If a VM becomes unavailable or fails in case of a disaster, you can fail over to a VM replica and quickly restore services in the production environment. When you perform failover, the VM replica takes over the role of the original VM. As a result, you have your VM up and running within a couple of minutes, and your users can access services and applications they need with minimal disruption.
Before performing failover, check prerequisites. Then use the VMware Failover wizard to fail over the VM replica.