MPIO in Guest OS - supported ?

[zenivox]

Hello, from what I understand it does not make sense to have MPIO installed on a guest OS when the ESXi host already takes care of multipathing. However, I cannot find a VMware KB stating anything official. Anybody has anything?

[bryanvaneeden · Accepted solution]

I'm not really aware of any official documentation. But you don't actually need multipathing inside the GuestOS since the ESXi host is only presenting 1 datapath for a pRDM to the GuestOS. The VMW-SATP-ALUA rule is doing this for you. As long as the ESXi host has more than 1 datapath, you are fine and don't actually need MPIO.

[IRIX201110141]

If you wanna use iSCSI within the GuestOS? Than for sure.