[captain_blie]

MPIO support for load balancing is not available at this time (to my knowledge). Although we are looking forward to it.

Here is a snipit from
/techsupport.services.ibm.com/server/vios/documentation/sptiDualVIOServerswp.pdf



MPIO Path Management
The MPIO support over virtual SCSI between the client partition and the dual VIO Servers only supports failover mode. The client partition will use a primary path to one VIO Server and failover to the secondary path to use the other VIO Server. Only one path is used at a given time even though both paths may be enabled. To balance the load of multiple client partitions across dual VIO Servers, the priority can be set to select the primary path and therefore a specific VIO Server for each client partition. The priority is set on a per virtual SCSI disk drive basis so all the disks or alternate disks on a client partition can use one of the VIO Servers. The recommended method is to divide the client partitions between the two VIO Servers.