Energy-efficient Scaling of Active Electrical/Optical Switches in Hybrid Packet/Circuit Switched Data Center Networks

In the electrical/optical hybrid data center networks, the switching fabric is consuming a significant amount of energy. Regarding the fact that the data center traffic is time-varying, this paper studies the energy-efficient scaling approaches to manage the ON/OFF state of optical circuit switches and electrical packet switches to save energy while ensuring service quality. Simulation results show that the energy consumption of the hybrid data centers is saved, and the performance of the data centers is not degraded significantly.