Reliability and Availability Models for Maintained Systems Featuring Hardware Failures and Design Faults

Author

Costes, A. ; Landrault, C. ; Laprie, J.C.

Author_Institution

Laboratoire d´´Automatique et d´´Analyse des Systemes, Centre National de la Recherche Scientifique

Issue

6

fYear

1978

fDate

6/1/1978 12:00:00 AM

Firstpage

548

Lastpage

560

Abstract

Modeling of systems featuring hardware and software faults is studied as a means of evaluating the availability and reliability characteristics. The case of a nonredundant computer is studied and it is shown that the unavailability presents an overshoot with respect to its asymptotic value whose height and length are functions of the failure rates associated with the different design errors. Fault-tolerant systems are studied that include protective redundancies both at the hardware level and at the software level; the importance of homogeneous solutions on both levels is shown.

Keywords

Availability; Markov and semi-Markov models; hardware and software modeling; hardware and software redundancy; reliability; Availability; Computer errors; Error correction; Fault tolerant systems; Hardware; Laplace equations; Protection; Redundancy; Software maintenance; Vocabulary; Availability; Markov and semi-Markov models; hardware and software modeling; hardware and software redundancy; reliability;

fLanguage

English

Journal_Title

Computers, IEEE Transactions on

Publisher

ieee

ISSN

0018-9340

Type

jour

DOI

10.1109/TC.1978.1675146

Filename

1675146