As a matter of fact Alan and myself talked about this during our presentation at VMworld 2013.
Let me dig up that info
I can list the LUNs seen by the ESXi, but I haven't succeeded (yet) in extracting any RAID configuration info.
I'll keep looking.
In the mean time, try the attached script, it should return the LUN info for the ESXi.
I'm curious if the HW vendor you are using provides all the info.
Note that the script requires at least PowerShell v3 (no need to have PowerCLI installed).
CIM-Storage-Extents.ps1.zip 985 bytes