With my new server I bought a UPS, partly just as a Good Thing, but also because I suspect a powercut fried the motherboard on a previous machine that I had, and this baby is too precious to lose ;) The idea is that the UPS will smooth out the power supply to my server, protecting it from surges or temporarily blips in power loss. If there’s a proper power cut, the UPS is connected to my server and can initiate a graceful shutdown instead of system crash.