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Backup Domain Controller

Hi there,

I want to add a Windows Server 2008 R2 as Back-Up Domain Controller to a Domain which has a Windows Server 2003 R2 as Primary Domain Controller.I've all the FSMO roles on this single 2003 primary domain controller.
So when I'm trying to prepare this Existing 32-bit Windows Server 2003 Domain Controller for the setup, and when I issue an "adprep32 /forestprep" command, I'm getting the error
" Forest-wide information has already been updated.
[Status/Consequence]
Adprep did not attempt to rerun this operation "

And the same happens when I issue an "adprep32 /domainprep" command,that is Im getting the following error
" Domain-wide information has already been updated.
[Status/Consequence]
Adprep did not attempt to rerun this operation

How can I fix this please ?

Thanks,
Clement

Clement P

ASKER

Sorry the primary DC is a Microsoft Windows Server 2003 for Small Business Server with SP2 server
.

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Seth Simmons

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SOLUTION

Lee W, MVP

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Clement P

ASKER

Thank you both.

I successfully installed a New Backup DC on 2008 R2.
However I've couple of questions please.

1) My Primary DC is 192.168.10.2 - I've my primary DNS, DHCP running on this
So now I've New 2nd Domain Controller in the Domain as 192.168.10.8 and for this the preferred DNS server would be 192.168.10.8 and Secondary as 192.168.10.2 ...isn't it ?

Also 2) How should I Configure DHCP on this New Back-up DC for Failover please ?

Thanks,
Clement

SOLUTION

Lee W, MVP

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Clement P

ASKER

Ah okay.

So with regards to DHCP - Splitting the scope is the only option ? Because lets say if my primary DC goes down and the BDC kicks in and authenticates users however it would through a new set of ips isnt it ? I man the PC which was getting an IP as 192.168.10.100 from PDC, may get a new one from the BDC ? Isnt it ?
Is there any solution where the IP's remain same irrespective of PDC or BDC running please?

Thanks

SOLUTION

Lee W, MVP

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