How to automatically check if devices in datastore are RDM or not ?

Hi,

I'm working on 2 ESXi 5.5 U3 which have the same datastore attached. Some VM are on the first and some on the second. Sometimes i need to migrate from one to another.

For my configuration (to decide if i have to use VMW_PSP_MRU or RR following devices), i need to know which devices are RDM and which are not.

I've used a great script to detect which device is RDM but this script is based on VMs and not Host.

My question is : is there any way to "scan" all datastore attached to a host ? or scanning all files to detect RDM without VM presence ?)

(the fabulous  script is here : VMprosVMware: List all RDM disks in Hosts and Virtual Machines via PowerCLI - VMpros  )

Best regards,

Gael