A Study of Energy Efficiency Techniques in Cloud Computing

Cloud computing is an evolving paradigm that redefines the way in which Information based Technology services are being offered. Cloud Computing has created a new era in the IT industry, offering businesses and individuals technical and economical benefits, such as utilising computing resources through virtualisation and user paying only for what it uses. In cloud-based computing, the applications run on servers in the data center. These data centers contributing to high operational costs by consume huge amounts of energy and that leads to carbon footprints in the environment. So there is focus on energy consumption in data centers in cloud computing. In our study we discuss various energy efficiency techniques in cloud computing i.e DVFS, VM Consolidation, Resource throttling and DCD. A theoretical comparative study of all these energy efficiency approaches in cloud computing is done and this study shows that all these approaches are used with the goal to reduce the energy consumption and maximization of performance in the cloud computing. Keywords— Cloud Computing, Virtualisation, Virtual Machine, Work load, Energy Efficiency, Energy Efficiency Approaches