Pro 6 Long in the tooth vs. Bleeding Edge Gums

I too am a long time Seagate user, but not specifically because of the warranty, but because of the past reliability I had experienced. My first Seagates that were installed in a X-Raid configuration were in my NV+ some 5 years ago. I lost one of the two drives within the first month and replaced it. I had no more problems with them until I upgraded the drives almost two years ago with 1TB drives. I also added an NVX and then a second and all the drives have been in service in those two units until a year ago. I have to date suffered a 40% failure rate, so when I added 3TB drives to the mix, I went with Hitachi. They seemed to have good reports on the forums, and indeed they have operated for almost a year now without incident. I did buy a spare which is still in it's original sealed anti-static envelope in it's original box.

Just because a drive model you want to use is not on the list it does not mean it has not been tested. In fact, since it has been tested and approved for the ARM processor, and has been on that list for some time, would indicate to me that there could be a problem with them on the x-86. Considering the intermittent problems with the ST2000DL003 on the x-86 platform, especially when used with Mac's on the network, they are most likely being extra cautious, or there are problems. You can use unapproved drives, and some users have. You may not have problems, but then again, you might.