I am going to be building a new virtual server for Exchange 2013. All the servers currently in our environment - including DCs - are 2008 R2 (except for a few 2003s which we are gradually phasing out). I was wondering if any of you have a recommendation as to which Windows Server OS would be best to use: 2008 R2 or 2012? I am really not that familiar with 2012 yet. I am much more comfortable with 2008 R2, but I know I will have to move beyond it at some point. So if there are advantages to 2012 over 2008, I will definitely consider it.
Thanks in advance for any advice.