Patent
1995-07-06
1998-04-28
Coleman, Eric
395733, G06F 1324
Patent
active
057457719
ABSTRACT:
A plurality of disc units, an array control unit, and a host controller connecting mechanism for connecting them to a host controller through a system interface are mounted on the same circuit board. The order of interrupts of requests for connecting of disc units is detected, and the disc units are connected to a common bus selectively. Cables for interconnecting constituent elements of the disc array device and supporting mechanisms for the disc units can be dispensed with, and consequently the cost can be reduced. Useless rotation waiting is avoided, improving the data transfer rate. The disc array device can be built in the host device and connected directly to the system bus. Therefore the ease of operation can be improved.
REFERENCES:
patent: 5179704 (1993-01-01), Jibbe
patent: 5233594 (1993-08-01), Wilhelm
patent: 5249279 (1993-09-01), Schmenk
patent: 5471603 (1995-11-01), Yokote
patent: 5530831 (1996-06-01), Akiyama
patent: 5530960 (1996-06-01), Parks
patent: 5572661 (1996-11-01), Jacobson
Kagimasa Toyohiko
Kakuta Hitoshi
Kamo Yoshihisa
Kanai Hiroki
Ohba Akihiko
Coleman Eric
Hitachi , Ltd.
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