SLA Guaranteed Migration Decision Model Using MCDM Approach

摘要

In Virtualized Data Center (VDC), the workload in each node changes dynamically overtime, so the workload in some machines may exceed the threshold, which not only cannot guarantee the quality of service requirements (QoS), but also waste resources. One of the key benefits of virtualization is reassignment of a virtual machine to another physical host can be done when resource shortage or poor utilization conditions occurs in host. However, in this case, efficient migration decision is required to reduce migration cost and ping-pong effect. In this paper, we propose SLA guaranteed migration decision model for resource management in VDC based on the integrated approach of Analytical Hierarchy Process (AHP) and the Preference Ranking Organization METHod for Enrichment Evaluations (PROMETHEE). In this case, AHP is used to assign weights to the criteria to be used in selection phase, while PROMETHEE is employed to determine the priorities of the alternatives.