ABSTRACT
Worldwide data centers alone consume 26 GW of electrical power corresponding to about 1.4% of the worldwide energy consumption [1]. This amount of power consumption is growing by approximately 12% each year by increasing Internet traffic. The power consumption in data centers originates from the involved computing, storage, and interconnection equipment; heating, ventilation, and air conditioning (HVAC); uninterruptible power supply (UPS) systems; and lighting facilities.
