Method and means for encoding and rebuilding the data contents o

Details Method and means for encoding and rebuilding the data contents o Method and means for encoding and rebuilding the data contents o

1995-08-24

1996-11-26

Beausoliel, Jr., Robert W.

Excavating

371 401, 371 493, G06F 1134

Patent

active

055794750

ABSTRACT:
The data contents of up to two concurrently failed or erased DASDs can be reconstituted where the data is distributed across M DASDs as an (M-1)*M block array and where (1) the (M-1)st DASD contains the simple parity taken over each of the array diagonals in diagonal major order in the same mode (odd/even) as that exhibited by the major diagonal of the array and (2) where the M-th DASD contains the simple even parity over each of the rows in row major order. Relatedly, short write updates require fewer operations for data blocks located off the major data array diagonal.

REFERENCES:
patent: 3685016 (1972-08-01), Eachus
patent: 4092732 (1978-05-01), Ouchi
patent: 4201976 (1980-06-01), Patel
patent: 4775978 (1988-10-01), Hartness
patent: 4914656 (1990-04-01), Dunphy et al.
patent: 5130992 (1992-07-01), Prey, Jr. et al.
patent: 5271012 (1993-12-01), Blaum et al.
"A Case For Redundant Arrays of Inexpensive Disks (RAID)" Report No. UCB/CSD 87/391, Dec. 1987 Computer Science Division U. of California, Berkeley.

Affiliated with

Also associated with

Rating

Method and means for encoding and rebuilding the data contents o does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and means for encoding and rebuilding the data contents o, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and means for encoding and rebuilding the data contents o will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1980467