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A Characterization of Faults in Systems

Lookup NU author(s): Dr Paul Ezhilchelvan, Emeritus Professor Santosh Shrivastava

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Abstract

Faults are causes of system failures. The function of a fault tolerant algorithm of a system is to detect failures of the system's components and to attempt to tolerate these failures so as to provide specified system services. The design of such an algorithm for any given system function requires making assumptions about the behaviour of faulty components. We present a fault and failure classification for components using 'timeliness' and 'expected value' as the two properties of a component's response. This classification helps the design of family of fault tolerant algorithms capable of tolerating faults - from the simple ones to the most complex ones. Examples from distributed systems are used to illustrate these ideas.


Publication metadata

Author(s): Ezhilchelvan PD, Shrivastava SK

Publication type: Report

Publication status: Published

Series Title: Computing Laboratory Technical Report Series

Year: 1985

Pages: 21

Print publication date: 01/09/1985

Source Publication Date: September 1985

Report Number: 206

Institution: Computing Laboratory, University of Newcastle upon Tyne

Place Published: Newcastle upon Tyne

URL: http://www.cs.ncl.ac.uk/publications/trs/papers/206.pdf


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