Power savings in servers infrastructure under backup and availability constraints

A global challenging task is to optimize energy consumption in the field of computing, research community is not only focusing on finding ways for reduction of energy cost and maintaining profitability, but also working on reduction of environment effects of global warming. In this work, we aim to provide a mechanism for data centers with the motive of savings in power consumption by allowing servers to go into sleep mode without compromising on Quality of Services (QOS) in terms of availability and performance in terms of delay that occurs in activation from sleep mode when a job (or a request for a service) arrives at server. Our main focus is on backup servers (whose availability is high) and data recovery servers. Our objective is to propose a simple Dynamic Power Management (DPM) scheme for putting the server in sleep mode based on traffic load which resulted in significant power savings in server infrastructure of data centers. We applied a job scheduling method for backup servers, i.e., force sleep mode. We obtained results in a real time environment to evaluate the impact of our scheme.