It is essential to ensure the availability of not just your virtual machine workloads but also your vSphere infrastructure components. VMware offers three availability solutions—vSphere HA, vCenter HA, and VMware FT.
vSphere HA, when configured on a cluster, enables the cluster to respond to an unplanned downtime event and ensures the availability of the virtual machines that were running on them, with the minimal amount of downtime possible. There is much more to what vSphere HA can do in terms of providing high availability to the virtual machines that run on the HA protected hosts. It can monitor the guest operating systems and applications running inside a virtual machine and then decide to restart the affected virtual machine in an effort to reduce the downtime of service due to an affected guest operating system...