Apparatus, method and program for the control of storage

Details Apparatus, method and program for the control of storage Apparatus, method and program for the control of storage

2008-07-01

2008-07-01

Iqbal, Nadeem (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C711S114000

Reexamination Certificate

active

07395451

ABSTRACT:
A storage control apparatus is provided that comprises a failure monitoring unit arranged to add points in proportion to detected abnormality to find statistically added points for each of N disk devices, the failure monitoring unit issuing an instruction to re-create parity when the statistically added points come closer to a predefined failure determination point, the failure monitoring unit issuing an instruction to disconnect the failed disk device when the statistically added points exceed the failure determination point; and a parity re-creation unit arranged, when receiving the instruction to re-create parity from the failure monitoring unit, to read the plural pieces of user data from (N-1) disk devices to re-calculate parity data for write into the remaining one (1) disk device for each of all addresses of the plurality of disk devices.

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