As I have 1gbps symmetric connection I serve some API right from my basement. One API in particular has no problems serving hundreds of requests per second from

As I have 1gbps symmetric connection I serve some API right from my basement. One API in particular has no problems serving hundreds of requests per second from the NUC with the exact parameters you just mentioned. As for backup I use 2 things: Internal scheduled backup to hard drives that will be physically disconnected most of the time. Standby redundant synchronized server deployed somewhere else for peanuts. It is not as performant as said NUC but will do while the emergency is fixed on main one.