Buffalo TeraStation 7000 User Manual page 72

The following types of backup jobs may be selected:
Type
Normal backup
Overwrite Backup (Append)
Overwrite Backup (Differential)
Management Backup
5
Click Add.
6
Click Browse under "Backup Source Folder Name".
7
Select the shared folder that will be the backup source, then click OK.
8
Click Browse under "Backup Target Folder Name".
9
Select the backup target and click OK.
Files included
All files in the source will be backed up to the destination.
The first time the backup job runs like a normal backup. In subsequent
backups, files added to the source as well as files deleted from the source
are kept in the backup folder.
The first backup job runs like a normal backup. As each additional backup
job runs, files are added to and deleted from the backup folder. The
backup destination folder is always the same size as the backup source
folder.
Each time a backup is executed, management information is stored, and
only files that have changed are copied or deleted. Data is retrieved from
the previous backup file for files that were not changed. This is useful for
making backups with limited space or for referencing status at a particular
point in time (for use for data snapshot applications).
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