Where are the external drives living? Hard drive make their own noise. Might consider going with solid state if you want silence.
One example of this that’s making the rounds: https://www.asustor.com/en/product/FS67
pbronez
joined 1 year ago
40 HDD is a lot.
Check out 45 Drives. They have a homelab focused offering that has 15 bays https://45homelab.com/#product
To get 40 hard drives, you’d be looking at something like their Storinator S45 https://www.45drives.com/products/storinator-s45-configurations.php