Servers shouldn't communicate in the LAN with the SAN. The SAN should be on its own isolated (and dedicated) switches or VLANs. Each server then uses at least 1 NIC in that switch or VLAN and it is assigned an IP address on the iSCSI subnet. For redundant setups, you would use 2 switches or 2 vlans across 2 switches (so that if 1 switch fails, iSCSI traffic continues via the other switch). When using just 1 switch or VLAN, only use port 0 from each controller (ports 0 from the 2 controllers will share the same subnet (but obviously have a different IP address).
Hi, If the second ISCSI port of a dell MD3000i conneccted to a switch and has IP in the same IP reng  (10.0.10.0) of other servers that are connected to the same switch, would the disks in the device be availble (through ISCSI inititor) to any of the servers that are connected to that switch? is this correct? becuse right now one of the ISCSI ports of SAN is connected directly to NIC of one of the servers and the ISCSI port and the NIC of the server is configured with ip address of 192.168.8.0 but the rest of the servers in the domain is configured with IP reng 10.0.10.0, so any other servers has direct access to the SAN. Also how can we change the IP address of the second ISCSI port Thanks
ISCSI port question