I am not seeing any useful information using the Admin GUI. What is the Linux file name that can be edited? EMC support edited that file before I started supporting Avamar.
That is in the main or utility node.
I had to also change DNS which is resolv.conf on all nodes.
If you change DNS servers such as in isolation for a DR test , you must change in all nodes for resolution during restores or you will only get 1 node and slow restores.