Title :
Approximate availability analysis of VAXcluster systems
Author :
Ibe, Oliver C. ; Howe, Richard C. ; Trivedi, Kishor S.
Author_Institution :
Digital Equipment Corp., Andover, MA, USA
fDate :
4/1/1989 12:00:00 AM
Abstract :
The availability of an n-processor VAX cluster system is determined using a hierarchical approach that allows: (1) a closed-form answer to an apparently difficult problem to be obtained, and (2) the determination of the optimal number of processors in the cluster for a given set of cluster parameters. The approach is a two-level hierarchical model in which the lower-level model is a nine-state Markov chain that is solved in a closed form. The nine-state Markov chain is then aggregated into a three-state device analogous to a diode. Subsequently, the system availability is computed by analyzing a simple network
Keywords :
Markov processes; multiprocessor interconnection networks; reliability; VAXcluster systems; approximate availability analysis; closed-form answer; hierarchical approach; nine-state Markov chain; reliability; two-level hierarchical model; Availability; Computer networks; Connectors; Control systems; Diodes; Failure analysis; Identity-based encryption; Network servers; Resumes; Weight control;
Journal_Title :
Reliability, IEEE Transactions on
