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SYSTEM AND METHOD FOR ALLOCATING CAPACITY

  • US 20120221783A1
  • Filed: 05/08/2012
  • Published: 08/30/2012
  • Est. Priority Date: 05/14/2008
  • Status: Active Grant
First Claim
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1. A method of allocating capacity in a storage system, the storage system including a controller and a plurality of flash packages connected to the controller, the method comprising:

  • creating a logical device provided to a host computer as a migration destination for migrating data in a migration source which is a logical device recognized by the host computer; and

    allocating to the created logical device, at least a first storage area with a first capacity and a second storage area with a second capacity from storage area provide by the flash packages, the first capacity being a capacity which the host recognizes, the second storage area being provided as a substitute area,wherein the allocating includes calculating the second capacity based on write access frequency for the migration source.

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