D-Link DNS-722-4 User Manual page 16

Section 2 - Installation
3. Once the faceplate is unlatched, pull it off the device,
exposing the drive bays.
4. Insert a 3.5" SATA hard drive into an available drive
bay. Make sure to align the drive connector to the SATA
connector on the bottom edge inside the drive bay of the
NVR. Gently push the drive in until it connects. When a
drive is inserted properly, you will feel it "seat" into the
connector. Some hard drives that are thin or oddly shaped
may need to be guided carefully into position. If a drive is
not properly seated, the LED will not illuminate once the
device has been powered on.
Optional: When installing an optional second Hard Disk,
please repeat Step 4. To avoid data incompatibility in
RAID 1 operation, use identical SATA drives from the
same manufacturer. Formatted drive capacity for RAID 1
operation is dependant on the Hard Disk with the lowest
capacity.
D-Link DNS-722-4/DNS-726-4 User Manual 12