What's the best way run nodes that can be easily replicated, imported to and exp

I run an online gambling website that lets users send bitcoin to addresses I generate for them (on a node server, interacting over the REST API of Bitcoin Core).

My concern is, if my production node server fails for some reason, I will have to set up a new node and *import the wallet data into it*.

But even if I keep a few spare nodes running and waiting around, I need to be able to transfer wallet data from the main node server to them, easily and quickly.

I'm aware it's possible to run servers in `prune` mode, but when I tried to export and then import on a new node, I got an error saying import isn't supported on prune mode. Is it somehow possible to still import wallet data into a node running in prune mode?

Would love your insights and suggestions on this. Thanks!