Storage system having logical subsystems configured in accordanc

Details Storage system having logical subsystems configured in accordanc Storage system having logical subsystems configured in accordanc

1993-02-11

1998-07-21

Chan, Eddie P.

Electrical computers and digital processing systems: memory

Storage accessing and control

Memory configuring

711170, 711112, G06F 1206

Patent

active

057847037

ABSTRACT:
A storage array system having a plurality of physical storage devices from and into which data are read and written by a host system, comprising a physical system configuration information table which stores configuration information of the plurality of physical storage devices therein; a logical system configuration information table which stores therein configuration information of a plurality of logical storage subsystems in the case where the plurality of physical storage devices have been divided into the logical storage subsystems; and a division designation device which effects at least one of a number of designations in compliance with a command received from the host system. The designations include an n-equal-part designation in which a total storage capacity of the physical storage devices is equally divided in n (an integer of at least 2) for the n logical storage subsystems, a divisional allotment rate designation in which the total storage capacity is divided in accordance with a specified number for division and specified rates of capacities to be allotted to the respective logical storage subsystems, and a physical boundary division designation in which the total storage capacity is divided in accordance with positions for the division specified in physical storage unit.

REFERENCES:
patent: 4607346 (1986-08-01), Hill
patent: 5148432 (1992-09-01), Brant et al.
patent: 5148540 (1992-09-01), Beardsley et al.
patent: 5379417 (1995-01-01), Lui et al.
patent: 5568629 (1996-10-01), Gentry et al.
"PC-MS DOS 4.0 for Hard Disk Users", David D. Busch, 1989, pp. 85-99.

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