To troubleshoot media and devices on UNIX, try the following:

• Ensure that the syslogd logs debug messages relating to ltid and other device processes.

  For more information on syslogd, refer to the NetBackup Troubleshooting Guide.

• Start ltid with the -v option. Check the system's syslog for troubleshooting clues.

• Use vmps to make sure that the appropriate daemons are running.

• Drives can be unexpectedly set to the DOWN state. This action is due to communication problems between avrd on the NetBackup for NDMP server and the NDMP server application on the NDMP host.

  Further details are available.