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System and method for implementing volume sets in a storage system

  • US 7,424,592 B1
  • Filed: 07/30/2004
  • Issued: 09/09/2008
  • Est. Priority Date: 07/30/2004
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a volume server;

    a first and a second client computer system; and

    a plurality of physical block devices;

    wherein the volume server is configured to;

    aggregate storage in the plurality of physical block devices into a plurality of logical volumes, wherein a given logical volume includes storage from at least two physical block devices;

    distribute a first subset including at least two of said plurality of logical volumes to said first and second client computer systems for input/output as a first volume set configured to be accessed as a single logical device;

    wherein said first volume set comprises a plurality of independent logical block address spaces corresponding respectively to members of said first subset of logical volumes, and wherein said first volume set is configured such that modification of a configuration of a given one of said independent logical block address spaces occurs without perturbing configurations of other ones of said independent logical block address spaces.

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