Disk array system having adjustable parity group sizes based on

Details Disk array system having adjustable parity group sizes based on Disk array system having adjustable parity group sizes based on

1996-02-29

1998-05-19

Beausoliel, Jr., Robert W.

395441, 39549701, G06F 1100

Patent

active

057547564

ABSTRACT:
The capacity efficiency of a disk array, when this disk array is constructed of drives of different capacities, is managed with a table so that areas of larger capacity disk drives of the disk array that would otherwise be left unused can be used for parity group storage. In this regard, at least one parity group can be constructed of a size based on the disk drive unit of the array having the least capacity. And, at least one other parity group can be formed of the remaining area in the disk drive units having a capacity that is greater than the disk drive unit having the least capacity that is of a size based on the remaining area of the disk drive unit having the next least capacity of the disk array.

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"Mixed Drive Capacities and Vendors", DAC960 of Mylex Corporation.

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