I’ve picked up a pair of refurbed Dell 8tb enterprise hard drives recently, and set them up in my Node 804 case in a ZFS striped mirror. Ever since, I’ve heard a lot of sound during IO that I didnt hear when I was using my single WD RED 4TB.

The sounds range from a soft knocking (I think these are normal writes) and then a bit of a brrrr (??) some other times. No clicks or grinding though.

While daily (quick) SMART reports in TrueNAS have come up clean since running these drives, I’m still a bit worried that I’ve not got enough vibration mitigation going on, or if the drives are simply omitting the necessary SMART data to diagnose a fault.

I could upload a video perhaps, but maybe I’m just paranoid!