Use sub-file copy option

Set the sub-file copy option for remote storage backup copies.

Initially, an entire file is copied to the storage areas. When sub-file copy is turned on and the file size exceeds the sub-file limit, if the file changes only the changed information is copied to the storage area. The sub-file copies are saved as separate files on the remote storage areas.

Sub-file copy can significantly reduce the amount of network traffic. However, sub-file copy uses more processing resources on your computer. The default setting is to use sub-file copy for files larger than 50 MB. If you need to conserve more network resources, you can reduce the size setting so sub-file copy is not used on even smaller files.

To use sub-file copy to remote storage, you must have a backup copy of your files on local storage. In the General panel of the Settings Notebook, set the Continuous protection level field to Local and remote storage. In the General panel of the Groups Configuration, set the Continuous protection level field to Local and remote storage. Then you can set the sub-file backup option.

Check the check box to turn on sub-file copy. In the Use sub-file copy for files larger than field, specify the file size threshold for using sub-file copy. For files larger than this size, only the changed information is copied to the storage area.