Every good cluster should be failure ready. As part of testing, I've provided a checklist to run through to verify the configuration and good standing of any View HA environment.
Note that the loss of a View connection server will disconnect any connected sessions, but the View client should be able to restart the session on the other View connection server after it reconnects.
Run through each step and check whether VMware Horizon View is still working and can service new logins:
Power off each DNS server, one at a time.
Power off each DHCP server, one at a time, and check whether DHCP addresses are still being allocated.
Power off each domain controller, one at a time.
Check whether each ESXi host is configured to power on after a power loss.
Check whether the VM startup/shutdown on each ESXi host is being followed and successfully starts VMs after a power failure.
Check whether VMware HA migrates VMs onto another host after a host failure.
Check whether Active Directory...