WD3000FYYZ not suitable for 6+ bay NAS?

http://www.wdc.com/en/products/products.aspx?id=810

with 12bay NAS, should I be concerned about the part where it says

Specifically designed and tested for small office and home office, 1-5 bay NAS
systems and PCs with RAID.

Hello,

I wont say that you should be concerned about that. However, we are not able to confirm for you if it will work 100% on a 12bay NAS.

As the documentation says is designed for small office 1-5bay NAS meaning that they were not tested on a 6+bay NAS.

As a recommendation, you can try that but please note that they might or might not work on a 6+bay NAS