mtlib -l /dev/lmcp0 -f /dev/rmt1 -qD
Device Data:
   mounted volser.............none.
   device category............012E
   device state...............Device installed in Library.
                              Device available to Library.
                              ACL is installed.
                              Auto Fill is enabled.
   device class...............3590-E1A
   extended device status.....00

$ mtlib -l /dev/lmcp0 -D
  0, 00C33980 003590E1A00
  1, 00C39160 003590E1A01

$ mtlib -l /dev/lmcp0 -D -E
 Type   Mod  Serial #   Devnum   Cuid  Device  VTS Library
003590  E1A  13-C3398  00C33980    1      0
003590  E1A  13-C3916  00C39160    2      0

$  mtlib -l /dev/lmcp0 -qM
IBM016 C39160

$ tapeutil -f /dev/rmt1 inquiry
Issuing inquiry...

Inquiry Data,  Length 56

            0 1  2 3  4 5  6 7  8 9  A B  C D  E F   0123456789ABCDEF
    0000 - 0180 0302 3300 1000 4942 4D20 2020 2020  [...3...IBM     ]
    0010 - 3033 3539 3045 3141 2020 2020 2020 2020  [03590E1A        ]
    0020 - 4533 3731 3133 3030 3030 3030 3043 3333  [E371130000000C33]
    0030 - 3938 2030 0500 0181                      [98 0...        ]

$ lscfg -vl rmt1
  DEVICE            LOCATION          DESCRIPTION

  rmt1              14-08-01          IBM 3590 Tape Drive and Medium
                                      Changer (FCP)

        Manufacturer................IBM
        Machine Type and Model......03590E1A
        Serial Number...............0000000C3398
        Device Specific.(FW)........E371
        Loadable Microcode Level....A0B00E26

$ tapeutil -f /dev/rmt2 fuser
Device is currently open by process id 13474
$ ps -ef |grep dsms
    root 13474     1   1 08:24:41      -  1:08 ./dsmserv