Patent
1997-02-24
1999-01-19
Luu, Le Hein
395878, 39518204, G06F 1108, G06F 1114
Patent
active
058624066
ABSTRACT:
A recording device which improves a response time to write data by reporting to a host computer the completion of writing operation prior to the completion of writing redundancy data. Data writing command information from the host computer is stored in a command/status memory backed up by a power source in an array controller, and the completion of writing operation is reported to the host computer at the time of the completion of writing updated data prior to the completion of writing redundancy data. Redundancy data is written as a background process. If redundancy data could not be written due to any abnormality of the power source or the like, such redundancy data may be generated from the data in other disk units of the same redundancy group in accordance with writing command information stored in the command/status memory, thereby completing the writing of redundancy data.
REFERENCES:
patent: 4761785 (1988-08-01), Clark et al.
patent: 4916605 (1990-04-01), Beardsley et al.
patent: 5101492 (1992-03-01), Schultz et al.
patent: 5127088 (1992-06-01), Takaki
patent: 5134619 (1992-07-01), Henson et al.
patent: 5148432 (1992-09-01), Gordon et al.
patent: 5210860 (1993-05-01), Pfeffer et al.
patent: 5233618 (1993-08-01), Glider et al.
patent: 5235601 (1993-08-01), Stallmo et al.
patent: 5249279 (1993-09-01), Schmenk et al.
patent: 5271012 (1993-12-01), Blaum et al.
David A. Patterson, et al "A Case for Redundant Arrays of Inexpensive Disks (RAID)" Computer Science Division, University of California, Dec. 1987.
Patent Abstracts of Japan, vol. 11, No. 292, Inventor: Yukito et al., Sep. 19, 1987, JP 62090068.
Baba Hiroshi
Matsumoto Toshio
Luu Le Hein
Mitsubishi Denki & Kabushiki Kaisha
LandOfFree
Array recording system reporting completion of writing data oper does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Array recording system reporting completion of writing data oper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Array recording system reporting completion of writing data oper will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1255170