Interface Numbering
All array models have two 10GBaseT ports (eth1, eth2). Adding additional NICs can support up to six 10GBaseT, SFP, as well as GbE ports, for a total of up to eight ports.
Adaptive Flash Fibre Channel arrays have two 10GBaseT ports (eth1 and eth2) and up to six 16Gb Fibre Channel ports (fc1 and fc2, fc5 and fc6, fc9 and fc10).
For more information on SFPs and connecting 10GbE ports to your array, see SFP Specifications.