Proper setup of DNS when there are multiple DNS servers.

Hello,

We have 3 current domain controllers:

Server-2003
Server-2008
Server-2012

I am ready to remove Server-2003.  However, I need to reconfigure IP settings for DNS on the remaining servers to reflect this pending change.  I would like some input on what the preferred setup should be.  

Current DNS settings

Server-2003
Preferred DNS Server: Local Host
Alternate DNS Server: Server-2008

Server-2008
Preferred DNS: Server-2003
Alternate DNS: Local Host

Server-2012
Preferred DNS: Server-2008
Alternate DNS: Server-2003

Thank you in advance.

Regards,
Real-Time
realtimerAsked:
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Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
In your case, the two remaining DCs should have primary DNS IP set to their local address and secondary DNS server to the other DC.

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realtimerAuthor Commented:
Great.  Thanks.
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Windows Server 2008

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