Disk control unit for holding track data in cache memory

Details Disk control unit for holding track data in cache memory Disk control unit for holding track data in cache memory

1995-10-26

1999-12-28

Cabeca, John W.

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

711 3, 711 4, 711111, 711112, 711114, 711118, 711161, 711162, 711205, 711207, 711208, 711216, 714 6, 714 15, 714 18, 714 21, 371 4011, 371 402, 371 4014, 371 4015, 365 49, 365 50, 360 48, G06F 1216

Patent

active

060094982

ABSTRACT:
A cache memory holds data of a disk unit on a track unit basis. Recording format information of the track in each disk unit is held in an LTD. For a write request from an upper apparatus, in case of a hit of the cache memory, a write cache control unit finishes a writing process on the cache memory and reports an end of process to the upper apparatus. In case of a mishit of the cache memory, a recording format is analyzed with reference to the LTD and a record position on the track to be developed in the cache memory is recognized, the writing process is finished on the cache memory and an end of process is reported to the upper apparatus.

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