Excavating
Patent
1990-09-04
1993-01-05
Atkinson, Charles E.
Excavating
371 13, G06F 1110
Patent
active
051777444
ABSTRACT:
Method and apparatus for error recovery in primary storage is provided by backup storage that stores a complete copy of primary storage. When a parity error is detected, the backup storage is used to replace data in the primary storage or the parity of primary storage. This apparatus is controlled by a processor controller which makes this replacement by comparing the primary storage, backup storage, and the primary parity storage. If after re-execution of the operation errors are still detected, the processor controller copies the data from primary storage to a second storage and retries the operation.
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Cesare Brian K.
Slegel Timothy J.
Whitaker Darell S.
Atkinson Charles E.
International Business Machines - Corporation
Scheer Michael J.
Troike Robert L.
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