Disk array system and its control method

Details Disk array system and its control method Disk array system and its control method

2007-02-27

2007-02-27

Chung, Phung My (Department: 2138)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S718000, C714S006130

Reexamination Certificate

active

10388634

ABSTRACT:
In a disk array system of RAID (level5) improving the system performance by distributing data, duplicated fields are allocated in a parity group in order to reduce an overhead of data write. In the data write process, write data is tentatively and duplicately written in the duplicate fields. At this time, a write completion is reported to CPU. The parity is generated later at a proper timing and written in a SCSI drive. Generating a parity and writing data can be efficiently scheduled.

REFERENCES:
patent: 4870643 (1989-09-01), Bultman et al.
patent: 5124987 (1992-06-01), Milligan et al.
patent: 5155835 (1992-10-01), Belsan
patent: 5263145 (1993-11-01), Brady et al.
patent: 5274799 (1993-12-01), Brant et al.
patent: 5309451 (1994-05-01), Noya et al.
patent: 5392244 (1995-02-01), Jacobson et al.
patent: 5499337 (1996-03-01), Gordon
patent: 5655150 (1997-08-01), Matsumoto et al.
patent: 6049890 (2000-04-01), Kakuta et al.
patent: 6154854 (2000-11-01), Stallmo
patent: 6289471 (2001-09-01), Gordon
patent: 58-181162 (1983-10-01), None
patent: 63-157365 (1988-06-01), None
patent: 1-316041 (1989-12-01), None
patent: 4-127224 (1992-04-01), None
patent: 4-230512 (1992-08-01), None
patent: 04-279924 (1992-10-01), None
patent: 4-296926 (1992-10-01), None
patent: 4-312146 (1992-11-01), None
patent: 5-035413 (1993-02-01), None
patent: 5-54546 (1993-03-01), None
patent: 5-94224 (1993-04-01), None
patent: 5-100960 (1993-04-01), None
patent: 05-127837 (1993-05-01), None
patent: 5-19632 (1994-01-01), None
patent: 91/20076 (1991-12-01), None
patent: 92/12482 (1992-07-01), None
D. Patterson et al, “A Case for Redundant Arrays of Inexpensive Disks (RAID)”, in ACM SIGMOD Conference, Chicago, IL, Jun. 1988.
“Nikkei Watcher IBM Version”, Sep. 14, 1992, pp. 14-15.
“Hybrid Reducdancy [sic] Direct-Access Storage Device Array with Design Options”; IBM Technical Bulletin, vol. 37, No. 02B, Feb. 1994, pp. 141-148.
“Using Dual Actuator Shared Data Direct Access Storage Devices Drives in a Redundant Array”; IBM Technical Disclosure Bulletin, vol. 33, No. 8, Jan. 1991, pp. 270-272.

Affiliated with

Also associated with

Rating

Disk array system and its control method 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 system and its control method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disk array system and its control method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3881275