We have plans to move to a Dell Power Edge server running Windows Server 2016 Standard in a VMWare virtual machine with a SAN of SSD's. At that time we'll probably upgrade to FMS 16 as well.
I have not found any documentation on if this is an acceptable platform. I was told this was what we are going with and I don't have a say in it. This machine will have various other processes like Active Directory and a file server running in their own virtual machines. However a number of processors will be dedicated to running FMS.