About checking for tape and driver configuration errors
To detect data loss, the bptm process reads the tape position and then verifies the actual position against the expected position.
If a configuration problem causes the actual position to be greater than the expected position at the end of the backup process, the following events occur:
The tape is frozen.
The backup fails.
The following error message entry is placed in the bptm log:
FREEZING media id xxxxxx, too many data blocks written, check tape/driver block size configuration
The backup data may be usable. If so, import the image by using the NetBackup bpimport command so the data is available for restores.