@shad0wguy I can tell you setting up nfs was the hardest bit of getting the nas to work as a storage node. I need to look back at my post to find what was the key to make it work. It was simple once I learned what was needed.
For testing I can give you some tips.
Login to your fog server. Then run this command.
sudo su -
Then find out who you are
If you are root then good. You can test your nfs mounting by
mount -t nfs <nas_ip>:/IT-Files/Images /mnt
When that mount command works then you know you have the nas nfs setup correctly. Also watch your case, you are dealing with linux which is case aware.
On the nas you need to have nfs v3 enabled. FOG doesn’t support nfs v4 yet.
I found the issue. I needed the full path of the nfs location from root rather than just the root of the share.