What is VM Migration Process

  • Migration process is the mechanism by which, virtual machine’s memory pages and states are transferred to a destination physical machine. Different virualization technique, use different migration mechanism.
  • For example, XEN iteratively copies the modified memory pages to the destination until a maximum number. Migration process uses network i/o for sending and receiving the data, both in source and destination machines. This causes increase in resource utilization on both the machines. Depending upon the source and target configuration, migration process can take different time.