Quality of service scheme for intra/inter-data center communications

Most Information Technology (IT) services nowadays rely on one or multiple data centers. In this paper, we propose a Quality of Service (QoS) scheme for Intra/Inter data center communications systems. The proposed scheme is based on differentiation of traffic into different class categories. The differentiation is based on the source of traffic as well as the specific traffic's requirements. We conduct a comprehensive performance study for the proposed scheme. Our results demonstrate the benefits of deploying a QoS scheme in data centers especially if there is a considerable number of live virtual machine migrations among its servers. By completing such migration quickly, the Quality of Experience (QoE) will not degrade and the workload will be kept balanced among all the servers in the Data Center. Additionally, our proposed scheme considers the live virtual machine migrations among different Data Centers which is currently rapidly increasing.