System and method for rotational position sensing miss avoidance

Details System and method for rotational position sensing miss avoidance System and method for rotational position sensing miss avoidance

1992-05-18

1999-04-13

Robertson, David L.

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

G06F 1300

Patent

active

058939180

ABSTRACT:
A method for operating a controller for a plurality of direct access storage devices to minimize rotational misses during data transfer operations. Transferred data is staged into a controller cache when a rotational position sensing miss avoidance reconnection is made. Circumstances are detailed for qualifying an operation pending on direct access storage devices for treatment as miss avoidance candidates. Adjustment of controller response depending upon foreknowledge that a channel command word chain includes a write operation is also accomplished utilizing the present method.

REFERENCES:
patent: 4583166 (1986-04-01), Hartung et al.
patent: 5146576 (1992-09-01), Beardley et al.

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