Dependability and performability analysis using stochastic Petri nets

摘要: Performance, reliability, availability, and safety etc. are the key factors that need to be modeled understand dynamic behavior of a system. Reliability, related measures collectively known as dependability. In classical modeling, performance system has been independent faulty (or fault-tolerant) many computer communication systems, however, even if some components fail, continues function correctly, although at degraded level. Analysis Fault-tolerant systems from pure viewpoint tends optimistic since it ignores failure-repair, gracefully degrading On other hand, dependability analysis too conservative considerations not accounted for [40]. To capture such behavior, composite measure called performability defined by Beaudry [2] Meyer [27, 28]. The approach is very useful in modeling graceful degradation Pure reliability analyses then special cases analysis.