Recovery from errors in a redundant array of disk drives

Details Recovery from errors in a redundant array of disk drives Recovery from errors in a redundant array of disk drives

1996-01-11

2000-08-29

Canney, Vincent P.

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

G06F 1100

Patent

active

RE0368466

ABSTRACT:
Fault tolerance in a redundant array of disk drives is degraded when error conditions exist in the array. Several methods for rebuilding data of the array to remove the degradation are described. Data rebuilding for entire disk drives and partial data rebuilds of disk drives are described. All rebuild methods tend to reduce the negative affect of using array resources for the data rebuild. In one method rebuilding occurs during idle time of the array. In a second method rebuilding is interleaved between current data area accessing operations of the array at a rate which is inversely proportional to activity level of the array. In a third method, the data are rebuilt when a data area being accessed is a data area needing rebuilding.

REFERENCES:
patent: 4092732 (1978-05-01), Ouchi
patent: 4761785 (1988-08-01), Clark et al.
patent: 4775978 (1988-10-01), Hartness
patent: 4855907 (1989-08-01), Ferro et al.
patent: 4870643 (1989-09-01), Bultman et al.
patent: 5101492 (1992-03-01), Schultz et al.
patent: 5179704 (1993-01-01), Jibbe et al.
patent: 5195100 (1993-03-01), Katz et al.
patent: 5208813 (1993-05-01), Stallmo
Patterson et al. "A Case for Redundant Arrays of Inexpensive Disks(RAID)" ACM 1988 Mar. 1988 pp. 109-116.

Affiliated with

Also associated with

Rating

Recovery from errors in a redundant array of disk drives does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Recovery from errors in a redundant array of disk drives, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recovery from errors in a redundant array of disk drives will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1235577