Programmable disk array controller having n counters for n disk

Details Programmable disk array controller having n counters for n disk Programmable disk array controller having n counters for n disk

1992-07-06

1995-11-28

Lee, Thomas C.

Boots, shoes, and leggings

3642394, 3642383, 3642435, 364DIG1, H01J 300

Patent

active

054716403

ABSTRACT:
A programmable disk array controller distributes contiguous data from a host processor across a plurality of disk drives. The controller includes a device port with a plurality of connected disk drives. A dual ported buffer memory receives data from the host processor for storage to the disk drives. The programmable controller accesses data from the buffer memory and causes it to be fed to the device port for storage in the disk drives. The programmable controller includes a variable increment counter associated with each disk drive for controlling the data address accessed from the buffer memory. Each variable increment counter is programmable to sequentially increment a count by a value n so that its associated disk drive receives every nth data segment from the buffer memory.

REFERENCES:
patent: 3626374 (1971-12-01), Ghinlund
patent: 4509118 (1985-04-01), Shenk
patent: 4688168 (1987-08-01), Gudaitis et al.
patent: 5208813 (1993-05-01), Stallmo
Patterson et al, "A Case for Redundant Arrays of Inexpensive Disks RAID", Mar. 1988, 109-116.

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