Current best practice for Time service settings for Hyper-V 2012 R2 Host and guest OS's

Question

I am trying to find out what the current best practice is for Time service settings in a Hyper-V 2012 environment. I find conflicting information. Can anyone point me in the right direction. I have found some different sources (links below) but again the
are not consistent. Thanks
http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/11/19/time-synchronization-in-hyper-v.aspx
http://technet.microsoft.com/en-us/library/virtual_active_directory_domain_controller_virtualization_hyperv(v=ws.10).aspx
http://social.technet.microsoft.com/wiki/contents/articles/12709.time-services-for-a-domain-controller-on-hyper-v.aspx

Answer 1

From the first link provided by Brian, it does state that the time service should be off, but then the update changes that statement.  Still best to rely on the first link in the OP - it was written by the guy that has been responsible for much of what
gets coded into Hyper-V, starting from before there ever was a Hyper-V.  I'd say that's a pretty reliable source. 
Time service
For virtual machines that are configured as domain controllers, it is recommended that you disable time synchronization between the host system and guest operating system acting as a domain controller. This enables your guest domain controller to synchronize
time from the domain hierarchy.
To disable the Hyper-V time synchronization provider, shut down the VM and clear the Time synchronization check box under Integration Services.
Note
This guidance has been recently updated to reflect the current recommendation to synchronize time for the guest domain controller from only the domain hierarchy, rather than the previous recommendation to partially disable time synchronization between the
host system and guest domain controller.
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