Resource utilization analysis in a disaggregated datacenter architecture

Datacenters Total Cost of Ownership (TCO) is increasingly important for future information and communication technologies (ICT), because the increased usage of ICT, together with increasing energy costs and the need to reduce green house gas emissions call for energy efficient technologies that decrease the overall energy consumption of computation, storage and communications. Disaggregated architectures has recently received considerable attention, as a promising approach for delivering ICT services by improving the utilization of datacenter resources. In this paper, we compare the resource utilization of a regular datacenter to a disaggregated one through simulation. Our initial results suggest that the resource fragmentation in the disaggregated datacenter is significantly lower in scenarios where VMs have unbalanced compute and memory requirements. In these scenarios, in the disaggregated architecture up to 88% of resources can be powered off because they are not utilized. As a result, this might translate into almost 50% energy savings.