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PDC and BDC DNS

Posted on 2006-11-08
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Last Modified: 2012-06-27
I have a PDC and a BDC. I have AD and DNS installed on PDC. I have AD installed on BDC.

Do I need DNS installed on BDC also?

I'm having DNS problems!

Thanks,

Lee.
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Question by:LeeGolding
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Chris Dent earned 125 total points
ID: 17896721

Hi Lee,

PDCs and BDCs don't exist in AD you know (someone is bound to say it even if I don't), everything is equal and while the FSMO roles are more equal than others those can be very easily moved around.

Anyway, it would be a good idea to install it on your second DC as it gives you some resilience in your DNS System should the first DC go down. Provided the Zone on the first DNS Server is configured as AD Integrated then all you have to do is install the DNS Service on the second and give it a couple of minutes to replicate.

All that leaves is configuring everywhere to use it as an Alternate DNS Server in TCP/IP configuration, easy enough if you're using DHCP of course.

If you haven't already, it would be a good idea to ensure that your second DC is also a Global Catalog, that's done through AD Sites and Services, your Site, Servers, second DC then the Properties for NTDS Settings. Just tick the box.

HTH

Chris
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by:LeeGolding
ID: 17896972
Hi Chris,

I could install DNS on the BDC (second domain controller lol).

But I can't explore the PDC from BDC in windows explorer for example, or access its shares. On the BDC I'm getting netlogon problems, etc. And have some replication problems.

Would installing DNS cause any problems? I'm very tempted to demote the BDC and remove everything from the AD on PDC.


Lee.
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by:Chris Dent
ID: 17897005

It's not likely to cause any problems, but unfortunately it's not likely to resolve any. The problems in your other thread need fixing before anything here will help.

Chris
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