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Migrating data in a storage system

  • US 20060242379A1
  • Filed: 04/20/2005
  • Published: 10/26/2006
  • Est. Priority Date: 04/20/2005
  • Status: Active Grant
First Claim
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1. A method of migrating client data comprising:

  • dividing a plurality of disks into disk group subsets;

    configuring an individual disk group as a self-contained domain from which virtualized disks are allocated and presented as logical units to the client;

    writing to the disk group metadata information including mapping information and state information that self-identifies state of the disk group;

    dismounting the disk group from a first array;

    physically moving the disk group from the first array to a second array;

    mounting the disk group to the second array including reading the disk group metadata, enabling a disk controller to load and present the virtualized disks corresponding to the disk group as logical units to a client; and

    accessing the disk group from the second array.

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