High performance disk array rebuild

Details High performance disk array rebuild High performance disk array rebuild

2011-06-28

2011-06-28

Elmore, Stephen C (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S156000, C711S158000, C711S170000, C714S006130, C714S025000

Reexamination Certificate

active

07970994

ABSTRACT:
A method, information processing system, and computer program storage product for managing disk failures in a disk array. At least one disk in a first disk array is determined to have failed. The first disk array only accesses data by reading an entire stripe that is distributed across multiple disks in the first disk array. A number of spare disks are selected that is equal to a number of disks making up the first disk. A second disk array is created from the number of disks that has been selected. Data is acquired from the first disk array by reading at least one entire stripe from the first disk array. A corresponding stripe comprising the data from each respective stripe that has been acquired is written to the second disk array.

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