Green cloud computing: Datacenters power management policies and algorithms

Cloud computing is offering utility oriented IT services to users worldwide. Based on a pay per use model, it provides a variety of computing resources, enterprise applications while enabling their hosting from consumer, scientific and business domains through a three layered architecture and different cloud types. The proliferation of cloud computing has resulted in the establishment of large-scale data centers around the world containing thousands of computing nodes which consume huge amounts of energy, contributing to high operational costs and carbon footprints to the environment. Energy consumption is not only determined by hardware efficiency, but it also depends on the resource management system deployed on the infrastructure and the efficiency of applications running in the system. The challenge is addressed in finding cloud computing solutions that not only save energy for the environment but also reduce operational costs. Our Fuzzy based contribution improves power efficiency with around 40 % than other policies.