Dependability Under Priority Repair Disciplines

We have studied the operational behaviour of a complex system consisting of two classes of units (with standby redundancy in one class) under two repair disciplines, viz., preemptive-resume and preemptive-repeat. Units have constant failure rate, while repair follows general probability distributions. Supplementary variable and Laplace transform techniques have been used to obtain the transient state probabilities for such a system. From these, steady state behaviour of the complex system has been examined.