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Apparatus and method to maintain information in one or more virtual volume aggregates comprising a plurality of virtual volumes

  • US 20040044860A1
  • Filed: 08/29/2002
  • Published: 03/04/2004
  • Est. Priority Date: 08/29/2002
  • Status: Active Grant
First Claim
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1. A method for maintaining information in one or more virtual volume aggregates, comprising the steps of:

  • maintaining a plurality of virtual volumes in a first information storage medium;

    forming one or more virtual volume aggregates, wherein each of said plurality of virtual volumes is assigned to one of said one or more virtual volume aggregates;

    providing a plurality of second information storage media;

    identifying the least recently used virtual volume; and

    writing the virtual volume aggregate comprising said least recently used virtual volume to one or more second information storage media.

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