Simulation study for the optimal repair capacity of an IT maintenance center based on LRD failure distribution

Authors:
So Young Sohn;Ki Yeol Oh
Affiliations:
Department of Computer Science and Industrial Systems Engineering, Yansei University, 134, Shinchondong, Sudemungu Sudaemoon-ku, Seoul 120749, South Korea;Department of Computer Science and Industrial Systems Engineering, Yansei University, 134, Shinchondong, Sudemungu Sudaemoon-ku, Seoul 120749, South Korea
Venue:
Computers and Operations Research
Year:
2004

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Abstract

Consider various host systems that consist of both hardware and software. There is an IT center which governs the maintenance activities of all of those host systems. The center's major concern is deciding the proper level of repair capacity for various kinds of failures due to hardware, software, and operator related problems where corresponding failure and repair times may exhibit fairly large variations. In this paper, we use Monte Carlo simulation in order to decide the optimal repair capacity when both failures and repair times of individual host systems exhibit long-range dependent (LRD) property. In terms of utilization rate, average and maximum waiting times, we suggest the optimal capacity of maintenance. Various sensitivity analyses follow.