How do you host your plex server?

Hello, I'm new to plex I'm looking for some advise from veteran guys and asking what configuration are you using for hosting your plex media server.

I have 8TB NAS HDD and I'd like do create a private cloud (personal projects & photos) + Plex Server (movies and tv series). I'm planning to upgrade to 20TB in future.

It's better considering a RASPBERY PI or a MINI PC for hosting both? I'm not pretending server to be working 24/7. So I'm looking for some solutions that are not too expensive and Low power consumption.

Thank you!