I’ve got a RasPi 4 (4GB version). I never really put a whole lot of effort into it and just switch between SD cards as necessary.
Obviously, this is not a great solution. I was going to buy a Pi Zero 2 W for the OctoPrint so I could keep both services running simultaneously. But before I do that, I thought it would be cool if I could somehow put both services on my current device.
I’ve seen around this sub that people are running multiple services alongside Plex, but there’s not much talk about OctoPrint.
Definitely possible, it’s ideal if you’re not transcoding anything in Plex though. You should also look into klipper with fluidd or mainsail, klipper is (imo) so much better than marlin and fluidd/mainsail are even lighter-weight than octoprint!