Server-Centric PON Data Center Architecture

Over the last decade, the evolution of data center architecture designs has been mainly driven by the ever increasing bandwidth demands, high power consumption and cost. With all these in mind, a significant potential to improve bandwidth capacity and reduce power consumption and cost can be achieved by introducing PONs in the design of the networking fabric infrastructure in data centers. This work presents a novel server-centric PON design for future cloud data center architecture. We avoided the use of power hungry devices such as switches and tuneable lasers and encouraged the use of low power passive optical backplanes and PONs to facilitate intra and inter rack communication. We also tackle the problem of resource provisioning optimization and present our MILP model results for energy efficient routing and resource provisioning within the PON cell. We optimized the selection of hosting servers, routing paths and relay servers to achieve efficient resource utilization reaching 95% and optimum saving in energy consumption reaching 59%.