I run my own energy monitoring business. We use many RPi's for remote customer site energy meter data collection and forwarding to our cloud based REST servers.

I run my own energy monitoring business. We use many RPi's for remote customer site energy meter data collection and forwarding to our cloud based REST servers. Once we got over the SD card issues, I have had zero problems and no hardware failures (including SD card issues) in four years now. Because of the low cost, I always install two units on every site; one is powered and idle but ready to take over if the other fails. Not hot-standby but close enough for my purposes.