Automatic system for prioritized selection of a magnetic tape de

Details Automatic system for prioritized selection of a magnetic tape de Automatic system for prioritized selection of a magnetic tape de

1983-07-20

1988-09-06

Zache, Raulfe B.

Boots, shoes, and leggings

G06F 1200

Patent

active

047697822

ABSTRACT:
A data processing system in which, when a magnetic tape device is required for execution of a job, a group of magnetic tape devices is designated and an appropriate one of the magnetic tape devices in the designated group is selected and allocated to the job. In order to start the execution of the job as early as possible, status data indicating whether a magnetic tape is loaded in a device and is being rewound or not is read, and one of the magnetic tape devices in the designated group, which is not loaded with a magnetic tape, is selected to have a top priority. In the absence of such a device, a magnetic tape device loaded with a magnetic tape which is not being rewound is selected in preference to the others.

REFERENCES:
patent: 4310883 (1982-01-01), Clifton et al.
patent: 4410942 (1983-10-01), Milligan
patent: 4413328 (1983-11-01), Videki
patent: 4428064 (1984-01-01), Hempy
"IBM Reference Manual, 7070 Data Processing System" Aug. 1960, pp. 94, 95, 286.

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