DNS-722-4 / DNS-726-4
2-Bay Network Video Recorder (NVR)
Trustworthy Surveillance
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
+ Reliable network camera surveillance
Video Recorder (NVR) offers a comprehensive video display, storage, and management
recorder for home and business
solution. The D-Link NVR provides reliable high-quality remote monitoring functionality at
+ Record video from up to 8 network
a fraction of the cost of conventional surveillance systems.
cameras to network storage (HDD is
not included)
Instant Live View
Powerful Event Management
+ View real-time video of all 8 cameras
D-Link’s intuitive GUI interface simplifies viewing live The NVR centrally controls the digital output, e-mail
from anywhere in your home or office,
and recorded video from the NVR. The camera status notifications and recording for all the connected
or remotely via the Internet
page shows connection and recording status, along with cameras. Input triggers from camera motion detection
+ Allows concurrent viewing and
frame rate and bit rate information for each camera. Total or digital input interfaces can additionally be monitored.
available recording time for the system is also clearly These events will be logged, with optional notifications
displayed for each NVR.
via e-mail or output devices. Users can set up multiple
Convenient Interface
contact lists for event notification. A straightforward
+ Effortless network camera setup and
Live Monitoring & Camera Adjustment
logging system organizes events by date for easy recall.
Users are provided with a variety of options for viewing
and organizing camera footage on-screen. For a system Intelligent Playback
+ User-friendly interface provides
with multiple channels, users can simply drag and drop Searching through recorded data can be tedious and
simultaneous live view, recording and
selected cameras to the viewing area. Camera names frustrating. However, the NVR’s smart search function
and recording status is displayed via OSD to aid in makes detecting notable events effortless. By selecting
+ Continuous or scheduled recording
identification. Presets from within the interface can be a target area on the video and setting search sensitivity,
with automatic overwrite function
set to instantly restore a previously saved view.
the smart search will traverse the video database based
+ Reliable backup and power failure
on specified search criteria to locate noteworthy events.
recovery functions
A single camera may be viewed full-screen with optional Search criteria include options such as motion detection,
two-way audio. Users can control pan/tilt/zoom (PTZ) missing or abandoned object, lost focus or camera
Precision Technology
functions from within the interface using the provided occlusion. (DNS-726-4 only)
interface buttons or by directly clicking on the video.
+ “Smart Search” technology
After selecting a desired video period for display, the NVR
accelerates and simplifies event
Extensive Recording Functionality
can instantly begin playback. The DNS-726-4 supports
A clear single-page interface assists with configuration 4 channel simultaneous playback and the DNS-722-4
+ Green solution: Consumes less
including compression, resolution and frame rate for all supports 1 channel playback. Playback speed control
power and eliminates the need for a
connected cameras. The NVR records video from up to allows for up to 16x speed fast forward or fast backward
dedicated PC for continuous recording
8 local and remote IP cameras. A total of 2 NVRs can play. The step playback option displays one frame at
+ Live monitoring includes full-screen,
be combined and administered with D-Link’s bundled 16 a time. Additionally, users can enhance the recorded
snapshot and pan/tilt/zoom (PTZ)
channel management software.
video with controls such as brightness, contrast, and
+ Precision playback with step/
Once cameras have been set up, a highly configurable
fast forward/rewind and video
scheduling system allows for continuous recording or During playback, if a user uncovers video that needs to
recording during specifically allotted timeframes. Each be exported, two formats are available. The AVI and ASF
+ Export video as AVI or ASF with
camera can be set to record independently at preset file formats will transpose a timestamp on the exported
intervals. The NVR also provides event recording based video. If a printer is connected to the user’s PC, the NVR
on specific triggers.
can also print the selected still image.
+ Calendar search and video preview
before playback
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)
The D-Link NVR ensures the security and integrity of Complete Network Functionality
Easy Setup and Configuration
IP camera footage. Administrators may filter external The D-Link NVR takes advantage of existing network
+ Directly connectable to the Internet
connections to the NVR by IP address, limiting access architecture, taking advantage of features such as PPPoE
(PPoE) without the need to install a
and thus increasing security. Administrators may also and ADSL services. The NVR can acquire an IP address
remote router
choose access privileges for users by specifying the from a DHCP server to become easily searchable during
+ Supports PPPoE, DHCP and Static IP
cameras they may access to for live view, playback, installation. Dynamic DNS is supported for systems
audio and PTZ functions.
operating without a fixed IP address. The NVR can then
be reached from the internet using an easy to remember
+ 2-bay SATA 3.5” HDD interface
Recorded data is stored in a secure database. This domain name provided by the DDNS service.
+ Up to 3TB of hard disk storage space
recorded data can be backed up to additional storage
of recorded video2
locations periodically or whenever needed. The NVR Maintaining an accurate record of time is essential
+ RAID 0/1 and JBOD support
also includes the option to protect data using a RAID 1 if recorded data is to be used as evidence. To ensure
configuration. RAID 1 duplicates the recordings database that the recorded time is always accurate, the NVR can
Dependable Data Security
onto two separate drives. In the event of an HDD failure, update the system clock from an internet server using
data integrity is maintained on the secondary HDD.
the Network Time Protocol (NTP).
+ Protects important surveillance files
with automatic backups to mirrored
A UPS can be used as emergency power supply for the
hard drives using RAID 1 technology3
D-ViewCam NVR Software
NVR. The UPS uses a USB interface to notify the NVR The D-LinkCam NVR software bundled with the D-Link
+ USB connection to UPS possible for
to perform a proper shutdown before battery power runs NVR consists of three main components: Playback
power failure notification
out. In the event of a power failure without a UPS, the Manager, Backup and File Manager, and Multi-NVR
NVR will boot up automatically once power is restored.
Viewer. The “Multi-NVR Viewer” supports simultaneous
Flexible and Scalable
display of up to 16 channels. Easily organize the view by
+ Allows connection of up to 2 NVRs
Of course, the security of data is irrelevant unless the directly dragging and dropping video onto the display
together to 16 cameras and managing
device itself is protected from theft. For this reason, the window. Cameras managed by the NVR can be viewed as
them as a group
sleek NVR enclosure is compact and easy to conceal in individual sites or categorized into groups. The “Playback
a secure remote location. A front panel lock protects the
+ Stand-alone device: Eliminates the
Manager” includes a clean and simple web GUI interface
HDD and a rear panel lock can be used to secure the NVR
need for a dedicated PC
that allows users to play, search or export video. The
with a cable.
“Backup and File Manager” is a flexible backup utility
+ Supports D-Link and 3rd party network
that simplifies the process of backing up video data from

the NVR to external storage.
1 Available only in DNS-726-4 and can view both
Network Setup Using D-Link NVR
DNS-722-4 and DNS-726-4
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 lowest-
sized 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.
4 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
(DNS-726-4 only), snapshot, full
+ Auto backup the Video of
I/O ports
screen, digital zoom
previous day to FTP server
+ RJ45 port x1
+ Linux
Remote Playback Control
System Status
+ DC-in jack x1
+ USB port for UPS status update
Supported Cameras
+ Playback with normal, fast
+ Camera status, System status
forward/rewind and step
+ DNS-722-4: Supports all D-Link
+ Still picture EMAP suppport
network cameras. Includes
Power Adapter
support for auto-discovery, and
+ Smart Search (DNS-726-4 only)
Network Service Protocols
up to 1.3 megapixel resolution.
Intelligent detection function:
+ DC12V/3A, DC5V/3A
General Motion, Missing
+ DNS-726-4: Supports known-
Object, Foreign Object, Camera
Reset Button
brand network cameras
+ DHCP Client
Occlusion, Lose Focus
including D-Link, Axis,
+ NTP Client (D-Link)
+ Reset to factory default
Panasonic, Sony, Mobotix,
+ DNS Client
Arecano, IQinVision, Cisco and
Remote Playback
Acti Specific feature support
+ Supported via IE and NVR client
+ DDNS Client (D-Link)
+ Front panel lock
depends on software.
+ Playback system with timeline
+ SMTP Client
+ Device lock hole
GUI, search by event, area,
+ HTTP Server
Recording Performance
cameras, date and time
Power Consumption
+ Up to 120fps at D1/240fps at CIF
+ DNS-722-4: IE & NVR client
for 8 channels
+ UPnP
support 1 channel playback
+ Max. power consumption:
+ IP filtering
+ DNS-726-4: IE & NVR client
Camera Search
support 8 channel simultaneous
+ Standby state max. power
consumption: 7.26W
+ UPnP
playback, and intelligent search
User Interface
by general motion, missing
+ Internet Explorer v6 or later
Dimension (W x D x H)
Audio & Video Recording
+ NVR Search utility
+ 198 (W) x 104 (D) x 132 (H) mm
+ Synchronized audio & video
+ Digital zoom to specified area
Hardware Specifications
(7.8 x 4.1 x 5.2 inches)
Overwrite Recording
Compression Format
+ Auto recycling when disk
+ IEEE 802.3/u/z
+ H.264, MPEG-4, M-JPEG (for
storage is full
+ Auto MDI/MDI-X
+ 1.23 kg (2.7 lbs)
supported cameras)
File Export
Operating Temperature
Video Setting
+ Export videos to “AVI” or “ASF”
0˚ to 55˚ C (32˚ to 131˚ F)
+ Resolution, quality, frame rate,
enable audio, go to camera
+ HDD control & manage via PC
+ Export images to “BMP” or
Storage Temperature
“JPG” file
+ Reformat Disk
-20˚ to 70˚ C (-4˚ to 158˚ F)
+ RAID 0, 1
Recording Type
User Account
+ DNS-722-4: record by schedule,
+ Additional accounts can be
+ Operating: 5% to 90% (non-
manual record and event-based
created to allow user access
Two Reset modes
recording (Motion detection
to the system, and specify
from camera)
authorization for camera
+ Reset firmware GUI button
Package Contents
+ DNS-726-4: recording by
channels, PTZ, etc.
+ HW reset button (hold for 5
+ 2-Bay NVR
schedule, manual and event (DI
trigger, motion detection from
+ Power Adapter
+ D-Link DDNS server support
Flash ROM
+ Ethernet Cable
+ 32MB
+ Quick Installation Guide
Remote Live View
System Time
+ Power Cable Holder
+ Supported via IE remote live
+ Set the system time (D-Link NTP,
+ Keys
input time, sync with computer,
+ 128MB DDR
+ Maximum 8 simultaneous
Daylight Saving Time)
+ CD-ROM with:
Network Interface
- Software
Remote Backup
+ Gigabit Ethernet LAN port
- Product Documentation
Remote Live View Control
+ Remote software can backup
(10/100/1000 Mbps)
+ Live view, preset/go, patrol,
raw data to redundant storage
focus, PTZ functions, remote IO

DNS-722-4 / DNS-726-4
D-Link NVR Comparison
Surveillance Product 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)