Scott Moseman wrote:
We're interesting in using multipath I/O from our Red Hat servers with our iSCSI SAN in order to have failover in the event of a switch failure. Our vendor gave me a product matrix and it says we cannot use 2 NICs under Red Hat, we must use 1 NIC and 1 HBA. I'm not finding any clear cut explanation of this in the device-mapper documentation, unless I'm missing something. Are we really required to use an HBA instead of just 1 NICs with DM?
In RHEL 5.0, that is true.In RHEL 5.1 you can now bind a session to a specific nic and multipath over the two sessions. See sectrion 5.1 in /usr/share/doc/iscsi-initiator-utils-*/README for info on how to do this.