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Issue No. 03 - March (1973 vol. 22)
ISSN: 0018-9340
pp: 251-254
T.F. Arnold , Bell Telephone Laboratories, Inc.
Duplication is a technique frequently employed to achieve high reliability for a repairable system. Although the philosophy of duplication is that it takes two faults to place a system out of service, there are generally some critical single faults that cause a system failure. This paper considers the effect of such a set of faults on a repairable system's reliability. It is shown that even a small number of such faults may severely degrade the mean time to system failure and the expected downtime for an otherwise highly reliable system.
Coverage, fault tolerance, recovery, redundancy, reliability, reliability estimation.

T. Arnold, "The Concept of Coverage and Its Effect on the Reliability Model of a Repairable System," in IEEE Transactions on Computers, vol. 22, no. , pp. 251-254, 1973.
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