You would be better off being paid by Google, Nielsen, or other ad tracking companies.
It was paid $45 a month for years by Google to track my internet. They gave me a custom router to do it. It was all my own traffic, so I didn’t worry about shady outside traffic. Figured Google already tracked me anyways so I might as well be paid for it.
There’s lots of solutions.
Cheap:
But a full tower PC case with room for 10+ HDDs. Lot of options like those from Fractal, CoolerMaster, etc.
Enterprise (expensive):
Buy a JBOD with a backplane that you plug all your discs into then plug that into a server.