In recent years, the demand for compute capability has increased rapidly, and data centers all over the world are consuming much more power than before. Data centers across the globe consume around 100 GWh and it is expected to increase by 30% by 2016. In 2012, the increase in data center energy consumption in the United States and China was 800MWh and 500MWh respectively, based on Forest & Sullivan market survey. This increasing demand of data usage and the resulting growth in power consumption presents a challenge to the thermal community when trying to introduce efficient real time thermal management controls. These controls are vital to maintain power efficiency, from a cooling point of view.