I’ve now had three of my WDC 4TB drives fail. Thankfully they are in a ZFS 3 way mirror and they have failed one at a time.

I’ve ended up replacing them with exactly the same model each time, purely because I’ve been stung in the past buying another xTB drive just to discover it is a tiny bit smaller tan my other xTB drives and so can’t be added to the array !

All the failures have been basically the same, drives just don’t appear in the SATA bus anymore.