What makes a hard drive ReadyNAS compatible?

I have owned several ReadNAS boxes (RN600, three NV+, and a Ultra 6 Plus) and have had nothing but success installing and running these units 7X24 in a home and small business environment. I recently fired up my third NV+ and decided to use some WD Black 1TB drives (WD1002FAEX) I had and to my surprise it really did not like them. I knew they were not on the HCL but figured that they were solid drives especially since they had a 5 year warranty. After spending a bit of time trying to get them to work I decided to test them with the WD diagnostics and found one drive failed the SMART test and the other was so dead it could not even be seen by the diagnostic program. These were brand new (never used) so I'm getting warranty replacements from WD but have two more of these drives that are brand new and test OK but I'm afraid that the NV+ is somehow corrupting them.

First of all, is it possible that the NV+ is corrupting the drives and secondly, what makes a drive get on the HCL. Also, is there an HCL failure list bcause I think this would help steer people away from certain drives.