preserveDeletedFiles

Specifies whether files in the destination location that don't exist in the source should be preserved. This option can affect your Amazon S3 storage cost. If your task deletes objects, you might incur minimum storage duration charges for certain storage classes. For detailed information, see Considerations when working with Amazon S3 storage classes in DataSync.

• PRESERVE (default) - Ignores such destination files, which is recommended.

• REMOVE - Deletes destination files that aren’t present in the source.

If you set this parameter to REMOVE, you can't set TransferMode to ALL. When you transfer all data, DataSync doesn't scan your destination location and doesn't know what to delete.