I recently upgraded my home-NAS from a Fractal Define R4 to a Define 7 XL. The R4 had the rubber grommets, but hot-swappable trays that were just held in by spr

I recently upgraded my home-NAS from a Fractal Define R4 to a Define 7 XL. The R4 had the rubber grommets, but hot-swappable trays that were just held in by spring force. As such they rattled a lot. The Define 7 has the same grommet system, but the trays can be fastened by screws to the support rails. The difference in noise was significant. Even though I went from 6 to 10 disks it's much more quiet now.