DISK ARRAY DEVICE, OPERATING METHOD THEREOF AND PROGRAM-STORING MEDIUM
First Claim
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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Accused Products
Abstract
Even if failure probabilities are different for hard disks due to the individual specificity such as a hard disk manufacturer, model number or the like, a disk with high failure probability is reliably determined and removed from the operating RAID to be kept in a standby state as a hot spare disk, thereby keeping a low failure probability of the disk array device. In order to realize this, the disk array device includes a disk controlling unit for, based on S.M.A.R.T. information of each of the hard disks read by a S.M.A.R.T. information reading unit, 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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Citations
13 Claims
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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:
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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. - View Dependent Claims (2, 3, 4)
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5. 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:
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S.M.A.R.T. information reading means for reading S.M.A.R.T. information of each of the hard disks included in the disk array device; and disk controlling means 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 means, 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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6. An operating method of a disk array device including a plurality of hard disks composing a RAID and a predetermined number of hard disks each arranged as a hot spare disk, the operating method being characterized by comprising:
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a S.M.A.R.T. information reading step of reading S.M.A.R.T. information of each of the hard disks included in the disk array device; and a disk controlling step of, 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 step, assigning the predetermined number of hard disks to the hot spare disk in descending order of failure probability of the hard disks. - View Dependent Claims (7, 8, 9)
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10. A program-storing medium for storing an operating program of a disk array device including a plurality of hard disks composing a RAID and a predetermined number of hard disks each arranged as a hot spare disk, the program-storing medium being characterized by enabling a computer to execute:
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S.M.A.R.T. information reading processing for reading S.M.A.R.T. information of each of the hard disks included in the disk array device; and disk controlling processing for, based on the S.M.A.R.T. information of each of the hard disks read in the S.M.A.R.T. information reading processing, assigning a predetermined number of hard disks to the hot spare disk in descending order of failure probability of the hard disks. - View Dependent Claims (11, 12, 13)
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Specification