@Wayne-Workman Here is what I have… I have an internal RAID array mounted to /images.  Then I have the SAN mounted to /images/archive.  (I did this because I thought it would be more friendly to FOG that way.)  I can certainly remount the SAN to a different folder and give that a try.  (I had had that thought as well.)
Here is what I have in my /etc/exports file:
/images					*(ro,sync,no_wdelay,no_subtree_check,insecure_locks,no_root_squash,insecure,fsid=0)
/images/dev				*(rw,async,no_wdelay,no_subtree_check,no_root_squash,insecure,fsid=1)
/images/archive			*(ro,sync,no_wdelay,no_subtree_check,insecure_locks,no_root_squash,insecure,fsid=2)
/images/archive/dev		*(rw,async,no_wdelay,no_subtree_check,no_root_squash,insecure,fsid=3)