Handling of data transfer in a LAN-free environment

• US 9,122,640 B2
• Filed: 05/24/2012
• Issued: 09/01/2015
• Est. Priority Date: 12/18/2009
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Lentini, Alain, Theuwissen, Jarl
• Primary Examiner(s): Phung, Luat
• Assistant Examiner(s): ALI, SYED
• Application Number:
  US13/480,198
• Publication Number:
  US 20120233292A1
• Time in Patent Office: 1,195 Days
• Field of Search: 709/217, 709/203
• US Class Current: 1/1
• CPC Class Codes: G06F 11/1456 Hardware arrangements for backup
• CPC Class Codes: G06F 2201/815 Virtual middleware or OS functionality using virtual machines to implement generic software techniques for error detection or fault masking G06F11/1484
• 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 Fiber Channel protocol. The converted data is sent to a Storage Area Network (SAN) through a Fiber Channel card and finally to a tape library. An advantage is thus to mutualize and virtualize resources, in particular Fiber 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 method of handling data transfer, the method 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, wherein the at least one client partition is configured to move dynamically between servers via live partition mobility (LPM), and wherein the at least one client partition is moved from the first server to a second server.

2. The method 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 method of claim 2, wherein the converting is performed by the LAN-SAN API, the API acting as a gateway.

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

5. The method 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.

6. The method of claim 5, wherein in LPM, virtual devices that manage access to SAN disks are copied from a source partition to a destination partition.