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Apparatus and method for differential backup and restoration of data in a computer storage system

  • US 6,397,308 B1
  • Filed: 12/31/1998
  • Issued: 05/28/2002
  • Est. Priority Date: 12/31/1998
  • Status: Expired due to Term
First Claim
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1. A method of generating a backup for a logical object, comprising steps of:

  • identifying data blocks of the logical object that have changed since an earlier point in time; and

    storing the changed data blocks as a differential abstract block set.

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