I think it's one of those things you have to get right the first time, otherwise you're stuck in the hell of "i can't touch the network because the entire cluster will hard crash and take 25 minutes to come back online and God I hope no disks were corrupted" My UPSs are getting kind of old and sometimes brown-outs don't trip fast enough, I had an issue where a quick power loss tripped up my main switch and looking at the logs 3/5 nodes lost quorum and the whole cluster hard crashed and hardware reset. I lost 3 VMs in the process I had to restore from backup. Took almost 2 hours to recover at 3 am XD