Computer systems availability evaluation using a segregated failures model Journal Articles

abstract

• AbstractThis paper presents the segregated failures model (SFM) of availability of fault‐tolerant computer systems with several recovery procedures. This model is compared with a Markov chain model and its advantages are explained. The basic model is then extended for the situation when the coverage factor is unknown and the failure escalation rates must be used instead. A simple practical analytical approach to availability evaluation is provided and illustrated in detail by estimating the availability of two versions of a reliable clustered computing architecture. For these examples, numeric values of availability indexes are computed and the contribution of each recovery procedure to total system availability is analysed. Copyright © 2008 John Wiley & Sons, Ltd.

authors

• Vilkomir, Sergiy A
• Parnas, David
• Mendiratta, Veena B
• Murphy, Eamonn

status

• published 

publication date

• June 2008

has subject area

• 0102 Applied Mathematics (FoR)
• 0906 Electrical and Electronic Engineering (FoR)
• Operations Research (Science Metrix)

published in

• Quality and Reliability Engineering International  Journal

keywords

• 40 Engineering

Digital Object Identifier (DOI)

• 10.1002/qre.917

start page

• 447

end page

• 465

volume

• 24

issue

• 4