NDLI: Optimal Placement of Spare Modules in a Cascaded Chain

Content Provider	IEEE Xplore Digital Library
Author	Parhami, Behrooz
Copyright Year	1963
Abstract	A class of redundant cascaded chains with i.i.d. modules is considered in which recovery from a failure takes place by replacing the faulty module by a spare module. The complexity of the reconfiguration process depends upon the location of spare modules in the cascade. This paper deals with the question of optimally placing the spare modules in order to minimize the s-expected recovery time (down time) of the system. Exact analysis is carried out for cascades with one and two spare modules and an approximate analysis is given for three or more spares. Even though exact analysis does not seem to be practical in the general case, the symmetry of spare module positions in the special cases discussed here and linearity of the system suggest that one might expect the optimal positions to be symmetric in general. Because of this symmetry, one can reduce the number of variables to be considered in the general case, however, some inaccuracies might be introduced.
Sponsorship	IEEE Reliability Society
Starting Page	280
Ending Page	282
Page Count	3
File Size	454803
File Format	PDF
ISSN	00189529
Volume Number	R-26
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1977-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Redundancy Failure analysis Reliability theory Linearity Programmable logic arrays Pipelines Fault tolerant systems Flip-flops Reconfiguration Redundant cascade Standby redundancy Series system Optimal redundancy
Content Type	Text
Resource Type	Article
Subject	Safety, Risk, Reliability and Quality Electrical and Electronic Engineering

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