Handling of data transfer in a LAN-free environment

• US 8,639,769 B2
• Filed: 12/15/2010
• Issued: 01/28/2014
• Est. Priority Date: 12/18/2009
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Theuwissen, Jarl, Lentini, Alain
• Primary Examiner(s): Nawaz, Asad
• Assistant Examiner(s): ALI, SYED
• Application Number:
  US12/969,329
• Publication Number:
  US 20110153730A1
• Time in Patent Office: 1,140 Days
• Field of Search: 709/203, 709/213, 714/4, 714/5, 714/6
• US Class Current: 709/213
• CPC Class Codes: G06F 11/1456 Hardware arrangements for backup
• CPC Class Codes: G06F 2201/815 Virtual
• CPC Class Codes: H04L 67/1097 for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]

Abstract

There is disclosed a method, system and computer readable medium for transferring data in a LAN-free environment, in particular for a tape backup or restore operation. Data of a client partition of a first server is sent to a partition of a LAN-free server through the Local Area Network (LAN). The data sent is then converted from TCP/IP protocol to Fibre Channel protocol. The converted data is sent to a Storage Area Network (SAN) through a Fibre Channel card and finally to a tape library. An advantage is thus to mutualize and virtualize resources, in particular Fibre Channel cards. Storage Area Network tape drives are shared using such host bus adapter cards. Certain embodiments avoid the reconfiguration of Storage Area Network tape drives when the client partition moves to a new hardware.

Claims

1. A system for handling data transfer, the system comprising:

a first server; and

a LAN-free server coupled to the first server, wherein the system performs operations, the operations comprising;

sending data from the at least one client partition of the first server to at least one partition of the LAN-free server through a Local Area Network (LAN) on TCP/IP protocol, wherein the sending comprises;

transmitting the data from a first virtual adapter through a virtual LAN to a second virtual adapter; and

transmitting, by the second virtual adapter, the data to a LAN-free storage agent comprising a LAN-SAN Application Programming Interface (API);

converting the sent data from the TCP/IP protocol into Fibre Channel protocol; and

sending the converted data to a tape library of a Storage Area Network (SAN) through at least one Fibre Channel card, wherein SAN tape sharing is performed between client partitions via virtualization by sharing Fibre Channel cards coupled to the SAN which is coupled to the tape library, wherein no Fibre Channel cards are installed on each of the client partitions, wherein the virtual LAN has same attributes as a physical LAN but defines a logical grouping of networking devices, and wherein the at least one client partition is configured to move dynamically between servers via live partition mobility (LPM).

2. The system of claim 1, wherein the data transfer is performed in a LAN-free environment, and wherein the LAN-free environment comprises:

the SAN having at least one tape library;

the LAN-free server having the at least one partition; and

the first server having the at least one client partition, wherein the LAN-free server further has the at least one Fibre Channel card shared with the at least one client partition.

3. The system of claim 2, wherein the converting is performed by the LAN-SAN Application Programming Interface (API), the API acting as a gateway.

4. The system of claim 2, wherein the LAN-free environment further comprises a backup server coupled to the client partition, and wherein the backup server initiates the data transfer.

5. The system of claim 2, the operations further comprising:

moving the at least one client partition from the first server to a second server.

6. The system of claim 1, wherein in LPM, network or devices reconfiguration is avoided via direct linkage of the at least one client partition to a common internet protocol (IP) address of the LAN-free server.

7. The system of claim 6, wherein in LPM, virtual devices that manage access to SAN disks are copied from a source partition to a destination partition.

8. A non-transitory computer readable medium for handling data transfer having encoded thereon a computer program, when said computer program is executed on a suitable computer to perform operations, the operations comprising:

sending data from at least one client partition of a first server to at least one partition of a LAN-free server through a Local Area Network (LAN) on TCP/IP protocol, wherein the sending comprises;

transmitting the data from a first virtual adapter through a virtual LAN to a second virtual adapter; and

transmitting, by the second virtual adapter, the data to a LAN-free storage agent comprising a LAN-SAN Application Programming Interface (API);

converting the sent data from the TCP/IP protocol into Fibre Channel protocol; and

sending the converted data to a tape library of a Storage Area Network (SAN) through at least one Fibre Channel card, wherein SAN tape sharing is performed between client partitions via virtualization by sharing Fibre Channel cards coupled to the SAN which is coupled to the tape library, wherein no Fibre Channel cards are installed on each of the client partitions, wherein the virtual LAN has same attributes as a physical LAN but defines a logical grouping of networking devices, and wherein the at least one client partition is configured to move dynamically between servers via live partition mobility (LPM).

9. The non-transitory computer readable medium of claim 8, wherein the data transfer is performed in a LAN-free environment, and wherein the LAN-free environment comprises:

the SAN having at least one tape library;

the LAN-free server having the at least one partition; and

the first server having the at least one client partition, wherein the LAN-free server further has the at least one Fibre Channel card shared with the at least one client partition.

10. The non-transitory computer readable medium of claim 9, wherein the converting is performed by the LAN-SAN Application Programming Interface (API), the API acting as a gateway.

11. The non-transitory computer readable medium of claim 9, wherein the LAN-free environment further comprises a backup server coupled to the client partition, and wherein the backup server initiates the data transfer.

12. The non-transitory computer readable medium of claim 9, the operations further comprising:

moving the at least one client partition from the first server to a second server.

13. The non-transitory computer readable medium of claim 8, wherein in LPM, network or devices reconfiguration is avoided via direct linkage of the at least one client partition to a common Internet Protocol (IP) address of the LAN-free server.

14. The non-transitory computer readable medium of claim 13, wherein in LPM, virtual devices that manage access to SAN disks are copied from a source partition to a destination partition.