Disk array system

Details Disk array system Disk array system

1993-12-06

1996-06-25

Rudolph, Rebecca L.

Boots, shoes, and leggings

395842, 364DIG2, 3647521, 364957, 3649575, G06F 1200

Patent

active

055308309

ABSTRACT:
A disk array system having a plurality of disk units includes an upper-level data transfer controller for controlling transfer of data to and from an upper-level apparatus, a data buffer for temporarily storing therein data from the upper-level apparatus, a drive data transfer controller for controlling the data transfer between the buffer and the units, and a main microprocessor for controlling the the transfer controllers. When transferring data, the microprocessor indicates an address to be used in the buffer and a distribution mode of data to the data transfer controllers so that the data transfer is conducted thereafter without intervention of the microprocessor. During the transfer, the microprocessor can generate information for a subsequent data transfer to indicate the information to the transfer controllers. After a data transfer is terminated, the pertinent transfer controller can immediately execute the next data transfer, which increases the utilization efficiency of the data bus.

REFERENCES:
patent: 5210860 (1993-05-01), Pfeffer et al.
patent: 5249279 (1993-09-01), Schmenk et al.
patent: 5408644 (1995-04-01), Schneider et al.
patent: 5418925 (1995-05-01), DeMoss et al.

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