I'm also running a Debian-based NAS at home. If you want to expand beyond 4 drives I can recommend the 8-bay U-NAS chassis: https://www.u-nas.com/xcart/cart.php

I'm also running a Debian-based NAS at home. If you want to expand beyond 4 drives I can recommend the 8-bay U-NAS chassis: https://www.u-nas.com/xcart/cart.php?target=product&product_id=17617 https://www.u-nas.com/xcart/cart.php?target=product&product_... Same Mini-ITX form factor, 8 hot-swappable drives, pretty solid build qualtiy in my experience.