Device 'New SCSI controller' is a SCSI controller engaged in bus-sharing.
One of those "Dooh..." moments. I'm creating a SQL cluster in my Lab with a file share witness and was trying to add the RDM shared disks. I kept running into a configuration error listed above and as this was my lab tried a few things to get around it. Turns out I had taken a snapshot of both VMs so I could roll back changes and even though this was on the OS drive attached to the default SCSI controller and I was adding a second SCSI Controller to connect the RDMs to with bus sharing enabled, it blocked me from adding it.
It didn't say anything about snapshots, which is why it took me a while to figure out if it was a 6.5 gui issue or something else!
The annoying error:
This might save someone else a few minutes via Google!
