Data distribution utilizing a master disk unit for fetching and

Details Data distribution utilizing a master disk unit for fetching and Data distribution utilizing a master disk unit for fetching and

1994-12-12

1997-10-21

Swann, Tod R.

39542103, 395383, 395439, 395440, 395441, G06F 1212, G06F 938

Patent

active

056805748

ABSTRACT:
The control unit arbitrarily selects a disk unit among the disk units that are inactive when the control unit receives an input/output request involving either read or staging. For a write request, the control unit selects a master disk unit in the disk unit group for the immediate writing of data, and a disk unit other than the above-mentioned master disk is preferably selected to execute the read and staging unit. After writing is used to write the data into the other disk units after the write request execution is completed by writing to the master disk unit.

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patent: 4837680 (1989-06-01), Crockett et al.
patent: 4881169 (1989-11-01), Tanaka et al.
patent: 4882671 (1989-11-01), Graham et al.
patent: 4888691 (1989-12-01), George et al.
patent: 5155835 (1992-10-01), Belsan
patent: 5155845 (1992-10-01), Beal et al.
Information Process Institute Bulletin "Nishigaki et al. Analysis on Disk Cache Effects in a Sequential Access Input Process", vol. 25, No. 2, pp. 313-320 (1984).

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