Unlike a duplication of a backup that uses Granular Recovery Technology (GRT) from tape to disk, duplication of the same backup from disk to tape takes extra time. NetBackup requires this extra time to catalog the granular Exchange information. You can choose not to catalog the granular information so that the duplication is performed more quickly. However, then users are not able to browse for individual items on the image that was duplicated to tape if the disk copy expires.
During the duplication process, NetBackup writes log entries periodically to show the progress of the job.
To disable the cataloging of Exchange backups using Granular Recovery Technology