Disk drive memory

Details Disk drive memory Disk drive memory

1990-01-11

1991-01-29

Atkinson, Charles E.

Excavating

371 111, 371 404, G06F 1120

Patent

active

049892061

ABSTRACT:
The disk drive memory of the present invention uses a large plurality of small form factor disk drives to implement an inexpensive, high performance, high reliability disk drive memory that emulates the format and capability of large form factor disk drives. The plurality of disk drives are switchably interconnectable to form parity groups of N+1 parallel connected disk drives to store data thereon. The N+1 disk drives are used to store the N segments of each data word plus a parity segment. In addition, a pool of backup disk drives is maintained to automatically substitute a replacement disk drive for a disk drive in a parity group that fails during operation.

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David A. Patterson, Peter Chen, Garth Gibson and Randy H. Katz, Introduction to Redundant Arrays of Inexpensive Disks (RAID), 1989 IEEE, pp. 112-117.

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