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SYSTEM AND METHOD FOR REPLACING STORAGE DEVICES

  • US 20170102883A1
  • Filed: 10/13/2015
  • Published: 04/13/2017
  • Est. Priority Date: 10/13/2015
  • Status: Active Grant
First Claim
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1. A method of operating a redundant array of independent drives (RAID) storage system having a plurality of storage devices and a spare storage device, the method comprising:

  • a storage controller tracking input/output statistics for the storage devices;

    determining if a first storage device storing first data has been identified for replacement within the storage devices;

    in response to the first storage device having been identified for replacement, determining a first least written to data address space within the first storage device based on the input/output statistics; and

    copying first data contained in the first least written to data address space from the first storage device to the spare storage device.

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