Check my posts.
According to WD support you must have the exact same HDD.
I’m extremely disappointed and will never buy or recommend WD again. I’ve had other NAS systems and never had such problems. The fact that you can’t replace a HDD with a similar one - with the exact same model number is simply crazy.
Basically, WD NAS products only work until one HDD fails (because you can’t get a replacement HDD - they don’t make them anymore . . .) Terrible. And they admit it.
This is an official answer from WD: “Sadly, as both the My Book Live Duo and the Hitachi drive in there are end-of-life products, your best option would be to contact the place of purchase to replace the My Book as a whole and not just one drive.”
So I bought an 8TB system and two years later it’s a nice looking brick. Thanks WD.
