for all you VMware fans out there, and a Cautionary Tale! (why not to use vCenter Server for Windows), and keep continually upgrading as each version of vCenter Server comes out, at a client site, where they've been using Windows Server 2012 to Host vCenter Server, and have resisted heavily to use VCSA. (Linux Appliance). They upgraded from 5.0 to 5.5, and then 5.5 to 6.0 (which caused many days of issues).
Now just trying to upgrade from 6.0e to 6.0h, has caused VMware Support a headache, trying to get this to go... and it's now been over 1 week, trying to get this to function!!!!