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Availability of enterprise IT systems: an expert-based Bayesian model
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.ORCID iD: 0000-0003-2017-7914
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.ORCID iD: 0000-0002-3293-1681
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.
2010 (English)In: Proc. Fourth International Workshop on Software Quality and Maintainability, 2010Conference paper, Published paper (Refereed)
Abstract [en]

Ensuring the availability of enterprise IT systems is a challenging task. The factors that can bring systems down are numerous, and their impact on various system architectures is difficult to predict. At the same time, maintaining high availability is crucial in many applications, ranging from control systems in the electric power grid, over electronic trading systems on the stock market to specialized command and control systems for military and civilian purposes. The present paper desccribes a Bayesian decision support model, designed to help enterprise IT systems decision makers evaluate the consequences of their decisions by analyzing various scenarios. The model is based on expert elicitation from 50 academic experts on IT systems availability, obtained through an electronic survey. The Bayesian model uses a leaky Noisy-OR method to weigh together the expert opinions on 16 factors affecting systems availability. Using this model, the effect of changes to a system can be estimated beforehand, providing decision support for improvement of enterprise IT systems availability.

Place, publisher, year, edition, pages
2010.
Keyword [en]
Systems availability, High availability, Downtime, Bayesian networks, Noisy-OR, Expert elicitation
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-80631OAI: oai:DiVA.org:kth-80631DiVA: diva2:496562
Conference
14th European Conference on Software Maintenance and Reengineering, CSMR 2010. Madrid, Spain. March 15-18, 2010
Note
QC 20120420Available from: 2012-02-10 Created: 2012-02-10 Last updated: 2012-04-20Bibliographically approved

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Franke, UlrikJohnson, Pontus

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
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  • de-DE
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  • fi-FI
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Output format
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  • asciidoc
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