I found that some customers uses SnapView on CX or VNX Flare with AIX native MPIO driver on VIOS or AIX.
Already in 2008, EMC wrote a technical note specifying that software layered like Snapview was not supported with AIX MPIO.
Today, this technote has disappeared but EMC support write a EMC primus "emc75601" specify that it is still not supported with VNX software layered.
Driver Example :
EMC.CLARiiON.fcp.MPIO.rte 22.214.171.124 C F EMC CLARiiON FCP MPIO Support
devices.common.IBM.mpio.rte 126.96.36.199 C F MPIO Disk Path Control Module
EMC primus case "emc75601"
EMC Layered software such as SnapView, MirrorView/Asynchronous, MirrorView/Synchronous,
EMC SAN Copy, etc., are not supported with hosts running AIX Native MPIO
So if it is imperative to use Snapview, then install EMC PowerPath.