A bi-objective model for redundancy allocation problem in designing server farms: mathematical formulation and solution approaches

Vahid Baradaran () and Amir Hossein Hosseinian
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Vahid Baradaran: Islamic Azad University, Tehran North Branch
Amir Hossein Hosseinian: Islamic Azad University, Tehran North Branch

International Journal of System Assurance Engineering and Management, 2020, vol. 11, issue 5, No 6, 935-952

Abstract: Abstract Communication has a remarkable and strategic role for the success of every enterprise. Nowadays, computer networks can be used as efficient tools to create connections between departments of an organization and to communicate with customers. Therefore, it is crucial for companies with IT-based activities to use computer networks so as to increase their efficiencies. In this paper, a bi-objective mathematical formulation is proposed for server farms. A server farm is a cluster of computer systems connected together to provide services to an organization and its customers. This model optimizes reliability and cost of server farms, concurrently. This problem is called the redundancy allocation problem that belongs to the class of NP-hard problems. Therefore, three meta-heuristics namely non-dominated sorting genetic algorithm II, pareto envelope-based selection algorithm II, and strength pareto evolutionary algorithm II have been hired to obtain feasible solutions in a reasonable computation time. To evaluate the performances of meta-heuristic methods, the ε-constraint method as an exact algorithm has also been used. The outputs demonstrate appropriate effectiveness of the employed algorithms.

Keywords: Redundancy allocation problem; Evolutionary algorithms; Computer networks; Server farms (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1007/s13198-020-01020-8

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