How can I backup VNX File using NetWorker and an FC tape library

I've a VNX Unifed array which has a tape library zoned and configured to it over an FC fabric. I currently use an aging backup utility to dump directly from the VNX File straight to the tape library. I want to start using our NetWorker install to run and store the backups from the VNX instead.

I've got NetWorker 9.1.1.5 installed with a VM as an NMC and I have a remote storage node which has ethernet and FC connectivity.

Please do not give me a link to the NDMP document it's pretty useless. EMC support haven't been able to help me either. This surely must be possible?