What sort of maintenance needs to be performed?
Periodically testing the UPS’s and their failure modes. A good time to do this would be right after a periodic backup. Low User input and you’ve got full backups of the machines. Functioning of the circuit breaker with the UPS on it to simulate and outage and see how the transition goes. Most UPS vendors suggest that testing an UPS by pulling the plug from the wall is NOT a good idea. UPS units like to have a good idea of what ground looks like. Though it is unlikely that unplugging an UPS for a short amount of time would be dangerous, but in any case, throwing a circuit breaker is the better thing to do. Note: It might be useful to install a GFI (Ground Fault Interrupter) socket to facilitate this testing without having to pull the plug, especially if you don’t have your UPS protected machines on an isolated circuit (which you probably should). Most UPS units use sealed lead-acid batteries and do not have a battery memory hence they should be run dry as few times as possible. Note: de
