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Time-lag duplexing-a fault tolerance technique for online transaction processing systems

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2 Author(s)
Chandra, A. ; Int. Bus. Machines Corp., Austin, TX, USA ; Bossen, D.C.

In this paper the concept of time-lag duplexing is proposed to achieve fault tolerance. Time-lag duplexing incorporates time and component redundancy to provide for transient errors both easy error recovery and tolerance against errors in common irredundant components. As a result, minimum performance and cost penalties are incurred. In this paper the fault detection and recovery algorithm using time-lag duplexing is shown for both transient and permanent faults. We show the applicability of time-lag duplexing by developing a prototype Online Transaction Processing (OLTP) System in a Network Computing Environment. Faults are injected into this prototype to show the viability of this technique

Published in:

Fault-Tolerant Systems, 1997. Proceedings., Pacific Rim International Symposium on

Date of Conference:

15-16 Dec 1997

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