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Replicating Domain Controllers and backups

Posted on 2007-03-30
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Last Modified: 2010-03-17
We are moving to a virtualised environment and have created a 3rd Domain Controller in our Domain.  If the existing domain controllers are being backed up, presumably I don't need to backup the 3rd DC do I?  (assuming that replication is working)

Of the 2 existing DCs, one has all of the FSMO roles including GC.
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Question by:ddh76
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by:Chris Dent
ID: 18822154

Technically no you don't.

However, it would seem sensible to run a system state backup "just in case".

Chris
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by:ddh76
ID: 18835165
So if we had to do a restore, would I just use the FSMO Master's backup and perform it authoritatively?
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Chris Dent earned 500 total points
ID: 18835302

Well it depends.

If you lose the master DC, and you have the others operating just fine I wouldn't bother with a restore at all, just clear out the dead DC using:

http://support.microsoft.com/default.aspx?scid=kb;en-us;216498

Then rebuild a new DC.

If you need to restore individual items then yes, you would boot into DS Restore Mode and perform an authoritative restore of the missing object.

Things do changes slightly if you're running Exchange on one of those DCs.

Whatever happens you should still maintain backups of the System State.

Chris
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