70 DC's on 2008 R2 upgrading to Server 2012 R2

Hi experts

i am about to update the domain functionality by introducing my first server 2012 R2 domain controller.  I have a concern with the number of DC's in our environment would it have any problems?  has anyone ever made a similar upgrade witht he number of DC's?  are there any gothcyas i should be looking for?  

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David Johnson, CD, MVPOwnerCommented:
I have a concern with the number of DC's in our environment would it have any problems? if your replication is healthy then it isn't a problem

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johnkesoglouAuthor Commented:

i downloaded this as well.  thank you for your input.
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Windows Server 2012

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