Technique for information protection on fault-tolerant redundant

Details Technique for information protection on fault-tolerant redundant Technique for information protection on fault-tolerant redundant

1989-11-22

1992-06-30

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data verification

371 683, G11B 509, G06F 1540

Patent

active

051268892

ABSTRACT:
The present invention relates to a technique which provides swift and easy error correction and detection on one or more fault-tolerant redundant storage devices. In the presence technique, an information packet including (a) the destined storage location identifier in a first section, (b) the information in a second section, and (c) a unique monotonically increasing number in a third section, is sent by a processor to one or more redundant storage device controllers for storage in relative locations of the redundant storage device(s), where the monotonically increasing number is incremented and applied to each sequential information packet to be stored on the redundant storage device(s). When relative storage locations of the redundant storage device(s) are subsequently read and the information is found not to match, an error has occurred on one of the storage device(s), and if the storage location identifier on the compared information packets are also found not to match, then the information packet including the correct storage location identifier is used. However, if the storage location identifiers are found to match, then the compared information packet with the higher monotonically increasing number is deemed to contain the correct information.

REFERENCES:
patent: 4772963 (1988-09-01), Van Lahr et al.
"An Example of Microprocessor's Application in Minicomputer Systems: a Copy Volume Design and Implementation" Microprocessing and Microprogramming, 1984, pp. 331-339.
Hendrie, Electronics, vol. 56, No. 2, Jan. 27, 1983, pp. 103-105.
Brusamolino et al., Microprocessing & Microprogramming, vol. 13, No. 5, May 1984, pp. 331-339.
Kavanagh, Management Review (GB), Sep. 1984, pp. 22-23.

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