A Method for Assessing Resilience of Socio-Technical IT-Systems

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

Modern society is increasingly dependent on IT-systems. Due to this dependence it is important
that IT-networks are designed to be resilient, meaning that they will either maintain or quickly recover their
functionality when exposed to strain. Simulation-based methods that consider supply network topology as well
as system responsible for repairing supply network have previously been used and found to be beneficial for
assessing resilience of electricity and water distribution systems. A method of this kind is here applied for ITnetworks.
The aim of the present research is to test if such a method is applicable for assessing resilience of
IT-systems, meaning that: 1) it is possible to use based on available data, in this case gathered mainly through
interviews with focus groups, 2) the results are relevant for users/owners/maintainers. The method is tested in
a case study on the IT-network of one department of Lund university as well as the university core network.
Results show that the method is applicable for the studied IT-network and that we can obtain the resilience
metrics sought for. It is found that the method can enable system owners to see if and for what levels of strain
they are presently reaching their desired targets concerning system resilience. While applicable to the studied
system, feedback from system experts indicates that the method will primarily be useful for IT-systems whose
failure would 1) result in large economic values (e.g. IT-system of major private companies) or 2) lead to loss
of health or safety (e.g. IT-systems of governmental organizations and hospitals).

Details

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Subject classification (UKÄ) – MANDATORY

  • Computer Science
Original languageEnglish
Title of host publicationRisk, Reliability and Safety: Innovating Theory and Practice
PublisherCRC Press
Pages2199–2206
ISBN (Electronic)978-1-4987-8898-4
StatePublished - 2016
Publication categoryResearch
Peer-reviewedYes
EventEuropean Safety and Reliability Conference (ESREL 2016) - University of Strathclyde , Glasgow, United Kingdom
Duration: 2016 Sep 252016 Sep 29

Conference

ConferenceEuropean Safety and Reliability Conference (ESREL 2016)
CountryUnited Kingdom
CityGlasgow
Period2016/09/252016/09/29