If the system that you clicked in the inventory view of the vSphere Client GUI to launch the Veritas High Availability tab is not part of the list of failover target systems for that application, the Add Failover System link is dimmed. (2932281)

Workaround: In the vSphere Client GUI inventory view, to launch the Veritas High Availability tab, click a system from the existing list of failover target systems for the application. The Add Failover System link that appears in the drop-down list if you click More, is no longer dimmed.