On-line scanning and maintenance of a disk drive array

Details On-line scanning and maintenance of a disk drive array On-line scanning and maintenance of a disk drive array

1997-06-03

1999-09-28

Hua, Ly V.

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

714 6, 711100, 711114, G06F 1326

Patent

active

059580666

ABSTRACT:
A method and apparatus provide for maintenance and on-line scanning of the mass storage elements of a computer system without taking those elements off-line. Maintenance commands are sent to the disk drive elements during those time intervals when they are less busy with commands from the host computer(s). In a special instance, a SCSI code load update command can be implemented and forwarded to one or more disk drives connected over a SCSI bus to a disk drive controller. The disk drive controller returns busy signals to any incoming read operations. In a particular instance where there are mirrored drives, read operations can be redirected to a mirrored drive which is not being updated. The host computer system provides substantially no change in throughput performance as the maintenance operations occur.

REFERENCES:
patent: 5191649 (1993-03-01), Cadambi et al.
patent: 5537566 (1996-07-01), Konno et al.
patent: 5680539 (1997-10-01), Jones

Affiliated with

Also associated with

Rating

On-line scanning and maintenance of a disk drive array does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with On-line scanning and maintenance of a disk drive array, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On-line scanning and maintenance of a disk drive array will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-697950