NetBackup media not available
Some backup failures can occur because there is no media available. In that case, execute the following script and run the NetBackup Media List report to check the status of media:
/usr/openv/netbackup/bin/goodies/available_media
Windows
install_path\NetBackup\bin\goodies\available_media
The NetBackup Media List report may show that some media is frozen and therefore cannot be used for backups.
I/O errors that recur can cause NetBackup to freeze media. The NetBackup Troubleshooting Guide describes how to deal with this issue. For example, see under NetBackup error code 96.