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System and method for a failover protocol in storage area network controllers

  • US 7,406,039 B2
  • Filed: 02/26/2002
  • Issued: 07/29/2008
  • Est. Priority Date: 02/26/2002
  • Status: Expired due to Term
First Claim
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1. A method for selecting an alternate storage path between a server and a storage unit in a storage area network following the failure of an existing storage path, comprising the steps of:

  • building a table of available storage paths between the server and the storage unit;

    identifying a storage controller of the existing storage path, wherein the step of identifying a storage controller of the existing storage path comprises the step of identifying a logical association between ports and storage controllers of the storage area network, and wherein the table includes information regarding the logical association between ports and storage controllers of the storage area network; and

    selecting an alternate storage path that does not include the storage controller of the existing storage path.

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