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Raid rebuild using most vulnerable data redundancy scheme first

  • US 6,516,425 B1
  • Filed: 10/29/1999
  • Issued: 02/04/2003
  • Est. Priority Date: 10/29/1999
  • Status: Expired due to Term
First Claim
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1. A method of managing data in a hierarchical data storage system employing data redundancy schemes, the method comprising:

  • in response to a storage device failure in the data storage system, controlling a data rebuild based on a most vulnerable data redundancy scheme in the storage system, wherein the most vulnerable data redundancy scheme is defined as a data redundancy scheme having a highest probability of losing data that can be prevented by a rebuild with respect to the potential for one or more next storage device failures in the data storage system.

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