This option creates a Raw Device Mapping (RDM) file on a VMFS volume and maps a raw LUN to this file. After this mapping is established, you can access the LUN as you would a normal VMFS virtual disk. The file length of the mapping is the same as the size of the raw LUN it points to.

-r --createrdm device

When specifying the device parameter, use the following format:

/vmfs/devices/disks/disk_ID:P