Power model for virtual machine in cloud computing

Cloud computing has potentials to reduce energy consumption cost for the providers by intelligently allocating virtual machines to energy efficient servers. This paper proposes a new method to create an energy model that describes a direct relationship between resource utilization in the VM and the energy consumption by the host. With the model it is possible to estimate how much energy a server will consume if it accommodates a specific number of VMs, each with a specific resource utilization. This work also investigated the power consumption of a server when different combinations of VMs with different utilization are running on it. The result shows that the energy consumption varies non-linearly with the number of VMs allocated on that host.