Urgent need 2nd DNS for whole server

server 1 is dead , moving a lot of accounts to new server 2

server 1 (and 2 cpanel/whm) gave DNS for all sites

say ns1.server1.com

need to keep same nameservers (as server1) set up server2 to have these same nameservers as server one , with new ips , changed ips for nameservers at domain registrar 12 hours ago.

A DNS look up on nameservers still shows old ip pointing at dead server 1

Since I have several servers (does any one know) a quick way to in effect serve DNS without clients having to alter their domain registrar set nameserver names or IPs . In efffect alias the primary nameservers until they start working on the correct IPs

Thanks

 

 

 

 

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