Verifying tape device connections

You must ensure that all drives and media changers are visible in ONTAP as devices.

1. View information about all drives and media changers by using the storage tape show command.

   cluster1::> storage tape show
   
   Node: cluster1-01 
   Device ID               Device Type     Description                     Status
   ----------------------  --------------  ------------------------------  --------
   sw4:10.11               tape drive      HP LTO-3                        normal
   0b.125L1                media changer   HP MSL G3 Series                normal
   0d.4                    tape drive      IBM LTO 5 ULT3580               normal
   0d.4L1                  media changer   IBM 3573-TL                     normal   
   ... 

2. If a tape drive is not displayed, troubleshoot the problem.
3. If a media changer is not displayed, view information about media changers by using the storage tape show-media-changer command, and then troubleshoot the problem.

   cluster1::> storage tape show-media-changer
   
   Media Changer: sw4:10.11L1
     Description: PX70-TL
            WWNN: 2:00a:000e11:10b919
            WWPN: 2:00b:000e11:10b919
   Serial Number: 00FRU7800000_LL1
   
          Errors: -
   
   Paths:
   Node                      Initiator  Alias    Device State              Status
   ------------------------  ---------  -------  ------------------------  --------
   cluster1-01               2b         mc0      in-use                    normal
   ...