Cache DASD sequential staging and method

Details Cache DASD sequential staging and method Cache DASD sequential staging and method

1992-12-22

1995-06-20

Robertson, David L.

G06F 1316, G06F 1300

Patent

active

054267617

ABSTRACT:
A system for prestaging data into a cache to increase the speed data is received from a direct access storage drive (DASD) is utilized within a data processing system. This system utilizes multi-track read operations to prestage tracks into the cache. In so doing, the overhead associated with proceeding from one track to the next is reduced. The system allows for the prestaging of up to a cylinder of tracks per prestage. The prestaging system will also allow internally scheduled operations requiring a physical device to interrupt the prestaging if conditions require this action to maintain subsystem performance.

REFERENCES:
patent: 4603380 (1986-07-01), Easton et al.
patent: 4800483 (1989-01-01), Yamamoto et al.
patent: 4882642 (1989-11-01), Tayler et al.
patent: 5253351 (1993-12-01), Yamamoto et al.

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