[haswell]

It’s larger than a Mac mini because it’s meant to be a NAS, but I’ve been running FreeNAS on an HP MicroServer for almost a decade now and it’s been mostly great.

They still make products in that line although I’m not very familiar with the newer offerings.

[abrookewood]

Yep, I have one too and it must be close to 10 years old. Still chugging along running Ubuntu LTS and serving files via ZFS.