Fault tolerant disk drive system with error detection and correc

Details Fault tolerant disk drive system with error detection and correc Fault tolerant disk drive system with error detection and correc

1992-08-28

1996-04-30

Beausoliel, Jr., Robert W.

Excavating

371 48, 371 491, G06F 1110

Patent

active

055131921

ABSTRACT:
A fault tolerant, magnetic disk drive array with error detection and correction. The present invention performs vertical parity checks and one or two additional diagonal parity checks on a data stream as it is read into a disk drive array. The results of these "read-in" parity checks are stored in either two or three redundant disk drives. Upon read out of the data stream from the disk drive array, similar "read-out" parity checks are performed on the data. Based upon a comparison of the "read in " and read "out" vertical and diagonal parity checks, corrupted data can be detected and corrected.

REFERENCES:
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patent: 4747080 (1988-05-01), Yamada
patent: 4768193 (1988-08-01), Takemae
patent: 4958350 (1990-09-01), Wooley et al.
patent: 5185746 (1993-02-01), Tanaka et al.

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