NDLI: Optimizing IT Service Costs with Respect to the Availability Service Level Objective

Content Provider	IEEE Xplore Digital Library
Author	Bosse, S. Splieth, M. Turowski, K.
Copyright Year	2015
Description	Author affiliation: Fac. of Comput. Sci., Otto von Guericke Univ., Magdeburg, Germany (Bosse, S.; Splieth, M.; Turowski, K.)
Abstract	Meeting the availability service level objective while minimizing the costs of the IT service provision is a major challenge for IT service designers. In order to optimize component choices and redundancy mechanisms, the redundancy allocation problem (RAP) was defined. RAP solution algorithms support decision makers with (sub)optimal design configurations that trade-off availability and costs. However, the existing RAP definitions are not suitable for IT service design since they do not include inter-component dependencies such as common mode failures. Therefore, a RAP definition is provided in this paper in which the characteristics of modern IT systems such as standby mechanisms, performance degradation and generic dependencies are integrated. The RAP definition and an adapted genetic algorithm are applied to optimize the costs of an excerpt of an application service provider's IT system landscape. The results demonstrate that the developed approach is applicable and suitable to minimize IT service costs while fulfilling the availability guarantees that are documented in service level agreements.
Starting Page	20
Ending Page	29
File Size	227541
Page Count	10
File Format	PDF
e-ISBN	9781467365901
DOI	10.1109/ARES.2015.11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-08-24
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computational modeling Redundancy Sociology Estimation IT Service Management Availability Management Redundancy Allocation Problem Statistics Optimization Genetic algorithms
Content Type	Text
Resource Type	Article

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