[FASherman]

If I understand you right, you have an HBA in your LPAR and an HBA in the VIO server. You want to assign a LUN to both WWNs, and assign the hdisk on the VIO server to a vdev and present it to the same LPAR, so that it will have two views of the same device?

The answer is it will fail and here's why this is a bad idea.

You will have one device, same PVID, same VGDA, presented as both a FC drive and a VSCSI drive. MPIO is not going to be able to handle the mixed protocols.

The better solution is to reassign the LPAR HBA to the VIO server. It will not have two paths to the LUN, which it can manage via MPIO to provide authomatic path redundancy. Then just virtualize it as you were planning.