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Preserving cache data against cluster reboot

  • US 7,139,933 B2
  • Filed: 06/20/2003
  • Issued: 11/21/2006
  • Est. Priority Date: 06/20/2003
  • Status: Expired due to Fees
First Claim
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1. A method for safeguarding data in a multi-cluster storage server, comprising:

  • maintaining respective data structures that describe data stored in respective caches of the clusters;

    wherein for each cluster, the data is provided in a plurality of track images of the respective cache, and the respective data structures include track control blocks that describe the data in the track images; and

    following a failure of one of the clusters, using the track control blocks of the surviving cluster to rebuild the data structures for the respective cache of the surviving cluster.

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