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The media overwrite protection level is a global setting that supersedes the media set's overwrite protection period. Although the terms are similar, the media overwrite protection level and the media overwrite protection period are different. The media overwrite protection period is a time interval that changes from one media set to another. The media overwrite protection level specifies whether to overwrite scratch, imported, or allocated media, regardless of the media's overwrite protection period.
Use the media overwrite protection level to specify the type of media, such as scratch or imported media, that you want to be available for overwrite backup jobs.
The options for the media overwrite protection level are as follows:
Full - Overwrites scratch media, which are media that contain data you are willing to discard, and recyclable media, which are media that are associated with media sets and have expired overwrite protection periods.
Partial - Overwrites imported media, which are media that was created by another installation of Backup Exec or some other backup product, and overwrite scratch media.
None - Overwrites all media, including those that have current overwrite protection periods (allocated media).