Here is the issue I am seeing:
I have an ESXi 5 Update 1 host that has the NFS Plugin for VAAI Installed on it. I am using VSC 4.1. Environment is NFS.
When I do the NetApp-->Provisioning and Cloning-->Create rapid clones and pick the same controller and volume on three of the VMs on the host it does the NetApp Clone and finishes in approx 2 minutes (while they are powered on). However, there is one VM on the host, that everytime I try it that way, it will do a normal VMware Clone.