convert the backup domain controller to primary controller windows 2008

jobby1
jobby1 used Ask the Experts™
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Steps to convert the backup domain controller to primary domain controller for windows 2008 server.

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Top Expert 2013

Commented:
You can do an upgrade but most people will add a new box and put 2008 on it and promote it.  I'd go with 2008 R2 at this point

Are you thinking about an upgrade in place or new hardware.

There is a lot of great info on this subject already so I won't rewrite the book.  

The official Microsoft document

http://www.microsoft.com/downloads/details.aspx?familyid=FA629DE2-F4DD-47AC-8D80-3DB46B2877A2&displaylang=en
 

I also really like two blog entries by MVPs on the upgrade.  One is from Meinolf the other from Sander.  

http://msmvps.com/blogs/mweber/archive/2010/02/10/upgrading-an-active-directory-domain-from-windows-server-2003-to-windows-server-2008-or-windows-server-2008-r2.aspx

http://blogs.dirteam.com/blogs/sanderberkouwer/archive/2010/05/26/transitioning-your-active-directory-to-windows-server-2008-r2.aspx

Thanks

Mike
do you want to convert your NT domain server to windows 2008???
Lee W, MVPTechnology and Business Process Advisor
Most Valuable Expert 2013

Commented:
It's not clear what you want to do...

Assuming you are properly using the terminology, then you have placed this in the wrong zone - there are PDCs or BDCs in active Directory - this should be in NT4 and in that case go to Server Manager and there should be an option to "promote" the BDC to PDC which will force the current PDC into a BDC.  

Of course, if you don't understand the terminology and your expecting Active Directory and 2008 domains to be like NT4 domains, then you cannot do what you ask.  Because what you ask doesn't apply.

In Active Directory domains, there are no backup domain controllers (BDCs) and no primary domain controllers (PDCs).  Everything is a domain controller (DC).

There are 5 FSMO roles in a single domain forest that can divided up between UP TO 5 DCs.  Typically, your first DC has all 5 of these roles.  IT usually doesn't really matter which DCs have these roles (in a single domain forest).  So if you aren't intending on completely removing the DC or the DC on which these roles are is on hardware that is failing, then there's no point in doing this.

If you do need to transfer one or more roles off the first server, then use you can follow the directions here:
http://www.petri.co.il/transferring_fsmo_roles.htm

(NOTE: you DO NOT want to SEIZE The roles unless the FSMO role holder has failed and cannot be restored).
There is no backup domain controller concept in windows 2008 (not later in windows 2000 server products), only the concept is additional domain controller, will have the same rights as like primary domain controller. Only difference is the roles as said in above answer.

If you planned to move the primary DC away, transfer the roles to new DC and do the neccessary changse in primary dc.

Role transferrign also mentioned in the above answer.

Author

Commented:
My requirement is I have a existing win 2008 std domain controller. I  need to install an additional domain controller as a backup in case the primary is crashed. So can I just install one more server with win 2008 std and run the dcpromo.exe.
Top Expert 2013

Commented:
Yes in your case if you just want to add another 2008 DC just add it as a member server and run dcpromo.  During the promotion it will be a GC by default.  If you are running DNS on your first box install DNS on this box too.

Then in also make sure your clients (static and DHCP) point to this box for secondary DNS.

Great job getting a second DC up.  Try to do this as soon as you can because right now ifyour single DC goes down you have downtime and recovery....and users notice. (important part)

With the second DC users shouldn't even notice if one DC goes down.

Thanks

Mike

Author

Commented:
I have an exchange server also i the domain. I believe the setting relayed to exchange also replicated to the new DC.
Top Expert 2013
Commented:
Exchange will also be able to use the new DC/GC.  What will get replicated on the DC are the domain, schema, configuration, and application partitions.

Author

Commented:
Transfering the roles is same as windows 2003 or any difference in windows 2008

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