Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Patent
1998-06-26
2000-01-18
Hua, Ly V.
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
G06F 1100
Patent
active
060165537
ABSTRACT:
A method and apparatus for reverting a disk drive to an earlier point in time is disclosed. Changes made to the drive are saved in a circular history buffer which includes the old data, the time it was replaced by new data, and the original location of the data. The circular history buffer may also be implemented by saving new data elements into new locations and leaving the old data elements in their original locations. References to the new data elements are mapped to the new location. The disk drive is reverted to an earlier point in time by replacing the new data elements with the original data elements retrieved from the history buffer, or in the case of the other embodiment, reads to the disk are mapped to the old data elements stilled stored in their original locations. The method and apparatus may be implemented as part of an operating system, or as a separate program, or in the controller for the disk drive. The method and apparatus are applicable to other forms of data storage as well. Also disclosed are method and apparatus for providing firewall protection to data in a data storage medium of a computer system.
REFERENCES:
patent: 5089958 (1992-02-01), Horton et al.
patent: 5297258 (1994-03-01), Hale et al.
patent: 5325519 (1994-06-01), Long et al.
patent: 5331646 (1994-07-01), Krueger et al.
patent: 5339406 (1994-08-01), Carney et al.
patent: 5404361 (1995-04-01), Casorso et al.
patent: 5487160 (1996-01-01), Bemis
patent: 5524205 (1996-06-01), Lomet et al.
patent: 5557770 (1996-09-01), Bhide et al.
patent: 5598528 (1997-01-01), Larson et al.
patent: 5604853 (1997-02-01), Nagashima
patent: 5604862 (1997-02-01), Midgely et al.
patent: 5640561 (1997-06-01), Satoh et al.
patent: 5659747 (1997-08-01), Nakajima
patent: 5751936 (1998-05-01), Larson et al.
patent: 5802264 (1998-09-01), Chen et al.
Green, R.J., et al., "Designing a Fast, On-Line Backup System for a Log-structured File System", Digital Technical Journal, vol. 8, No. 2, pp. 32-45, (1996).
Hultgren, C.D., "Fault-tolerant personal computers safeguard critical applications", I&CS Instruments and Control Systems, vol. 65, No. 9 Radnor, PA, US, pp. 23-28, (Sep. 1992).
Robinson, J.T., "Analysis of Steady-State segment storage utilizations in a log-structured file system with least-utilized segment cleaning", IBM Research Division, T. J. Watson Research Center, pp. 29-32.
"Tilios Secure Filing system--included in Applicants' application.", Offered for Sale around 1987., 1 page.
Castelletto, et al., "DB2 for VSE & VM Archiving and Recovery", IBM VSE/ESA, 1-18, (1996).
Bruggeman Edward
Ferril Chuck
Schneider Eric
Schwartz Larry
Wheeler Doug
Elisca Pierre
Hua Ly V.
Wild File, Inc.
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