Reliability of a 2-Unit Priority-Standby Redundant System with Finite Repair Capability

This paper analyses the reliability of a 2-unit standby redundant system consisting of two dissimilar units. Unit 1 performs the desired system function whenever available for use. Unit 2 operates only during those periods when unit 1 is undergoing repair. Unit 1 can be repaired at most N times. Expressions for the Laplace-Stieltjes transform of the distribution of the Time to System Failure (TSF) and the mean TSF are derived.