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Controlling computer storage systems

  • US 8,185,779 B2
  • Filed: 05/30/2008
  • Issued: 05/22/2012
  • Est. Priority Date: 06/27/2006
  • Status: Active Grant
First Claim
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1. A method for controlling a computer storage system, comprising the steps of:

  • obtaining deterministic component availability information pertaining to said system;

    obtaining probabilistic component availability information pertaining to said system;

    checking for violation of availability goals based on both said deterministic component availability information and said probabilistic component availability information;

    determining replication parameters, responsive to said checking indicating a violation of said availability goals; and

    placing a set of storage volumes on a set of storage controllers, wherein said placement satisfies said availability goals, said placing comprising;

    determining an initial placement of said storage volumes on said storage controllers based on capacity and performance goals; and

    replicating said storage volumes, responsive to said availability goals.

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