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US 2009/0290247 A1Published application
Abnormality determining apparatus
AssigneeFujitsu Limited
InventorsMikio Ito, Eisaku Takahashi, Hidejirou Daikokuya, Kazuhiko Ikeuchi, Hideo Takahashi, Yoshihito Konta, Norihide Kubota
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Abstract
In a RAID apparatus, an error determining processing unit determines whether an HDD is normal based on an error determining condition obtained from an amount of increase of NON MEDIUM ERROR COUNT and the number of accesses memorized on a control table, and detects the HDD with abnormal performance.
Claims12
An abnormality determining apparatus comprising:
- a counting unit that counts a number of errors not attributable to a recording medium provided in a storage device;
- and
- an abnormality determining unit that calculates an amount of increase of the number of errors based on results of counting by the counting unit and determines whether the storage device is abnormal based on the amount of increase of the number of errors.
An abnormality determining method comprising:
- counting a number of errors not attributable to a recording medium provided in a storage device and storing the number of errors in the storage device;
- and
- calculating an amount of increase of the number of errors based on results of counting of the number of errors stored in the storage device and determining whether the storage device is abnormal based on the amount of increase.
Dependencies are inferred from the claim text.