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Data storage system using 3-party hand-off protocol to facilitate failure recovery

  • US 20030229826A1
  • Filed: 06/10/2002
  • Published: 12/11/2003
  • Est. Priority Date: 06/10/2002
  • Status: Active Grant
First Claim
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1. A data storage system comprising:

  • a first type processing module for partially executing a first group of data storage operations;

    a second type processing module for partially executing a second group of data storage operations; and

    a third type processing module for partially executing a third group of data storage operations, wherein at least two of said first, second, and third type processing modules are required to cooperate in a hand-off manner to fully execute any one of said data storage operations, and wherein if an abnormal state arises when attempting to fully execute a particular data storage operation, a particular module of said first, second, and third type processing modules involved in executing said particular data storage operation detects said abnormal state and proceeds to recover from said abnormal state.

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