The dynamic migration model for cloud service resource balancing energy consumption and QoS

The data center Energy Consumption (EC) and the user Quality of Service (QoS) are two important influencing factors, which the cloud service provider must balance in the process of providing virtual cloud services resources (VCSR). For the VCSR over-deployment phenomenon happening in cloud computing Infrastructure as a Service (IAAS), a user-oriented deployment constraint of VCSR is proposed, and the definition of user´s Service Level Agreements (SLA) and the energy consumption of data center are also suggested. On the basis of that, the model of dynamic migration of the virtual nodes is given, solved by simulated annealing algorithm. In the experiments, different strategies are compared using CloudSim. The results show that the suggested strategy has advantages on balancing the energy consumption of data center and user´s QoS.