Cloud computing is a universal innovation which is spreading its root in every area of modern computing. The benefits of these services are excellent, but the data centres that run these services consume lots of energy and create a serious problem in the environment due to the increased carbon footprint. This creates the need to move to green cloud computing, that is the very important area today for researchers. Green computing provides techniques for energy management, efficient cooling, recycling, server virtualization and load balancing. We have explored potential domains to handle the issues that the development of cloud computing brings along, including underutilized resources such as conventional database management servers, processors, other servers, and cooling infrastructure. Along with the advantages, we also mentioned some of the disadvantages of the techniques. However, these impediments are not a noteworthy worry for the huge scale execution of these strategies. Once implemented, that is expected to mitigate the vitality issue and the growing carbon footprint of cloud data centres. We also discussed about a few parameters that can be utilized to calculate the energy utilization of data server and furthermore to evaluate the green energy coefficient of cloud server.

Cloud Computing, Green Computing, Load balancing, Energy Efficient

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