Speculative data streaming disk drive and system

Details Speculative data streaming disk drive and system Speculative data streaming disk drive and system

2007-06-12

2007-06-12

Tran, Denise (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S113000

Reexamination Certificate

active

10651478

ABSTRACT:
A disk drive capable of supporting speculative data transfers. Requested first data are read from the disk drive. Before the first data are read, a determination is made as to whether there are un-requested second data that are likely to be requested at a later time as part of a data stream. If so, then a determination is made as to whether the second data and the first data are stored in locations that are physically/logically proximate on the same disk. If the second data are close to the first data, then the second data are speculatively read and stored in a local disk cache. If a subsequent request comes to the disk drive for the second data, then the second data are quickly produced from the disk cache rather than being slowly read off the disk.

REFERENCES:
patent: 5765213 (1998-06-01), Ofer
patent: 6418510 (2002-07-01), Lamberts
patent: 6557079 (2003-04-01), Mason et al.
patent: 6891740 (2005-05-01), Williams
patent: 7000077 (2006-02-01), Grimsrud et al.
patent: 2002/0178326 (2002-11-01), Ohta et al.
patent: 2004/0260909 (2004-12-01), Lee et al.

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