D-Link ShareCenter DNS-340L User Manual page 54

Section 3 - Installation
The wizard software will start the formatting process. After this is complete,
click Next to continue.
Note: Do not close the wizard or use other applications until the process is
complete.
To verify your RAID 10, login to your NAS, go to Management>>Disk
Management>>Hard Drive Configuration. This shows the current status of
your drives.
D-Link ShareCenter DNS-340L User Manual 52