DNS-722-4 / DNS-726-4
2-Bay Network Video Recorder (NVR)
Trustworthy Surveillance
+ Reliable network camera surveillance
recorder for home and business
+ Record video from up to 8 network
cameras to network storage (HDD is
not included)
+ View real-time video of all 8 cameras
from anywhere in your home or office,
or remotely via the Internet
+ Allows concurrent viewing and
Convenient Interface
+ Effortless network camera setup and
+ User-friendly interface provides
simultaneous live view, recording and
+ Continuous or scheduled recording
with automatic overwrite function
+ Reliable backup and power failure
recovery functions
Precision Technology
+ “Smart Search” technology
accelerates and simplifies event
+ Green solution: Consumes less
power and eliminates the need for a
dedicated PC for continuous recording
+ Live monitoring includes full-screen,
snapshot and pan/tilt/zoom (PTZ)
+ Precision playback with step/
fast forward/rewind and video
+ Export video as AVI or ASF with
+ Calendar search and video preview
before playback
The answer to expensive, outmoded, analog CCTV surveillance systems has arrived.
When coupled with D-Link’s high-resolution and feature-rich IP cameras, the Network
Video Recorder (NVR) offers a comprehensive video display, storage, and management
solution. The D-Link NVR provides reliable high-quality remote monitoring functionality at
a fraction of the cost of conventional surveillance systems.
Instant Live View
D-Link’s intuitive GUI interface simplifies viewing live
and recorded video from the NVR. The camera status
page shows connection and recording status, along with
frame rate and bit rate information for each camera. Total
available recording time for the system is also clearly
displayed for each NVR.
Live Monitoring & Camera Adjustment
Users are provided with a variety of options for viewing
and organizing camera footage on-screen. For a system
with multiple channels, users can simply drag and drop
selected cameras to the viewing area. Camera names
and recording status is displayed via OSD to aid in
identification. Presets from within the interface can be
set to instantly restore a previously saved view.
A single camera may be viewed full-screen with optional
two-way audio. Users can control pan/tilt/zoom (PTZ)
functions from within the interface using the provided
interface buttons or by directly clicking on the video.
Extensive Recording Functionality
A clear single-page interface assists with configuration
including compression, resolution and frame rate for all
connected cameras. The NVR records video from up to
8 local and remote IP cameras. A total of 2 NVRs can
be combined and administered with D-Link’s bundled 16
channel management software.
Once cameras have been set up, a highly configurable
scheduling system allows for continuous recording or
recording during specifically allotted timeframes. Each
camera can be set to record independently at preset
intervals. The NVR also provides event recording based
on specific triggers.
Powerful Event Management
The NVR centrally controls the digital output, e-mail
notifications and recording for all the connected
cameras. Input triggers from camera motion detection
or digital input interfaces can additionally be monitored.
These events will be logged, with optional notifications
via e-mail or output devices. Users can set up multiple
contact lists for event notification. A straightforward
logging system organizes events by date for easy recall.
Intelligent Playback
Searching through recorded data can be tedious and
frustrating. However, the NVR’s smart search function
makes detecting notable events effortless. By selecting
a target area on the video and setting search sensitivity,
the smart search will traverse the video database based
on specified search criteria to locate noteworthy events.
Search criteria include options such as motion detection,
missing or abandoned object, lost focus or camera
occlusion. (DNS-726-4 only)
After selecting a desired video period for display, the NVR
can instantly begin playback. The DNS-726-4 supports
4 channel simultaneous playback and the DNS-722-4
supports 1 channel playback. Playback speed control
allows for up to 16x speed fast forward or fast backward
play. The step playback option displays one frame at
a time. Additionally, users can enhance the recorded
video with controls such as brightness, contrast, and
During playback, if a user uncovers video that needs to
be exported, two formats are available. The AVI and ASF
file formats will transpose a timestamp on the exported
video. If a printer is connected to the user’s PC, the NVR
can also print the selected still image.
The NVR can be configured to overwrite the oldest
data automatically when HDD space runs out, allowing
for continuous and uninterrupted recording. Users can
specify the number of days the recording should be kept
(within the limits of the HDD capacity). For example, if the
NVR has the capacity to store 7 days of recording, using
the overwrite option, the NVR will record the 8th day and
delete the 1st day.
The NVR also provides the option to stop recording
when the HDD is full. Should the disk reach capacity,
a notification can be sent via e-mail or to an external
device such as an audible alarm or LED display via a DI/
DO interface only.
DNS-722-4 / DNS-726-4
2-Bay Network Video Recorder (NVR)
Easy Setup and Configuration
+ Directly connectable to the Internet
(PPoE) without the need to install a
remote router
+ Supports PPPoE, DHCP and Static IP
+ 2-bay SATA 3.5” HDD interface
+ Up to 3TB of hard disk storage space
of recorded video2
+ RAID 0/1 and JBOD support
Dependable Data Security
+ Protects important surveillance files with automatic backups to mirrored
hard drives using RAID 1 technology3
+ USB connection to UPS possible for
power failure notification
Flexible and Scalable
+ Allows connection of up to 2 NVRs
together to 16 cameras and managing
them as a group
+ Stand-alone device: Eliminates the
need for a dedicated PC
+ Supports D-Link and 3rd party network
1 Available only in DNS-726-4 and can view both
DNS-722-4 and DNS-726-4
The D-Link NVR ensures the security and integrity of
IP camera footage. Administrators may filter external
connections to the NVR by IP address, limiting access
and thus increasing security. Administrators may also
choose access privileges for users by specifying the
cameras they may access to for live view, playback,
audio and PTZ functions.
Recorded data is stored in a secure database. This
recorded data can be backed up to additional storage
locations periodically or whenever needed. The NVR
also includes the option to protect data using a RAID 1
configuration. RAID 1 duplicates the recordings database
onto two separate drives. In the event of an HDD failure,
data integrity is maintained on the secondary HDD.
A UPS can be used as emergency power supply for the
NVR. The UPS uses a USB interface to notify the NVR
to perform a proper shutdown before battery power runs
out. In the event of a power failure without a UPS, the
NVR will boot up automatically once power is restored.
Of course, the security of data is irrelevant unless the
device itself is protected from theft. For this reason, the
sleek NVR enclosure is compact and easy to conceal in
a secure remote location. A front panel lock protects the
HDD and a rear panel lock can be used to secure the NVR
with a cable.
Complete Network Functionality
The D-Link NVR takes advantage of existing network
architecture, taking advantage of features such as PPPoE
and ADSL services. The NVR can acquire an IP address
from a DHCP server to become easily searchable during
installation. Dynamic DNS is supported for systems
operating without a fixed IP address. The NVR can then
be reached from the internet using an easy to remember
domain name provided by the DDNS service.
Maintaining an accurate record of time is essential
if recorded data is to be used as evidence. To ensure
that the recorded time is always accurate, the NVR can
update the system clock from an internet server using
the Network Time Protocol (NTP).
D-ViewCam NVR Software
The D-LinkCam NVR software bundled with the D-Link
NVR consists of three main components: Playback
Manager, Backup and File Manager, and Multi-NVR
Viewer. The “Multi-NVR Viewer” supports simultaneous
display of up to 16 channels. Easily organize the view by
directly dragging and dropping video onto the display
window. Cameras managed by the NVR can be viewed as
individual sites or categorized into groups. The “Playback
Manager” includes a clean and simple web GUI interface
that allows users to play, search or export video. The
“Backup and File Manager” is a flexible backup utility
that simplifies the process of backing up video data from
the NVR to external storage.
Network Setup Using D-Link NVR
2 Hard drive(s) not included with the NVR.
Aninternal SATA drive is required to store video
files. RAID 1 mirroring requires the use of two
internal SATA drives. 3TB capacity when two
1.5TB 3.5” hard disks are installed in your NVR.
Disk capacity may increase pending future
advances in HDD technology.
3 To avoid data incompatibility in RAID 1 operation,
use SATA drives from the same manufacturer.
Formatted drive capacity for RAID 1 operation is
dependant on the drive capacity of the lowestsized drive. Older generation SATA drives may be
incompatible. For a list of SATA drives that have
been tested to work with your D-Link NVR, visit
D-Link support web sites.
Axis, Panasonic, Sony, Mobotix, Arecont,
IQinVision, Cisco and Acti cameras support
available on DNS-726-4 Professional NVR only.
DNS-722-4 / DNS-726-4
Firmware Specifications
+ Linux
Supported Cameras
+ DNS-722-4: Supports all D-Link
network cameras. Includes
support for auto-discovery, and
up to 1.3 megapixel resolution.
+ DNS-726-4: Supports knownbrand network cameras
including D-Link, Axis,
Panasonic, Sony, Mobotix,
Arecano, IQinVision, Cisco and
Acti Specific feature support
depends on software.
Recording Performance
+ Up to 120fps at D1/240fps at CIF
for 8 channels
Camera Search
+ UPnP
Audio & Video Recording
+ Synchronized audio & video
Compression Format
+ H.264, MPEG-4, M-JPEG (for
supported cameras)
Video Setting
+ Resolution, quality, frame rate,
enable audio, go to camera
(DNS-726-4 only), snapshot, full
screen, digital zoom
Remote Playback Control
+ Playback with normal, fast
forward/rewind and step
+ Smart Search (DNS-726-4 only)
Intelligent detection function:
General Motion, Missing
Object, Foreign Object, Camera
Occlusion, Lose Focus
Remote Playback
+ Supported via IE and NVR client
+ Playback system with timeline
GUI, search by event, area,
cameras, date and time
+ DNS-722-4: IE & NVR client
support 1 channel playback
+ DNS-726-4: IE & NVR client
support 8 channel simultaneous
playback, and intelligent search
by general motion, missing
+ Digital zoom to specified area
Overwrite Recording
+ Auto recycling when disk
storage is full
File Export
+ Export videos to “AVI” or “ASF”
+ Export images to “BMP” or
“JPG” file
Recording Type
+ DNS-722-4: record by schedule,
manual record and event-based
recording (Motion detection
from camera)
+ DNS-726-4: recording by
schedule, manual and event (DI
trigger, motion detection from
User Account
+ Additional accounts can be
created to allow user access
to the system, and specify
authorization for camera
channels, PTZ, etc.
Remote Live View
+ Supported via IE remote live
+ Maximum 8 simultaneous
System Time
+ Set the system time (D-Link NTP,
input time, sync with computer,
Daylight Saving Time)
Remote Live View Control
+ Live view, preset/go, patrol,
focus, PTZ functions, remote IO
+ D-Link DDNS server support
Remote Backup
+ Remote software can backup
raw data to redundant storage
+ Auto backup the Video of
previous day to FTP server
System Status
+ Camera status, System status
+ Still picture EMAP suppport
Network Service Protocols
+ DHCP Client
+ NTP Client (D-Link)
+ DNS Client
+ DDNS Client (D-Link)
+ SMTP Client
+ HTTP Server
+ UPnP
+ IP filtering
User Interface
+ Internet Explorer v6 or later
+ NVR Search utility
Hardware Specifications
I/O ports
+ RJ45 port x1
+ DC-in jack x1
+ USB port for UPS status update
Power Adapter
+ DC12V/3A, DC5V/3A
Reset Button
+ Reset to factory default
+ Front panel lock
+ Device lock hole
Power Consumption
+ Max. power consumption:
+ Standby state max. power
consumption: 7.26W
Dimension (W x D x H)
+ 198 (W) x 104 (D) x 132 (H) mm
(7.8 x 4.1 x 5.2 inches)
+ IEEE 802.3/u/z
+ Auto MDI/MDI-X
+ 1.23 kg (2.7 lbs)
+ HDD control & manage via PC
+ Reformat Disk
+ RAID 0, 1
Storage Temperature
-20˚ to 70˚ C (-4˚ to 158˚ F)
Two Reset modes
+ Reset firmware GUI button
+ HW reset button (hold for 5
Flash ROM
+ 32MB
+ 128MB DDR
Network Interface
+ Gigabit Ethernet LAN port
(10/100/1000 Mbps)
Operating Temperature
0˚ to 55˚ C (32˚ to 131˚ F)
+ Operating: 5% to 90% (noncondensing)
Package Contents
+ 2-Bay NVR
+ Power Adapter
+ Ethernet Cable
+ Quick Installation Guide
+ Power Cable Holder
+ Keys
+ CD-ROM with:
- Software
- Product Documentation
DNS-722-4 / DNS-726-4
Surveillance Product Comparison
D-Link NVR Comparison
Simultaneous Playback
1 Channel
4 Channels
Low Total Cost of Ownership
Live View
Low Power Consumption
UPS Support w/ USB
Camera Power over Ethernet
Export Image/Video
High Stability
Physical Security
Compact Size
RAID Support
Feasible Redundant Power
Remote Backup
Immune to Viruses and Malware
Scheduled/Manual Recording
Powerful Management Software
Event Recording (I/O, motion)
motion, I/O
Supports D-Link Cameras
Supports Additional Cameras
Smart Search
Remote I/O Support
Supported D-Link Cameras*
DCS-910 A1/ A2
Fixed Network Camera
DCS-5230 A1
Wireless N PTZ Network Camera
DCS-920 A1/ A2
Fixed Network Camera
DCS-5300 A3/ A4
10/100 Mbps Pan/Tilt Network Camera
DCS-1100 A1/ A2
Wired Network Camera
DCS-5300G B2
802.11g Wireless Audio Network Camera with Pan/Tilt
DCS-1130 A1/ A2
Wireless N Network Camera
DCS-5610 A1/ A2
2.6x PTZ PoE Network Camera
DCS-2102 A1/ A2
Wireless Megapixel Network Camera
DCS-5605 A1
10x PTZ Day & Night Network Camera
DCS-2121 A1/ A2
Wireless Megapixel Network Camera
DCS-5635 A1
Wireless N 10x PTZ Day & Night Network Camera
DCS-3110 A1/ A2
Megapixel PoE Network Camera
DCS-6110 A1/ A2/ A3
Fixed Dome PoE Network Camera
DCS-3410 A1/ A2
Day and Night PoE Camera
DCS-6111 A1/ A2
WDR Fixed Dome Day & Night Network Camera
DCS-3411 A1/ A2/ A3
Fixed Day & Night Network Camera
DCS-6410 A1/ A2
Fixed Dome Day and Night PoE Camera
DCS-3430 A1/ A2/ A3
Wireless N Fixed Day&Night Network Camera
DCS-7410 A1/ A2
Day & Night Outdoor PoE Network Camera
DCS-3710 A1
Megapixel Day & Night WDR Network Camera
DCS-7510 A1/ A2
Day & Night Outdoor PoE Network Camera
DCS-3415 A1/ A2/ A3
18x PoE Network Camera
DVS-210-1 A1
1 channel Video Server
DCS-5220 A2/ B1
Wireless PT Network Camera with 3G Mobile Video
DVS-310-1 A1
1 channel PoE Video Server
* Please visit the D-Link website for an updated list of supported cameras.
D-Link Corporation
No. 289 Xinhu 3rd Road, Neihu, Taipei 114, Taiwan
Specifications are subject to change without notice.
D-Link is a registered trademark of D-Link Corporation and its overseas subsidiaries.
All other trademarks belong to their respective owners.
©2010 D-Link Corporation. All rights reserved.
Release 04 (March 2010)