Digital data management system for maintaining consistency of da

Details Digital data management system for maintaining consistency of da Digital data management system for maintaining consistency of da

1989-06-30

1993-08-24

Dixon, Joseph L.

Boots, shoes, and leggings

364243, 36424691, 3642592, 3642663, 364268, 3642683, 3642685, 3642851, 3649439, 36494391, 36494392, 3649442, 3641456, 3649472, 3641649, 371 101, 371 102, 371 671, 371 691, G06F 1116

Patent

active

052396371

ABSTRACT:
A digital data management system for managing a shadow set of storage media includes a plurality of storage media each accessible by at least one data processing device for I/O operations. Successive comparisons are carried out between data stored in corresponding locations in the storage media while maintaining access to the storage media for I/O operations. When inconsistency between data in corresponding locations is detected, a management operation is performed on at least one of the shadow set storage media. The management operation includes interrupting I/O operations to at least the storage medium on which the operation is performed, modifying data on one of the shadow set storage media to correct the inconsistency, and resuming availability of the storage media for I/O operations.

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