With growing use of internet and exponential growth in amount of data to bestored and processed (known as 'big data'), the size of data centers hasgreatly increased. This, however, has resulted in significant increase in thepower consumption of the data centers. For this reason, managing powerconsumption of data centers has become essential. In this paper, we highlightthe need of achieving energy efficiency in data centers and survey severalrecent architectural techniques designed for power management of data centers.We also present a classification of these techniques based on theircharacteristics. This paper aims to provide insights into the techniques forimproving energy efficiency of data centers and encourage the designers toinvent novel solutions for managing the large power dissipation of datacenters.
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