Apparatus and method for accessing plural storage devices in pre

Details Apparatus and method for accessing plural storage devices in pre Apparatus and method for accessing plural storage devices in pre

1997-03-31

1999-08-17

Chan, Eddie P.

Electrical computers and digital processing systems: memory

Storage accessing and control

Access timing

711112, 711168, 711151, 711150, 395865, 395856, 395860, G06F 1200

Patent

active

059408650

ABSTRACT:
A data input/output control apparatus and a storage device accessing method are provided wherein multiple information is simultaneously supplied to multiple users. Multiple information to be supplied to users is stored distributedly in a plurality of storage devices. A slot allocating unit determines the number S of slots such that the value S is prime to the number D of storage devices, and groups time zones in which data is read from or written into the storage devices to S slots in access order. On receiving an access demand from a user, the slot allocating unit allocates slots to the user. When writing data into a specific storage device, an access control unit writes data into the specific storage device by using a specific slot for accessing the specific storage device, from among the slots allocated to the user, and a slot which is D-1 slots before the specific slot. Consequently, a plurality of groups (dependence rings) of mutually dependent slots are formed.

REFERENCES:
patent: 4855996 (1989-08-01), Douskalis
patent: 5351246 (1994-09-01), Blaum et al.
patent: 5612790 (1997-03-01), Sakamoto et al.
patent: 5752256 (1998-05-01), Fujii et al.
patent: 5764893 (1998-06-01), Okamoto et al.

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