Energy is one of the biggest expenses for a data center, most of which is attributed to the cooling system, as well as the many underlying parts, such as network equipment and the large number of machines used.These infrastructures are very energy-intensive, and their number is constantly increasing around the world, especially due to the growing popularity of the Cloud Computing.A lot of software is needed to run these infrastructures, especially for network management, data storage, task scheduling and the supervision of all hardware and software.All these software consumes a significant amount of energy, but are not taken into account in the calculation of the energy efficiency of the infrastructures.The scientific community as well as d...