Does a UPS, or two, save you from brownout? I suppose so... at first. I thought another possible issue would be, wall power isn't conditioned, UPS output is conditioned, but a set up that notionally connects wall power on one PSU with UPS conditioned power on the other PSU makes trouble. And if the power actually is off, then it could come back on with wall power at opposite phase to the UPS's phase...?
Biting the hand that feeds IT
