You can assign tape aliases to provide a correspondence between the logical names of backup devices and a name permanently assigned to a port, a tape drive, or a medium changer.
alias is the logical name of the tape drive or medium changer to which you want to add the alias.
PPN is the physical path name to which you want to assign the tape drive or medium changer.
SN is the unique identifier of a tape drive or medium changer.
The tape device st0 is assigned to the physical path name MY_SWITCH:5.3L3.
The medium changer alias mc80 is mapped to its serial number SN[HU106150D4] on LUN 0.