At the Hyper-v.nu site Hans Vredevoort has written a very important post regarding running DC’s virtualized (which I do and many of our customers), but there are things that should be aware of, so I urge you to read this, like now
/mike
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Categories: Hyper-V, Windows Server 2012, Windows Server 2012 R2
The Deployment Bunny 
I think it’s unclear if this bug applies to DCs running a D: as vSCSI where NTDS, log, SYSVOL is placed. According to the KB (http://support.microsoft.com/kb/2853952) it only mentions vIDE but Hans Vredevoort also mentions vSCSI.