A Review on Live Migration Impact on Virtual Datacenter Performance

Cloud computing is the recent technology in computer environment which is provides service such as infrastructure, platform and application on the demand of user. Infrastructure resources virtualization is the mainstay of cloud computing to getting on demand services, scalability and resource pooling as the main characteristics of cloud computing. One of the main features of the live migration is datacenters virtualization. In the virtual machines hosts load balance, power saving, failure recoveries as well as dynamic resource allocation are all dependent on having live migration. The important factor of live migrations is to predict impact on the performance of the datacenter and their need to take the migration decision at the optimum times. In VMware environment there is impact of live migration on the datacenter resources network and power consumption. The overhead modeling can be used to estimate the live migration impact on the datacenter resources utilization given the VM’s and characteristics of the network. Based on the estimation the network administrator can be alerted with the approximation overhead to confirm the live migration request or to postpone it to another optimum time for minimal interruption where application is running.