Disk drive with adaptively segmented cache

Details Disk drive with adaptively segmented cache Disk drive with adaptively segmented cache

1997-06-25

1999-10-12

Bragdon, Reginald G.

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

711129, 711133, 711137, 711170, 711173, G06F 1208

Patent

active

059667265

ABSTRACT:
A disk drive has an intelligent interface for communicating with a host, a magnetic disk, and a cache. The cache is divisible into a number of segments, with each segment having a cache access type. The number of segments may be varied in practice of a method for adaptively segmenting the cache. The method comprises the steps of: (a) calculating a plurality of caching factors while processing commands from the host; and (b) regularly determining whether to change the number of segments wherein an increase of the number of segments is effected based on a weighed weighing of the plurality of caching factors.

REFERENCES:
patent: 5394531 (1995-02-01), Smith
patent: 5420998 (1995-05-01), Horning
patent: 5566315 (1996-10-01), Milillo et al.
patent: 5761717 (1998-06-01), Vishlitzky et al.

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