How archiving uses available space on media

An archive job for which purge or overwrite has not been selected uses the available space on archive media and then fails when no more space is available. The resulting archive set contains a subset of the desired backups, and it is possible that these backups can be restored. Because the archiving feature appends backups to the media, a larger set of backups can be maintained on the media. However, you should develop a plan for rotating the media on a regular basis to reduce the risk of data loss.

An archive job for which purge or overwrite has been selected fails if purging or overwrite cannot create adequate space for the job. No backups are written to the media and any existing sets are not impacted by the job.

For details about the purge and overwrite options, see Purge and Overwrite.