User selectable priority for disk array background operations

Details User selectable priority for disk array background operations User selectable priority for disk array background operations

1995-10-13

1998-10-13

Toplu, Lucien U.

395676, 395677, G06F 946

Patent

active

058225846

ABSTRACT:
A new and improved apparatus and method for rebuilding a replacement disk of a fault tolerant, mass storage drive array subsystem of a computer system. The method calls for a microprocessor to check a stripe for consistency. If the stripe is inconsistent, the microprocessor rebuilds a predetermined number of stripes. If the checked stripe is consistent, then the microprocessor checks a next stripe and repeats the above-described process. Because the drive array subsystem receives both system requests and rebuild requests, the present invention allows a user to select the drive array subsystem's priority in processing system requests versus rebuild requests, thereby allowing greater system access to the drive array subsystem during peak times of system requests.

REFERENCES:
patent: 5101492 (1992-03-01), Schultz
patent: 5313585 (1994-05-01), Jeffries et al.
patent: 5473761 (1995-12-01), Parks et al.
patent: 5517632 (1996-05-01), Matsumoto et al.
patent: 5537566 (1996-07-01), Konno et al.

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