Abstract
Request for power saving of data centers in Japan becomes higher due to the fact that almost all nuclear power plants have been shut down after the Tohoku Earthquake. Target of our research is to establish a control method to save electric power of total datacenter including facilities and ICT instruments. In our first paper on datacenter power saving, we have described an energy simulator which estimates the total electric power of datacenter and evaluates power saving controls of datacenter. In our second paper, we have presented an original real-time thermal fluid simulator and have showed that power consumption of the whole datacenter can be reduced up to 30% and more by workload consolidation and optimal cooling control. In this paper we show that 50% and more power saving is feasible by a coupling control of ICT and cooling facilities for an actual datacenter with 160 servers and an outdoor air cooling system.
