Method of controlling hard disk cache to reduce power consumptio

Details Method of controlling hard disk cache to reduce power consumptio Method of controlling hard disk cache to reduce power consumptio

1997-04-24

1999-08-10

Cabeca, John W.

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

711158, 711163, 711151, 711118, 711135, 395737, 395733, 395652, G06F 1134

Patent

active

059374330

ABSTRACT:
A method of controlling a hard disk cache in a computer having a hard disk drive which is controlled by a write back mode disk cache that reduces the amount of hard disk access includes: initializing a disk cache control program loaded during the software booting by an operating system; determining whether insertion of a new cell in the disk cache is available if an interrupt is invoked responsive to a write request; writing data contained within all cache cells stored in the disk cache into the hard disk drive and inserting the new cell of the write request data into the disk cache if a new cache cell is not available. With this, restricting access to the hard disk drive is possible, which result in reducing power consumption of a hard disk drive motor. Further, losing of data in the cache is prevented when a sudden system power failure or reset occurs.

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