Device names for disks are assigned according to the naming scheme which you specify to DMP. The format of the device name may vary for different categories of disks.
Device names can use one of the following naming schemes:
operating system-based naming.
enclosure-based naming.
Devices with device names longer than 31 characters always use enclosure-based names.
By default, DMP uses enclosure-based naming. You can change the disk device naming scheme if required.