Western Digital 3TB WD30EFRX (pictured above). Whilst fully functioning, the drives are not in the best condition. They turn on and function as they should, but SMART data is unhappy with the number of Read Errors/Reallocated Sectors.
This product was Ok, I replaced 2 units already cannot really say are 5 stars but in general ok.
It is quiet, not really fast as I see, 5200rpm perhaps.
Reliable ? I am not sure, I replaced 2 units in 5 years' time, in my 4-bay NAS.
I think this product is Ok, not super, and cannot just much as I don't have other similar numbers of HDD to compare.