Re: How to get Physical RDM naa ID assigned to VM ?

For physical RDM, you should be able to get the NAA ID by inspecting the vmdk pointer:

vmkfstool -q your_RDM_pointer.vmdk

This will give you the vml.XXXXX string. Then look it up via

esxcfg-scsidevs -u

You can also get the ID from VM side with scsi_id (or udevadm) on linux