Method and means for optimally accessing data residing on dual a

Details Method and means for optimally accessing data residing on dual a Method and means for optimally accessing data residing on dual a

1992-10-08

1994-08-23

Pascal, Robert J.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

360 7702, G11B 1722

Patent

active

053413512

ABSTRACT:
A method and means for ensuring maximal occupancy of dual actuators movable over a cyclic multitracked DASD in transferring any percentage mix of short and long records over a set of queued referencing commands by the selective serial or concurrent dispatching of actuators to the same or different records solely as a function of the ascertained actuator availability, reference queue length, and the length of the referenced record.

REFERENCES:
patent: 4430701 (1984-02-01), Christian et al.
patent: 4743995 (1988-05-01), Castle et al.
patent: 5177652 (1993-01-01), Yamaguchi et al.
patent: 5189578 (1993-02-01), Mori et al.
IBM Technical Disclosure Bulletin, vol. 33, No. 8, Jan. 1991, pp. 270-272.
UNIX Review, Oct. 1989, Section: vol. 7; No. 10; p. 153 announced Century Data Inc's. t2802 multichannel, parallel transfer data storage subsystem for use in graphics data-storage.

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