What is the best practice for configuring a Domain Controller's adapter DNS settings?
We have an MPLS network with 6 DC's located in different locations.
HQ - DC1 & DC2
WH - DC3
Branch - DC4
Cloud - DC5
Colo - DC6
My thoughts were to use the DC's IP address as the primary and one of the other DC's as secondary.
Thoughts?
Thanks!
Answer
Unfortunately this is a controversial subject so there is no one authoritative answer.
I personally would use another DC as the primary DNS server, and the DC's own IP address as secondary. Ideally the primary DNS would be in the same physical location as the DC.
In network configurations where some DC's may be inaccessible to others (firewalls), if using the DC as itself for primary may result in significant startup delays. More on that and other useful information here:
Troubleshoot DNS Event ID 4013: The DNS server was unable to load AD integrated DNS zones
http://support.microsoft.com/kb/2001093
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