Disk array apparatus, computer-readable recording medium...

Details Disk array apparatus, computer-readable recording medium... Disk array apparatus, computer-readable recording medium...

2011-04-12

2011-04-12

Iqbal, Nadeem (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

Reexamination Certificate

active

07925926

ABSTRACT:
A disk array apparatus has a plurality of disks constituting a mounted RAID group and controls access from an upper-level device to each of the disks. The disk array apparatus also has a performance information collector for collecting a piece of performance-related information of each of the disks, and a suspected disk detector for comparing the pieces of information collected for the disks by the performance information collector among disks constituting a single one of the RAID group and detecting a suspected disk suspected of being abnormal in performance based on a result of the comparison.

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Japanese Office Action dated Oct. 13, 2009 and issued in corresponding Japanese Patent Application 2007-255197.

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