I am interested in the two features named "Fault Tolerance" and "App High Availability" which are part of some VMware products. As far as I understand the vCenter Server instance is needed to perform administrative tasks. Therefore, a crash of the vCenter Server makes it impossible to modify certain aspects of the VMs, but the VMs still run.
I also found out that the "HA" feature still works (with some minor limitations) even when no vCenter Server is running.
Now, my questions:
What happens to a VM which is configured to use FT if the vCenter Server is offline and the host of the primary VM is offline? Ideally, FT would take care to seamlessly continue the VMs operation on the secondary host.
What happens to a VM which is configured to use App HA if the vCenter Server is offline and the app inside the VM crashes? Ideally, the app crash would be detected and depending on the configuration the app or the whole VM would be restarted.