The system administrator can also run data store garbage collection manually on as as-needed basis but it cannot be automated more than once. In general, it is recommended that data store garbage collection be performed periodically, but that the following factors be taken into account in planning data store garbage collections:
Data store garbage collections take time and may impact performance, so they should be planned accordingly.
Removal of data store garbage records does not affect normal performance, so this is not a performance optimization.
If storage utilization and related factors like backup times are not a concern, then data store garbage collection might be safely deferred.