About the Linux tape drive device files
For tape drive device files, NetBackup uses the /dev/nstx files (n indicates the no rewind device file). The Linux driver should create the device files automatically. If the device files do not exist, see the Linux documentation for information about how to create them.
If you use device discovery in NetBackup, NetBackup looks for /dev/nstx device files. NetBackup discovers the device files (and hence the devices) automatically. Alternatively, if you add a drive manually in NetBackup, you must enter the pathname to the device file for that drive.
The NetBackup avrd daemon establishes a default tape driver operating mode. If you change the default mode, NetBackup may not read and write tapes correctly, which results in data loss.