be default VMware HA only protect VMs against a total host failure. If a host lost access to its shared storage HA doenst kick in.
But.... with vSphere 6.0 it comes with HA for Components. HA now can react to APD,PDL and can restart VMs. You have to enable/configure it because its disabled by default. You only can configure it when you use the WebClient and not the old C# Windows Client.