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Information processing system, primary storage device, and computer readable recording medium recorded thereon logical volume restoring program

  • US 20060149901A1
  • Filed: 05/11/2005
  • Published: 07/06/2006
  • Est. Priority Date: 01/05/2005
  • Status: Active Grant
First Claim
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1. An information processing system comprising:

  • a secondary storage device for retaining a recording medium configuring a virtual logical volume;

    a data processing apparatus for processing data recorded in the virtual logical volume of said secondary storage device;

    a primary storage device interposed between said secondary storage device and said data processing apparatus;

    said primary storage device comprising;

    at least two current storage units configuring a logical volume in which data read out from the virtual logical volume of said secondary storage device in order that said data processing apparatus has an access to the data to process the same is recorded, and being in a mirroring relationship;

    at least two spare storage units which can be used in the mirroring relationship; and

    a restoring unit for, when said at least two current storage units concurrently fail, reading out data recorded in the logical volume of said current storage units from the virtual logical volume of said secondary storage device, recording the data on said at least two spare storage units, thereby restoring, on said at least two spare storage units, the logical volume of said at least two current storage units.

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