I spoke with Dell Support and the solution was to delete and re-create the Host in MDSM.
I am adding a MD3600i (with MD1200 expansion) to a new Windows 2012 File Server Cluster.  I have the Array connected and configured up tot he point of creating Virtual Disks.  When I attempt to create a disk, the "Working" spinner pops up and then disappears almost instantly.  The wizard never loads. - I have tried MDSM from the Resource Disk versions 4, 5, and 6 - no change. - I have removed and re-added the array multiple times. - I have updated to the most recent Controller Firmware. - I have tried both In-Band and Out-of-Band management connections. - I have tried with both Pools and Groups. - Out-of-band management stations have been both Windows 7 and 8.1 When running the Create a Pool wizard, I can create equally sized Virtual Disks at the end of the process but i cannot create additional drives in the remaining free space (more than enough available to accommodate a drive)..  I need to be able to create Drives as needed, please help!
MD3600i Virtual Disk creation issue