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How to create a backup or secondary domain controller

I have a Brand new server 2008 standard and a server 2003 sbs which is my domain controller. I want to create a backup controller on the 2008 machine just in case my 2003 goes out. Can this be done?
2 Solutions
Alan HardistyCo-OwnerCommented:
Just install Active Directory to the 2008 server as part of your existing domain and you will have your secondary domain controller.
FYI - PDC's and BDC's are no longer.
Lee W, MVPTechnology and Business Process AdvisorCommented:
You'll have to run ADPREP on the SBS server using the adprep command from the 2008 DVD.  For additional information, see:
http://www.petri.co.il/windows-server-2008-adprep.htm (Applies to SBS as well).  The only thing you cannot do is move the FSMO roles off the SBS server - they MUST be held by the SBS server
yep, this is fine. Go through the installtion process to setup the new server as a 2008 server. before you promote it to a DC you'll need to run the adprep command on the SBS to prepare the domain and forest (no big deal)
Otherwise theres no reason these two servers wont be friends as long as the SBS server is in charge.
cnl83Author Commented:
I will give this a try and report back this weekend.
QlemoBatchelor and DeveloperCommented:
This question has been classified as abandoned and is being closed as part of the Cleanup Program.  See my comment at the end of the question for more details.
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