D-Link ShareCenter DNS-340L User Manual page 361

Section 4 - Configuration
Under Create New Backup, start creating your new backup folder and destination.
Enter a Folder Name in the field provided. Click Browse to select a destination
path. If you do not have a folder, click the + sign to create a new folder. Type a
new folder name then click OK to continue.
Select the path, on the NAS, where you want the backup to reside.
D-Link ShareCenter DNS-340L User Manual 359