I use this for my hot swappable NAS at home.
https://www.startech.com/en-ca/hdd/satsasbp425
Have it in an old Bitfenix Prodigy, works like a charm.
Yeah, I went with an istar itx case or something similar with tons of 3.5'' slots for 2-3 hot swap bays. Roughly 10-12 drives capable.