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Virtual array failover

  • US 20070283186A1
  • Filed: 12/27/2005
  • Published: 12/06/2007
  • Est. Priority Date: 12/27/2005
  • Status: Active Grant
First Claim
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1. Apparatus for use in a storage system comprising a fabric having a database that associates Fibre Channel names and Fibre Channel addresses of Fibre Channel ports coupled to it, the apparatus comprising:

  • a plurality of groups of logical units of storage;

    at least one physical port coupled to the groups through which the groups can be coupled to a fabric;

    each group assigned a unique virtual port address for each physical port to which it is coupled;

    a first said group comprising a primary virtual array, the primary virtual array having at least one primary virtual port coupled to the fabric, each primary virtual port having a primary virtual port name and a primary virtual port address;

    a second said group comprising a secondary virtual array, the secondary virtual array having one or more secondary virtual ports coupled to the fabric, each secondary virtual port having a secondary virtual port name and a secondary virtual port address;

    logic for copying all data resident on the primary virtual array to the secondary virtual array;

    logic responsive to a failure for;

    replacing the secondary virtual port names with the primary virtual port names;

    causing the fabric to update its name server database so that the database associates the primary virtual port names with the secondary virtual port addresses.

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