Purge and overwrite comparison

See the following table for a side-by-side comparison of the purge and overwrite options. For more details, see Purge and Overwrite.

Purge

Overwrite

     If no space is available on the media, purge deletes archive sets that have exceeded their retention settings to create space for new sets.

     Individual sets are purged only if their retention period has expired.

     Sets are purged only if there is not enough space on the media for the archive job.

     Sets are purged until there is enough space to complete the job.

     If all sets on the media have exceeded their retention, overwrite deletes them and replaces them with the new sets.

     All sets on the media are overwritten only if all have exceeded their retention settings.

     All sets are overwritten regardless of available space.

     Job fails and nothing is written to the media if purge cannot create adequate space for the entire job.

     Job fails and nothing is written to the media if overwrite cannot create adequate space for the entire job.

     Not supported for tape.

     Supported for all media.