System for scheduling read ahead operations if new request is se

Details System for scheduling read ahead operations if new request is se System for scheduling read ahead operations if new request is se

1995-11-21

1997-04-08

Lee, Thomas C.

395438, G06F 1314

Patent

active

056197233

ABSTRACT:
A disk drive array with a controller which provides: dynamic remapping for grown defects in the disk drives, multi-thread request processing with a variable number of forkings, defect tracking with both logical and physical lists, guarded writes of less than a full stripe optimized by selectably using the redundancy to limit the number of sectors involved, association of multiple operations with a single disk request in order to facilitate error handling, use of an access hiatus as indication of further opportunity to rebuild data in background, and scatter/scatter (bidirectional scatter/gather) operations.

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