Method of fault handling for a disk control unit with built-in c

Details Method of fault handling for a disk control unit with built-in c Method of fault handling for a disk control unit with built-in c

1990-11-20

1995-02-14

Beausoliel, Jr., Robert W.

Excavating

3642453, 3642685, 36496434, 364969, G06F 1100, G06F 100

Patent

active

053901860

ABSTRACT:
In order for a disk control unit with built-in cache to write non-reflective data in the cache to a disk drive without stopping extension of a read/write command from host computer in the event of a fault in the cache or its backup memory, the track data in normal one of the cache and its backup memory is written to a certain physical track of the disk drive upon judging at read/write command execution that the accessed track is a non-reflective track, and a read/write command from the host computer is implemented for the physical track of the disk drive which has completed the non-reflective track write operation.

REFERENCES:
patent: 3896419 (1975-07-01), Lange et al.
patent: 4044337 (1977-08-01), Hicks et al.
patent: 4357656 (1982-11-01), Saltz et al.
patent: 4819154 (1989-04-01), Stiffler et al.
patent: 5124987 (1992-06-01), Milligan et al.
patent: 5201041 (1993-04-01), Bohner et al.

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