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DISK ARRAY DEVICE, OPERATING METHOD THEREOF AND PROGRAM-STORING MEDIUM

  • US 20080244309A1
  • Filed: 03/28/2008
  • Published: 10/02/2008
  • Est. Priority Date: 03/29/2007
  • Status: Active Grant
First Claim
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1. A disk array device characterized by including a plurality of hard disks composing a RAID and a predetermined number of hard disks each arranged as a hot spare disk, the disk array device being characterized by comprising:

  • a S.M.A.R.T. information reading part for reading S.M.A.R.T. information of each of the hard disks included in the disk array device; and

    a disk controller for, based on the S.M.A.R.T. information of each of the hard disks read by the S.M.A.R.T. information reading part, assigning a predetermined number of hard disks to the hot spare disk in descending order of failure probability of the hard disks.

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