True. Have a setup running on Kubernetes with their helm chart but the documentation is (or at least was) insufficient on what is important to back up, so I had to start over once, learning the hard way that the config file contains the one string you always need for recovering data. Since then, it is pretty stable and I had almost no problems.
I don’t see anyone mentioning sth power efficient yet, so I will throw my two cents in here; I just ordered an Odroid M1S to take over some jobs from my RPi4 (8GB). Has not yet arrived so I cannot praise it yet but might be worth a look!