I am not seeing the PV MD3220 as a supported array for ODX. I believe the Equallogic arrays with the latest firmware is supported with it.

Below is the support matrix for the MD3220 and it lists everything the array is supported to work with.

ftp.dell.com/.../powervault-md3200_Concept%20Guide_en-us.pdf

Please feel free to let me know if there is anything else that you need.

I agree the first floor