Disk drive allocating cache segments by mapping bits of a...

Details Disk drive allocating cache segments by mapping bits of a... Disk drive allocating cache segments by mapping bits of a...

2005-01-18

2005-01-18

Peugh, Brian R. (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S129000, C711S173000, C710S056000, C710S052000

Reexamination Certificate

active

06845427

ABSTRACT:
A disk drive is disclosed comprising a semiconductor memory comprising a cache buffer having a plurality of segment pools, each segment pool comprising a plurality of cache segments, and each cache segment comprises 2knumber of blocks where k is a predetermined integer for each segment pool. Host commands have a command size comprising a plurality of bits indicating a number of blocks of data associated with the host command. Each bit of the command size is mapped to a corresponding segment pool in order to allocate cache segments for the host commands.

REFERENCES:
patent: 5890211 (1999-03-01), Sokolov et al.
patent: 5966726 (1999-10-01), Sokolov
patent: 6336164 (2002-01-01), Gerdt et al.
patent: 6442661 (2002-08-01), Dreszer
patent: 6470423 (2002-10-01), Ho et al.
patent: 6473830 (2002-10-01), Li et al.
patent: 6704839 (2004-03-01), Butterworth et al.
patent: 6711635 (2004-03-01), Wang

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