Environment Friendly Energy Efficient Distributed Data Centers

Geographically distributed data centers form a significant technology used by the Internet users to fulfil the demand of storage, processing and large scale computations. Most of the operational cost of such data centers is due to the electricity cost, which affect both service providers and consumers. In this paper, we addressed the problem of energy consumption of data center entities and reviewed state-of-the-art solutions proposed to reduce the electricity cost. We present the full view of the problem by providing the widely used energy consumption and/or operational cost models. We identified key characteristics of efficient techniques proposed for reduction of the electricity cost, carbon emission and financial penalties in case of SLA violations. These techniques include environment friendly cost minimization, energy efficient load migration, job scheduling and resource allocation. We also identified open challenges as guidelines for future research.