I am a client who is building SQL 2012 availability groups as per link below
So far the installation of cluster feature on 3 nodes and the cluster setup has been completed successfully.
However, the client cannot add disks to the cluster… I see them, I can online them and control them via disk manager etc., just not in the cluster.
Windows 2012 R2 OS for all the VMs
Virtual machines residing on a vPshere 5.5 host
SQL 2014 enterprise edition