One main server, with backup servers being very easy to get up and running, either by full-restoring the backup, or installing and restoring specific services. As everything’s backed up to a Hetzner Storage Box, I can always restore it (if I have my USB sticks with the keyfiles).

I don’t really see the need for multiple running hosts, apart from:

• Router
• Workstation which has a 1070 in it, if I need a GPU for something. My 1U server only has space for a low profile and one slot GPU/HPC processor, and one of those would cost way more than its value over my old 1070 would be.