I purchased similar HGST drives off of ebay, the seller did not realize that they were from an enterprise datacenter raid array and when they got to me they were recognized by my LSI raid controller however the controller could do nothing with them. I tried multiple controllers (make and models) with the same result. The sellers IT guys said, "they must be encrypted", I said.... "it is the firmware"... end result, I shipped them back, they tried to get them working on could not so I was offered a full refund (minus the shipping I paid to receive the items and send them back cross border us/canada). I even reached out to HGST/WD support and they could not offer me any OEM firmware and confirmed that it was a custom firmware on the drive.
Short and sweet, its not worth the risk IMO