Resource Management in Virtualized Data Center Based-on AHP and TOPSIS under Fuzzy Environment

In this paper, a three level resource managementsystem for virtualized data center ispresented. Three levels are defined as vitrualmachine level controller (VLC), host level controller(HLC) and central level controller (CLC).When ideal resources are available, VLC andHLC can perform resource management. In thecase of overloading or underloading condition ata host, CLC manages resources by giving migrationdecisions. This paper presents an evaluationmodel for the decision support of VM migrationin VDC based on the analytical hierarchyprocess (AHP) and the technique for order preferenceby similarity to ideal solution (TOPSIS)under fuzzy environment. VM and target serverselections are multi-criteria decision makingproblems. AHP is used for criteria weight consistencychecking and Fuzzy TOPSIS is used forfinal ranking. The numerical evaluation is conductedto illustrate the utilization of the model