I spent a few hours today proposing a new offering to a customer who is looking to migrate their SAN environment from 16G SAN Directors to the new gen7 64G SAN. Customer already uses 112 active ports and G730 (IBM SAN128B-7) is nicely fitted. But it's only 96 x SFP+ and additional SFP-DD ports. I tried to figure out how I could connect these new SFP-DDs to my devices.

Brocade Gen7 San switches (G720 & G730) uses SFP-DD (Double Density) transceivers for additional connectivity.
G720: 64 ports
48 x 64G SFP+ 
8 x 128G SFP-DD ports  (with SN-LC cables 16 x 64G additional device connectivity)

G730: 128 ports
96 x 64G SFP+ 
16 x 128G SFP-DD ports (with SN-LC cables 32 x 64G additional device connectivity)
 
There was QSFP in Gen6 32G and it was easy to use these ports with QSFP to LC (4 LC) break out cable.
With Gen7 SFP-DD we have new connector called Senko Connector (SN). 
And we need new SN-to-LC cables for device connectivity. Unfortunately this new cables not come with the switch configuration. You can find it online.


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