Dual controller MD3600i with separate subnets (as per manual), connecting via separate isolated switches to two separate HBAs in ESX 4/5

What am I supposed to see (have) with multipath working correcly?

Active (I/O) - Active (this is what I have showing currently)

or

Active (I/O) - Active (I/O) (I believe it should be that condition)

on each controller for each target (LUN)

The manual states:

Increasing Bandwidth With Multiple iSCSI Sessions The PowerVault MD3600i Series storage array in a duplex configuration  supports two active/active asymmetric redundant controllers. Each  controller has two 10G Ethernet ports that support iSCSI. The bandwidth  of the two ports on the same controller can be aggregated to provide  optimal performance. A host can be configured to simultaneously use the  bandwidth of both the ports on a controller to access virtual disks  owned by the controller. The multi-path failover driver that Dell  provides for the MD3600i Series storage array can be used to configure  the storage array so that all ports are used for simultaneous I/O  access. If the multi-path driver detects multiple paths to the same  virtual disk through the ports on the same controller, it load-balances  I/O access from the host across all ports on the controller.

There is no driver for ESX, so how would one configure it?

I am NOT using the targets (LUN) for VMFS, but RDM to my VM OS

Thanks

Seb