Buffalo TeraStation TS3400D User Manual page 43

3
Choose a RAID array.
4
Set the RAID mode to "RAID 1".
5
Check "Add a disk to RAID array with RMM. Your data will be preserved.".
6
Select the drive whose data will be saved from the drop-down menu.
7
Select the drive to add to the RAID array.
8
Click Create RAID Array.
9
The "Confirm Operation" screen will open. Enter the confirmation number, then click OK.
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