Bee-link and GMK make some tiny computers purposely designed to be home servers. I thankfully got a ME mini NAS before the LLM apocalypse and it is a beast that can expand up to 24TB. It comes with an Intel N150 that runs all my personal services and consumes almost no power at all. But they also make other smaller models (the ME mini is already minuscule for what it does) that can fit 2 M.2 disks and they all have their own power supply and ethernet connection. The only problem is that the prices have skyrocketed because RAM and solid state storage starvation.