Backup dns only

/var/named ;Directory containgin zone files
/etc/named.conf ;Configuration file of Nameservice

Are the above enough to backup?

Can I then just transfer them to another server ?

yes, you can test after transfer if all works

Thanks for your help . When I get the hang of it  and learn about this panel I will try to help others here

Sounds great

Thanks for your help . When I get the hang of it  and learn about this panel I will try to help others here