Fri Apr 30, 2021 8:00 pm
This will depend on how the system is configured. All my dual power supply systems are set to share the load across both power supplies, in which case it draws half the power from each supply. So, if it is using 250W, it will draw 125W from each power supply, and hence from each of your UPSes.
There is no real need for a UPS on both power supplies, or to plug the power supplies into separate UPSes. That will come down to how much you are chasing reliability.
--SS