Installed a new DC as a virtual machine. Ran a DcDiag and started getting errors about write Caching. Did a little research and found out that the error is actually a good thing.
Here is a link to what I found. Interesting reading.
http://www.mcbsys.com/blog/2013/10/write-cache-warnings-on-hyper-v-guest-after-kb2853952/