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fieldjFlag for United Kingdom of Great Britain and Northern Ireland

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Adding a third Domain Controller to our network

We currently have two virtual Domain Controllers on our network.  We wish to add a third (physical) to give us a bit more redundancy.

Reading the various instruction guides, the process seems to be quite straight forward (run dcpromo.exe etc) but every guide I read seems to be for adding a '2nd' DC.

Is the process any different if I am adding a 3rd DC?
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It will be 2008 R2.
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The existing DC's are both Server 2008 (32bit) (NON R2)
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Miguel Angel Perez Muñoz
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Hi Miguel,

Thank you for your comment.

I believe that my colleague may have already done this in the past.  Is there a way I can check that the schema has already been modified?
Since the adprep is done, you can add this domain controller. If not, simply you get an error and can not do it.
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OK, great. Thanks
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Just one more question I think.

Is there any reason I should do this 'out of hours'?  I presume adding an additional DC will have no effect on the live environment?
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OK, thanks everyone.