On October 6, between 6:45am and 3:30pm EDT there was a massive power outage in my division. Since this is just a test box in my home lab, there was only enough battery power to run this system for another two hours after the outage occurred. It powered down when its UPS reported only 5% power remaining.
Once testing is complete on the whole system (and I find a for real name for the system *hint *hint *help!) it will be moved to a colocation facility with both UPS and emergency generators.
Thanks for your help and understanding!