Yeah I’m pretty sure a raspi 4 is up to the task. I ran a 512 GB jellyfin server on a raspi 3 for a few months, and the only issue was with transcoding video/audio (raspi doesn’t have the right hardware acceleration for that).

Never used nextcloud, but yeah you’ll probably want to update to 64-bit raspi os

“up to” being the key word here.

But seriously, AI is so power hungry, I’ve heard plans of water-cooling the fucking traces on the motherboards of high-power server racks

I use both, since they do different stuff. I actually remote into my servers with wireguard, but I like to install tailscale as well as a backup. Since each device gets a unique tailnet ip, I can usually still connect even if I’ve fucked up some network config that breaks wireguard. ((If this is a security risk, someone let me know because I have no clue what I’m doing tbh.))

Plus tailscale lets you easily see what devices are connected to the internet at a given time.

Raspbian (modified Debian Jesse) on a raspberry pi 2B (which I am still using over a decade later to host some discord bots). Also now using Debian 1Bookworm on an old optiplex as a media server.