Like Andrew said, the DD Appliance won't work with ndmpcopy, but can be an ndmp target using ndmp backup software. Most NetApp/DD integration is done by FC attaching the two appliances (VTL, not NFS on the DD...so it works as virtual tape). It would work as nfs too, but in my experience I see VTL typically and it works well. If you don't have a free FC port on the 2050, then you would need to add an HBA to the 2050 or ndmp over the network.