Disk array subsystem

Details Disk array subsystem Disk array subsystem

2008-06-03

2008-06-03

Bonzo, Bryce P (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S006130, C714S006130

Reexamination Certificate

active

07383472

ABSTRACT:
A disk array subsystem makes a diagnosis of a memory device while maintaining performance of a normal access to the memory device contained in a controller, thus enhancing reliability of the memory data. In the disk array subsystem having a disk drive and a controller, the controller has a cache unit and the cache unit has a memory device and a memory control unit. The memory control unit monitors status of memory access by means of a memory access state monitoring unit, issues a diagnosis request while normal access is not made to the memory device, makes access to the memory device for diagnosis of the memory data, and checks the data read from the memory device by using ECC and detects a data error.

REFERENCES:
patent: 5627990 (1997-05-01), Cord et al.
patent: 6223309 (2001-04-01), Dixon et al.
patent: 6848063 (2005-01-01), Rodeheffer et al.
patent: 2002/0013881 (2002-01-01), Delp et al.
patent: 2002/0065984 (2002-05-01), Thompson et al.
patent: 2003/0097608 (2003-05-01), Rodeheffer et al.
patent: 2005/0058008 (2005-03-01), Auclair et al.
patent: 2005/0080988 (2005-04-01), Teng
patent: 2005/0081085 (2005-04-01), Ellis et al.
patent: 2005/0120268 (2005-06-01), Barr et al.
patent: 2005/0188009 (2005-08-01), McKinney et al.
patent: 08-212145 (1995-02-01), None

Affiliated with

Also associated with

Rating

Disk array subsystem does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Disk array subsystem, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disk array subsystem will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2801895