Reserving HA resources to support failover
When vSphere High Availability has been enabled on a vSphere cluster, the virtual machines running on the cluster are protected from a host hardware failure or a virtual machine guest operating system crash.
In the event that a host suffers a hardware failure or if ESXi crashes, the virtual machines are restarted on the surviving hosts in the cluster. Resources must be reserved in the cluster to guarantee that the required resources are available in order to restart the virtual machines.
How to do it…
Edit the settings of the vSphere cluster to enable High Availability.
Enable the HA Admission Control policy.
Select the HA Admission Control policy that should be applied to the cluster.
Define the failover settings required based on the HA Admission Control policy selected.
How it works…
VMware HA Admission Control ensures that enough physical resources are available to meet the CPU and memory reservation requirements needed to restart the virtual machines...
