Issue No. 01 - Jan. (1986 vol. 12)
Ushio Sumita , Graduate School of Management, University of Rochester, Rochester, NY 14627
Yasushi Masuda , Graduate School of Management, University of Rochester, Rochester, NY 14627
A new hardware-software reliability model is developed where lifetimes and repair times of the software subsystem have general system state-dependent distributions. The hardware subsystem constitutes an independent alternating renewal process having exponential up-times and general down-times. Multiple errors may be introduced or removed through repairs. The model is formulated as a multivariate stochastic process. To study the performance of the software subsystem under the influence of hardware failures, expressions of various time dependent performance measures are derived. Using the matrix Laguerre transform of Sumita , corresponding computational procedures are also developed. A numerical example is given, demonstrating speed, accuracy, and stability of these procedures.
Hardware, Maintenance engineering, Transforms, Software systems, Vectors, Software reliability, time-dependent compound performance measures, Integrated hardware-software reliability model, matrix Laguerre transform, multiple error generation and removal, state-dependent general lifetimes and repair times
U. Sumita and Y. Masuda, "Analysis of software availability/reliability under the influence of hardware failures," in IEEE Transactions on Software Engineering, vol. 12, no. , pp. 32-41, 1986.