CN1809056A (en) * | 2005-01-18 | 2006-07-26 | 英业达股份有限公司 | Storage device access control system and method based on iSCSI |
| CN1753406A (en) * | 2005-10-26 | 2006-03-29 | 华中科技大学 | IP storage control method based on iSCSI protocol and apparatus thereof |
| CN1909478A (en) * | 2006-08-29 | 2007-02-07 | 乌永胜 | Method for realizing management of multiple disks storage array through exchange or management server |
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