We have a Netapp 2020 with an active/active configuration. We have a 3 node Hyper-V in a Failover Cluster. I have 2 physical NICs on each node dedicated to the "iscsi subnet" of 10.0.1.x. Our Netapp has 2 controllers 10.0.1.11 & 10.0.1.12 that is in a Load Balanced Pair which is channeled on the switch. I have mpio installed and running on each node. The MPIO is setup correctly, as far as I know, but we did some network testing today and there is only one active NIC on each node for iSCSI. In the cluster networks section of the Failover Cluster, the 10.0.1.0/24 subnet only has 3 NICs instead of 6, but I'm assuming that's by design. I've only been working with failover clusters for 9 months so obviously I could be missing something. So although the MPIO is setup to see the NETAPP LUN disks, it's only using 1 of 2 NICs on each node. If anybody could shed some light on this, it would be appreciated.