Disk array system including a dual-ported staging memory and con

Details Disk array system including a dual-ported staging memory and con Disk array system including a dual-ported staging memory and con

1997-04-15

1998-07-28

Chan, Eddie P.

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

711149, 711169, 39518204, G06F 1316, G06F 1110

Patent

active

057874638

ABSTRACT:
The present invention is directed to memory subsystems that use redundant arrays of inexpensive disks (RAID). The subsystem enables dual concurrent accesses to the subsystem buffer by the host and RAID engine, which calculates parity information associated with data being transferred between the host and disk drives, by including a dual-ported staging memory where the host and disk drives are coupled to one port and the RAID engine to the other port. Positioning the RAID engine on the opposite side of the staging memory in relation to the host and disk drives allows for pipelined asynchronous memory subsystem operation, improving system throughput.

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