Results 221 to 230 of about 121,900 (274)
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Effect of Standby Redundancy on System Reliability
IEEE Transactions on Reliability, 1976Two reliability models for a 2-unit cold-standby intermittently available system, whose units are subject to repair and preventive maintenance, have been studied. In Model I, the Laplace Transform of the pdf of `Disappointment time' and in Model II, the Laplace Transform of the `Interference time' are derived.
Kapur, P. K., Kapoor, K. R.
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Stochastic Behavior of a Standby Redundant System
IEEE Transactions on Reliability, 1978The system has two subsystems, A and B. Subsystem A is a 2-out-of-(n+1):F system with switch failure; subsystem B has only one unit. Failure-time distributions of units are exponential whereas repair-time distributions are arbitrary. Abundant use of semi-Markov process technique is made to obtain mean time to system failure, steady-state availability ...
Kumar, Ashok, Lal, Roshan
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A Review of Standby Redundant Systems
IEEE Transactions on Reliability, 1980This article critically reviews the existing literature on standby redundant systems. Concepts related to standby systems have been defined. Parameters in which system designers and engineers may be interested have been discussed. Some of these parameters are mean-time-to-system failure, s-expected number of visits to a state, steady-state availability,
Kumar, Ashok, Agarwal, Manju
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On a Two-Unit Standby Redundant System with Standby Failure
Operations Research, 1971This paper derives the mean time and the Laplace-Stieltjes transform of the distribution of the first time to system-down for a two-unit standby redundant system when failure of the unit in standby is allowed. Further, it shows that special cases of the results obtained here coincide with earlier results for the two-unit standby redundant system and ...
Shunji Osaki, Toshio Nakagawa
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Redundancy optimization problem with warm-standby redundancy
2010 Proceedings - Annual Reliability and Maintainability Symposium (RAMS), 2010This paper describes and demonstrates a solution methodology that determines optimal design configurations that maximize the reliability of a wide range of non-repairable systems. The problem formulation considers the generic case of warm-standby redundancy and extends state-of-the-art reliability optimization techniques in several dimensions: (1) non ...
Suprasad V. Amari, Glenn Dill
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On Standby Redundancy with Delayed Repair
IEEE Transactions on Reliability, 1975This paper derives a) the Laplace-Stieltjes transform of the time-to-system-failure distribution, and b) the mean time-to-system-failure. The system consists of several elements with one repair facility which remains idle until a queue of failed units is built up.
Z. Khalil, I. Bougas
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Standby redundancy optimization problems with fuzzy lifetimes
Computers & Industrial Engineering, 2005Three types of system performances--the expected system lifetime, α-system lifetime, and system reliability--characterized in the context of credibility are investigated in this paper. Some fuzzy simulations are designed to estimate these system performances. In order to formulate general standby redundancy optimization problems with fuzzy lifetimes, a
Ruiqing Zhao, Baoding Liu
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Standby Redundant Systems in Random Environment
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 1978AbstractReliability systems with one or two redundant standby components are studied. The systems are situated in a random environment which generates shocks according to a renewal point process. The shocks will cause a component to fail with a certain probability.
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Availability Assessment of HA Standby Redundant Clusters
2010 29th IEEE Symposium on Reliable Distributed Systems, 2010Computing systems are becoming the heart of modern technology, implementing critical tasks usually demanded to and implying human interactions. This highlights the problem of dependability in computer science contexts. High availability computing/clusters is a possible solution in such cases, implementing standby redundancy as a trade-off between ...
DISTEFANO, SALVATORE +2 more
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Virtual Redundancy for Active-Standby Cloud Applications
IEEE INFOCOM 2018 - IEEE Conference on Computer Communications, 2018VM redundancy is the foundation of resilient cloud applications. While active-active approaches combined with load balancing and autoscaling are usually resource efficient, the stateful nature of many cloud applications often necessitates 1+1 (or $1+\mathbf{n}$ ) active-standby approaches.
Gueyoung Jung +5 more
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