I’m in touch with WD. I’ve spoken to WD support people. They told me that I need an identical HDD.
I then contacted HGST. They don’t sell HDDs directly and told me that it may be hard to find such a HDD - they don’t make them anymore . . .
I hoped that a HDD with the same exact specification, same model number and only the last digit in the P/N different, will work. It seems crazy that it is so specific. The WD support people couldn’t help me with that.
