Power and QoS Aware Virtual Machine Consolidation in Green Cloud Data Center

Cloud computing is a technological way of managing large numbers of highly virtualized resources in such a way that they resemble a single large resource from management perspective. The cloud computing model—made promising by complicated automation, provisioning and virtualization technologies. Such shifts to the computational demands results in greater power consumption, increased operational costs and high carbon emissions to environment. The challenge for the Cloud Provider to deal with necessary requirement of power-performance trade-off by satisfying high Quality of Service (QoS) and Service Level Agreements (SLA) requirements while maximizing their profits. The issue of energy efficient utilization of resources is also important for Cloud entities to decide on the cloud service provider that can comply with SLA parameters. Dynamic VM consolidation includes efficient determination of overload and under-loaded hosts, so that effective decisions like migration of VMs to other hosts, can be taken to optimize the power. In this paper, Energy-Efficient VM Consolidation Policies which meets SLAs and QoS expectations are explored and propose a novel: SLA and Energy Aware policy for Dynamic Virtual Machines Consolidation in Cloud data centers is evaluated.