yeah, those are too big. was hoping to score an ITX-sized abandonware for cheap and retrofit it with a 10 TB or so drive. I had this thing many moons ago:
it could fit a drive, with some wiggling and swearing. so I figured maybe something similar exists. building it from new parts is way, way out of budget.
edit: this is how it ran for close to a year.
they are widely available and cheap.