Thecus N8900 series User Manual page 172

Disable USB Copy
Simply select "Disable" for the USB Copy Service option and the USB Copy button
or LCM/OLED USB Copy item will become inactive.
Using USB Copy
Enable the USB Copy service and select one of the 3 options available: "USB to
NAS", "NAS to USB", and "Copy all USB files to NAS".
If select "USB to NAS" or "NAS to NAS", you will also need to set up the type of
backup desired.
USB Copy Service Transfer Options
Item
Sync
Incremental
Create New Folder
Apply
Now, add the task for the USB Copy service you have selected (for "USB to NAS" or
"NAS to USB").
Click on "Add" and select "Source Path" and "Target Path" from the drop-down list.
Description
Makes your source match your target completely; deleting and adding
files on your target as they are deleted and added on your source.
Makes your source match your target and keep all old files; adding files
on your target as they are added on your source, but NOT deleting files
on your target as they are deleted on your source.
Create new folder on target based on the task's "Date+Time".
Press Apply to confirm the settings.
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