Fault tolerant disk drive matrix

Details Fault tolerant disk drive matrix Fault tolerant disk drive matrix

1991-03-01

1994-04-12

Beausoliel, Jr., Robert W.

Excavating

395425, 395400, 395575, 365200, G06F 1100

Patent

active

053032446

ABSTRACT:
A fault tolerant disk drive matrix comprises a plurality of disk drives. A mapping method associates a subset of the disk drives with a logical RAID-5 array. Each of the disk drives in the matrix may be associated with a plurality of different logical RAID-5 arrays. Logical units of data are subdivided into blocks and stored in an interleaved manner across the disk drives of the logical RAID-5 array. The arrangement of data and parity blocks on the logical RAID-5 arrays within the matrix reduces throughput degradation when a disk drive fails. In the event of a disk drive failure, data blocks stored on the failed disk drive can be reconstructed using redundancy blocks and data blocks from the surviving disk drives within the logical RAID-5 array. Replacement disk drives may also be provided to substitute for the failed disk drive in the logical RAID-5 array. Thus, the mapping of logical RAID-5 arrays to physical disk drives in the matrix may change in position and identity due to disk drive replacements caused by failures.

REFERENCES:
patent: 4380066 (1983-04-01), Spencer et al.
patent: 4953122 (1990-08-01), Williams
patent: 4989205 (1991-01-01), Dunphy, Jr. et al.
patent: 5025418 (1991-06-01), Asoh
patent: 5088081 (1992-02-01), Farr
patent: 5124987 (1992-06-01), Milligan et al.
patent: 5146588 (1992-09-01), Crater et al.
patent: 5210866 (1993-05-01), Milligan et al.
Compcon Spring 89 "Digest of Papers" IEEE, New York, pp. 112-117.

Affiliated with

Also associated with

Rating

Fault tolerant disk drive matrix does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fault tolerant disk drive matrix, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fault tolerant disk drive matrix will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2105164