Secondary/Backup Cpanel Server

Hi,<br><br>I have one dedicated server with Cpanel running around 150 sites. I have purchased one more server with cpanel mainly as back up server.&nbsp;<br><br>Please advice with any old thread or sharing your&nbsp;experiences, &nbsp;how can i use the second server as secondary DNS server, email/sql/apache back up server. I have already copied all the contents from the first server to there. But I confused if I am changing the IP details of all sites in the secondary server to match with that of primary server whether it may affect the DNS lookups ?<br><br>thanks,<br><br>-Navas