Calculating availability and performability measures of repairable computer systems using randomization

Author:

de Souza e Silva Edmundo1,Gail H. Richard2

Affiliation:

1. Federal Univ. of Rio de Janeiro, Rio de Janeiro, Brazil

2. IBM T. J. Watson Research Center, Yorktown Heights, NY

Abstract

Repairable computer systems are considered, the availability behavior of which can be modeled as a homogeneous Markov process. The randomization method is used to calculate various measures over a finite observation period related to availability modeling of these systems. These measures include the distribution of the number of events of a certain type, the distribution of the length of time in a set of states, and the probability of a near-coincident fault. The method is then extended to calculate performability distributions. The method relies on coloring subintervals of the finite observation period based on the particular application, and then calculating the measure of interest using these colored intervals.

Publisher

Association for Computing Machinery (ACM)

Subject

Artificial Intelligence,Hardware and Architecture,Information Systems,Control and Systems Engineering,Software

Reference23 articles.

1. CINLAR E. Introduction to Stochastic Processes. Prentice-Hall Englewood Cliffs N.J. 1975. CINLAR E. Introduction to Stochastic Processes. Prentice-Hall Englewood Cliffs N.J. 1975.

2. DAVID H.A. Order Statistics. 2nd Ed. Wiley New York 1981. DAVID H.A. Order Statistics. 2nd Ed. Wiley New York 1981.

3. Calculating Cumulative Operational Time Distributions of Repairable Computer Systems

4. DE SOUZA E SILVA E. AND GAIL H.R. Calculating availability and performability measures of repairable computer systems using randomization. IBM. Res. Rep. RC12386. IBM Thomas J. Watson Research Center Yorktown Heights N.Y. Dec. 1986. DE SOUZA E SILVA E. AND GAIL H.R. Calculating availability and performability measures of repairable computer systems using randomization. IBM. Res. Rep. RC12386. IBM Thomas J. Watson Research Center Yorktown Heights N.Y. Dec. 1986.

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