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Pool spares for data storage virtualization subsystem

  • US 9,110,607 B2
  • Filed: 07/25/2014
  • Issued: 08/18/2015
  • Est. Priority Date: 10/11/2005
  • Status: Active Grant
First Claim
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1. A data storage virtualization subsystem for providing data storage space to a host entity, the data storage virtualization subsystem comprising:

  • a storage virtualization controller for connecting to the host entity;

    a plurality of normally-used physical storage devices electrically connecting to the storage virtualization controller for storing user data or associated redundant information, wherein one or more sections of the plurality of the normally-used physical storage devices is defined as a logical media unit, and at least one of the plurality of the normally-used physical storage devices is defined as a physical storage device pool according to a pool ID for identifying the physical storage device pool; and

    a pool spare physical storage device designated to the physical storage device pool for replacing one of the plurality of normally-used physical storage device,wherein if the pool spare physical storage device is available, when one of the plurality of normally-used physical storage devices is to be replaced, the pool spare physical storage device is selected as a spare physical storage device for replacing the one of the plurality of the normally-used physical storage devices in the physical storage device pool;

    wherein the physical storage device pool comprises an ID-storing device for storing the pool ID.

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