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Backing up/Restoring Windows Server 2008 Active Directory

Posted on 2009-05-14
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Hello,

I have 4 Windows Server 2008 Domain Controllers (all the same Hardware/HP Proliant Server) on my single Domain network.  I read the Microsoft Technet article (http://technet.microsoft.com/en-us/library/cc816584.aspx) about Backing Up Active Directory Domain Service, but I wanted to ask the experts if this was necessary since I have 4 Domain Controllers that replicate with each other.

I have three quick questions:

#1:  What would be the best practice with Backing up these Domain Controllers, and how would you have it set up.

#2:  Also, lets say that one of the Domain Controllers crashed, how would I get it back up and running?  Would I use the backup I created from the Technet article, or would I start from scratch, then have that server rejoin the domain and replicate with the other Domain Controllers?

#3:   What if the Domain controller that held all of the roles crashed, what would be the best way to get him back online.

I would just like to know what is the quickest, safest, and easiest way to get a Domain Controller back online after it has crashed.

Thank you!


Randy
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Question by:rgutwein
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Mike Kline earned 500 total points
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#1  Backing up at least one DC gives you what you need but I'd at least backup up two of them.   Where I am we have 20 DCs and we backup the 4 DCs in our hub site
If you backup all 4 that is ok too but you don't need to
#2  You could do either although it is easier just to rebuild and let AD replicate.  If you need to restore an object you would do an authoritative restore.
#3 - If it crashed and you couldn't bring him back you could seize the roles http://support.microsoft.com/kb/255504  and then do a metadata cleanup on it http://support.microsoft.com/kb/216498   Then you can rebuild (similar to #2)
You could also try a restore.
Thanks
Mike
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by:Mike Kline
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Caveat to #2 about the authoritative restore.  Since you are at 2008 soon R2 will be out and you also can use the recycle bin option for object restores (you have to be at Windows 2008 forest functional level)
 
http://technet.microsoft.com/en-us/library/dd392261.aspx
 Thanks
Mike
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by:rgutwein
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Thank you so much!
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