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Storage system and data restoration method thereof

  • US 20070174673A1
  • Filed: 03/06/2006
  • Published: 07/26/2007
  • Est. Priority Date: 01/25/2006
  • Status: Active Grant
First Claim
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1. A storage system including a first storage sub system having a first logical volume where a first data area is dynamically allocated to each prescribed area, and which stores data transmitted from a host computer in said first data area, and a second storage sub system having a second data area for backing up said first logical volume;

  • wherein said first storage sub system comprises;

    a first management unit for managing the status of said first data area allocated to each of said areas of said first logical volume;

    a transfer unit for transferring said data stored in said first data area allocated to each of said areas of said first logical volume to said second storage sub system; and

    a restoration unit for restoring said first logical volume based on the status of said first data area managed by said first management unit and/or said data transferred from said second storage sub system.

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