Methods and structure for improved storage system...

Details Methods and structure for improved storage system... Methods and structure for improved storage system...

2008-08-14

2011-11-22

Song, Jasmine (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S143000, C711S141000, C711SE12026

Reexamination Certificate

active

08065479

ABSTRACT:
Methods and associated structures for utilizing write-back cache management modes for local cache memory of disk drives coupled to a storage controller while maintaining data integrity of the data transferred to the local cache memories of affected disk drives. In one aspect hereof, a state machine model of managing cache blocks in a storage controller cache memory maintains blocks in the storage controller's cache memory in a new state until verification is sensed that the blocks have been successfully stored on the persistent storage media of the affected disk drives. Responsive to failure or other reset of the disk drive, the written cache blocks may be re-written from the copy maintained in the cache memory of the storage controller. In another aspect, an alternate controller's cache memory may also be used to mirror the cache blocks from the primary storage controller's cache memory as additional data integrity assurance.

REFERENCES:
patent: 5197144 (1993-03-01), Edenfield et al.
patent: 5371855 (1994-12-01), Idleman et al.
patent: 5761705 (1998-06-01), DeKoning et al.
patent: 5897655 (1999-04-01), Mallick
patent: 5937433 (1999-08-01), Lee et al.
patent: 6865642 (2005-03-01), Day et al.

Affiliated with

Also associated with

Rating

Methods and structure for improved storage system... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods and structure for improved storage system..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and structure for improved storage system... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4304315