Storage unit subsystem

Details Storage unit subsystem Storage unit subsystem

2008-01-15

2008-01-15

Iqbal, Nadeem (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

Reexamination Certificate

active

07320089

ABSTRACT:
When receiving a write request from a processor, a control unit checks the condition of existence (or the presence/absence) in a cache for information necessary for generation of an updated value of a parity record, receives write data and reports the completion of the write request to the processor. In asynchronism with the write request from the processor, the control unit performs a load process for that information among the information necessary for generation of the updated value of the parity record which may be prepared in asynchronism with the write request from the processor and a write after process for the updated value of the parity record.

REFERENCES:
patent: 4598357 (1986-07-01), Swenson et al.
patent: 4761785 (1988-08-01), Clark et al.
patent: 4814980 (1989-03-01), Peterson et al.
patent: 4916605 (1990-04-01), Beardsley et al.
patent: 4942579 (1990-07-01), Goodlander et al.
patent: 5140592 (1992-08-01), Idleman et al.
patent: 5208813 (1993-05-01), Stallmo
patent: 5210866 (1993-05-01), Milligan et al.
patent: 5233616 (1993-08-01), Callander
patent: 5235601 (1993-08-01), Stallmo et al.
patent: 5239659 (1993-08-01), Rudeseal et al.
patent: 5274799 (1993-12-01), Brant et al.
patent: 5390187 (1995-02-01), Stallmo
patent: 5490248 (1996-02-01), Dan et al.
patent: 5497457 (1996-03-01), Ford
patent: 5499337 (1996-03-01), Gordon
patent: 5515500 (1996-05-01), Mizuno et al.
patent: 5526482 (1996-06-01), Stallmo et al.
patent: 5596709 (1997-01-01), Bond et al.
patent: 5600816 (1997-02-01), Oldfield et al.
patent: 5613059 (1997-03-01), Stallmo et al.
patent: 5682396 (1997-10-01), Yamamoto et al.
patent: 5734812 (1998-03-01), Yamamoto et al.
patent: 5787460 (1998-07-01), Yashiro et al.
patent: 5826002 (1998-10-01), Yamamoto et al.
patent: 5911779 (1999-06-01), Stallmo et al.
patent: 5917999 (1999-06-01), Yamamoto et al.
patent: 5959860 (1999-09-01), Styczinski
patent: 5996046 (1999-11-01), Yagisawa et al.
patent: 6032263 (2000-02-01), Yamamoto et al.
patent: 6098191 (2000-08-01), Yamamoto et al.
patent: 6112255 (2000-08-01), Dunn et al.
patent: 6145091 (2000-11-01), Yamamoto et al.
patent: 6151641 (2000-11-01), Herbert
patent: 6209107 (2001-03-01), Yamamoto et al.
patent: 6327673 (2001-12-01), Yamamoto et al.
patent: 6473867 (2002-10-01), Yamamoto et al.
patent: 0369707 (1990-05-01), None
patent: 0458554 (1991-11-01), None
patent: 0462917 (1991-12-01), None
patent: 55157053 (1980-12-01), None
patent: 59135563 (1984-08-01), None
patent: 60114947 (1985-06-01), None
patent: 237418 (1990-02-01), None
patent: 337746 (1991-02-01), None
patent: 4-127224 (1992-04-01), None
patent: 5-509186 (1993-12-01), None
patent: 10-511193 (1998-10-01), None
patent: WO90/00280 (1990-01-01), None
F.D. Lawlor, “Efficient Mass Storage Parity Recovery Mechanism”, IBM Technical Disclosure Bulletin, US, IBM Corp., Jul. 1981, vol. 24, No. 2, pp. 986-987.
Patterson, David A. et al, A Case for Redundant Arrays of Inexpensive Disks (RAID), ACM SIGMOD Conference Proceedings, Chicago, Ill. Jun. 1-3, 1988, pp. 109-116.

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