D-Link DNS-327L User Manual page 129

Section 4 - Configuration
The 'Volume Configuration Summary' shows details on all of the configured
drives. Check the details on the list and click Format to continue or click
Previous to make changes.
A warning message will appear to inform you that all volumes and data
will be formatted and erased.
Click Yes to continue.
DNS-327L 124
D-Link ShareCenter User Manual