Pre-fetch prediction method for disk drives

Details Pre-fetch prediction method for disk drives Pre-fetch prediction method for disk drives

2007-12-25

2007-12-25

Sparks, Donald (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S112000, C711S113000, C712S207000

Reexamination Certificate

active

11023000

ABSTRACT:
A pre-fetch method for a data storage system having disk drives and a cache memory. The method generates a history as pages are from the disk drives for storage in the cache memory, such history indicating whether a page previous to the requested page is already in the cache memory. The history generation is used during subsequent requests to determine, when a page is again requested, the number of pages that are to be read from the disk drive into the cache memory, the number of pages to be read being determined from the generated history.

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