The B1200i has 4 ethernet ports, 3 for use with iSCSI and 1 management port for the normal LAN. The management port is used so that dashboard can see the unit from other workstations/servers that connect to the LAN.
The 3 iSCSI ports can be used to connect volumes to any server/workstation with an iSCSI initiator.
Currently we do not support link aggregation on the 3 iSCSI ports, as our hardware and software cannot currently support it.