That's a good tip, thanks! I have a older i7-6700K machine around here somewhere, that could work. But no ECC ram, and no idea if it draws any less power in the end. Some setup with just two drives mirrored would likely work, but feels a bit risky having no parity drive
You should look around on /r/homelab there are some nice low power consumption builds there, for example this one
https://www.reddit.com/r/homelab/comments/1935nar/homelab_na...