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Data migration method using storage area network

  • US 6,976,103 B1
  • Filed: 08/23/2000
  • Issued: 12/13/2005
  • Est. Priority Date: 03/03/2000
  • Status: Expired due to Fees
First Claim
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1. A method of migrating data from a first storage system, which is connected to a switch by a first communication channel and receives read/write requests from a host computer connected to the switch by a second communication channel, to a second storage system, said method comprising the steps of:

  • connecting the second storage system to the switch by a third communication channel;

    assigning a logical identifier to the third communication channel connected to the second storage system;

    changing the logical identifier assigned to the third communication channel connected to the second storage system into another logical identifier previously assigned to the first communication channel connected to the first storage system; and

    writing, via the switch, data stored in the first storage system to the second storage system using said another logical identifier,wherein the logical identifier is a renumbered identifier of a physical identifier of the third communication channel and the another logical identifier is a renumbered identifier of a physical identifier of the first communication channel.

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