Had a power cut last night, my main computer was fine as it's behind a UPS...and network stayed up as well as that's also behind ups.
But my openhab machine is now a gigabyte brix hooked to the tv (it was my htpc). It's uses a laptop style ac adpater for power - I think 12v output.
But is there such a thing as a power brick that contains a bit of a battery that could take up the slack when there's no power?
Of course I could swap out the brix for an old laptop and it would work as I'd want, stay on for 30 mins or so on battery till the power comes back on.