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