Selection process approaches in live migration: A comparative study

Live virtual machine (VM) migration is defined as a technique that migrates the entire operating system (OS) and its associated applications from one host/physical server to another providing that users should not notice any interruption in their services. Live VM migration plays an important role to facilitate online maintenance, load balancing, and energy management as part of resource management. Live VM migration can be divided into two parts: 1) selection process which involves three different phases: when to trigger the migration, which VMs must be selected to be migrated, and which destination host must be chosen to move the selected VMs. 2) migration process that targets moving the VM in minimum time to avoid any interruption of services. In this paper, we present a comparative study of selection approaches used in the live VM migration technique.