I have a UPS on my structured media panel with "critical" items plugged in (DTV swim power supply, router, switch, RPi, etc). I have the USB from the PSU plugged into the RPI so that if it gets low due to a long outage, the RPi will shut down rather than hard power cycle. I haven't confirmed functionality recently (dumb), but it was working great last year when tested. I have 2 backup cards sitting next to the RPi, but I don't know if they are the current config (also dumb). When I get the RPi3 configured correctly, I'll have a backup microSD in a USB adapter and it will have a scheduled backup so if the main card fails, I'll have a live backup ready to go. I also intend to have a second card next to the setup so in case the backup is fried, I have a secondary. MicroSD is so cheap for 8-16GB cards, not having a handful sitting there ready to go is really silly.