Dell R310 not finding TL2000 over fibre

I've been asked to connect a PowerVault TL2000 to a PowerEdge R310 and I've hit a bit of a brick wall with it.

I've installed the install_nonexclusive drivers and rebooted both devices. I've tried crossing the fiber over as I'm connecting directly from the server to the storage. Whatever I do the tape library just doesn't appear in device manager.

In Device Manager, the fibre cards in the R310 are showing as 'Broadcom NetXtreme Gigabit Fibre' adaptors, in the Network Adaptors section. Should these work? I would have expected them to show as Storage Adaptors rather than Network Adaptors?

We are currently trying to connect via a Brocade 300 switch instead of directly, to see if that makes any difference.

Anyone have any ideas?

Thanks