Sabio DM4 User Manual page 26

3. Next, use the same small, flat-blade screwdriver to select the number of
HDDs (HD Switch).
4. After setting the new RAID mode and the number of HDDs, power the RAID
System "on".
It is highly recommended to always power off the RAID System before
setting or changing the RAID Mode Switch and the HD Switch to ensure the new
changes are accepted by the System.
HD
ON
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