VMware uses the vMotion technology to migrate a running virtual machine from one physical server to another physical server without incurring downtime. The migration process, also known as a hot migration, migrates running virtual machines with zero downtime, continuous service availability, and complete transaction integrity.
With vMotion, you can:
Schedule migration to occur at predetermined times and without the presence of an administrator.
Perform hardware maintenance without scheduled downtime.
Migrate virtual machines away from failing or under-performing servers.
Before using vMotion, you must:
Ensure that each host that migrates virtual machines to or from the host uses a licensed vMotion application and the vMotion is enabled.
Ensure that you have identical vSwitches. You must enable vMotion on these vSwitches.
Ensure the Port Groups are identical for vMotion.
Use a dedicated NIC to ensure the best performance.
