If you are running an iSCSI Connection you have to install the Feature: Multipath I/O
no restart required.
Then sgo to "search" and type in MPIO
under "Discover Multi Paths" click "Add support for iSCSI devices" and "Add"
after that a reboot is required
you can see the new entry
after reboot start the iSCSI Initiator
click in the IQN you want to multichannel with MPIO
go to connect and select "enable multi-path" click on advanced
Select iSCSI Initiator and select the "second" new Network Connection (here 192.168.2.171) and select the Target portal IP---click OK
under devices in the iSCSI initiator you should see 2 Adresses, click in MPIO
You shoul see 2 paths.
Start a copy job. Now both iscsi NIC are in use.