Excavating
Patent
1991-10-18
1994-06-28
Beausoliel, Jr., Robert W.
Excavating
371 13, G06F 1100
Patent
active
053255194
ABSTRACT:
A computer system comprises a storage device comprising a plurality of locations for storing data and having a defined audit partition region comprising one or more of said locations and processing circuitry for detecting access requests to alter data on respective sets of one or more of locations of the storage device. Responsive to each access request, the processing circuitry stores data from said respective set of locations in the audit partition region prior to performing the access request, such that a sequence of data transfers from the storage device is stored in the audit partition region in a known order. Responsive to a user request, data is restored from the sequence of data transfers in the audit partition region to the respective set of locations on the storage device to return the storage device to a previous state.
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patent: 4996687 (1991-02-01), Hess
patent: 5086502 (1992-02-01), Malcolm
patent: 5138710 (1992-08-01), Kruesi et al.
Kohler, Walter H., "Overview of Synchronization and Recovery Problem in Distributed Data Bases", IEEE, 1980, pp. 433-441.
Crus, R. A., "Data Recovery in IBM Database 2", IBM System Journal, vol. 23, No. 2, 1984 pp. 178-188.
Hultgren Charles D.
Long Donald W.
Beausoliel, Jr. Robert W.
Hua Ly V.
Texas Microsystems, Inc.
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