Windows Server 2012R2 as Host and FreeNAS as VM Guest

I have searched for "virtual" and even if I see some relevant partial references I do not find any recent evaluation or description of such a contraption. (Well, this, but I have no ESXi )

THIS THREAD AND THE INFORMATION IN IT IS FREQUENTLY UPDATED SO CHECK ALL THE POSTS BEFORE DRAWING ANY CONCLUSIONS. I may write a summary eventually.

(The FreeNAS specified in my...

Windows Server 2012R2 as Host and FreeNAS as VM Guest