About no rewind device files on AIX
By default, NetBackup uses no rewind device files. These SCSI device files are in the /dev directory and have the following format:
/dev/rmtID.1
ID is the logical identifier assigned to the device by the system. The .1 extension specifies the no rewind, no retension on open device file.
Normally, AIX creates tape drive device files automatically at boot time. Alternatively, you can run the AIX cfgmgr command, which should create the device files. If they do not exist, you must create them for the tape drives.