Should FMC become unavailable (say ESX has multiple failures), is it possible to deregister Firepower modules from FMC and manage them locally for the duration of the outage?
What would be the implication of doing this? Once ESX is up and running, we'd need to back-fill any policy changes I imagine. And I guess we'd need to redirect alerts somewhere else.
This is unlikely to be needed, I just need to describe the scenario.