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 4 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 4 cameras
D-Link’s intuitive GUI interface simplifi es viewing live The NVR centrally controls the digital output, e-mail
from anywhere in your home or offi ce,
and recorded video from the NVR. The camera status notifi cations 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 notifi cations
displayed for each NVR.
via e-mail or output devices. Users can set up multiple
Convenient Interface
contact lists for event notifi cation. 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
identifi cation. 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 specifi ed 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 simplifi es event
Extensive Recording Functionality
can instantly begin playback. The DNS-726-4 supports
A clear single-page interface assists with confi guration 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
4 local and remote IP cameras. A total of 4 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 confi gurable
fast forward/rewind and video
scheduling system allows for continuous recording or During playback, if a user uncovers video that needs to
recording during specifi cally allotted timeframes. Each be exported, two formats are available. The AVI format
+ Export video as AVI or ASF with
camera can be set to record independently at preset will export raw video. The ASF fi le format will transpose a
intervals. The DNS-726-4 also provides event recording timestamp on the exported video. If a printer is connected
based on specifi c triggers.
to the user’s PC, the NVR can also print the selected still
+ Calendar search and video preview
before playback
The NVR can be confi gured 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 notifi cation can be sent via e-mail or to an external
device such as an audible alarm or LED display via the
DI/DO interface.

DNS-722-4 / DNS-726-4
2-Bay Network Video Recorder (NVR)
Comprehensive Data and Hardware Security
Complete Network Functionality
Easy Setup and Configuration
The D-Link NVR ensures the security and integrity of The D-Link NVR takes advantage of existing network
+ Directly connectable to the Internet
IP camera footage. Administrators may filter external architecture, taking advantage of features such as PPPoE
(PPoE) without the need to install a
connections to the NVR by IP address, limiting access and ADSL services. The NVR can acquire an IP address
remote router
and thus increasing security. Administrators may also from a DHCP server to become easily searchable during
+ Supports PPPoE, DHCP and Static IP
choose access privileges for users by specifying the installation. Dynamic DNS is supported for systems
cameras they may access to for live view, playback, operating without a fixed IP address. The NVR can then
audio and PTZ functions.
be reached from the internet using an easy to remember
+ 2-bay SATA 3.5” HDD interface
domain name provided by the DDNS service.
+ Up to 3TB of hard disk storage space
Recorded data is stored in a secure database. This
of recorded video2
recorded data can be backed up to additional storage Maintaining an accurate record of time is essential
+ RAID 0/1 and JBOD support
locations periodically or whenever needed. The NVR if recorded data is to be used as evidence. To ensure
also includes the option to protect data using a RAID 1 that the recorded time is always accurate, the NVR can
Dependable Data Security
configuration. RAID 1 duplicates the recordings database update the system clock from an internet server using
onto two separate drives. In the event of an HDD failure, the Network Time Protocol (NTP).
+ Protects important surveillance files
data integrity is maintained on the secondary HDD.
with automatic backups to mirrored
hard drives using RAID 1 technology3
D-ViewCam NVR Software
A UPS can be used as emergency power supply for the The D-ViewCam NVR software bundled with the D-Link
+ USB connection to UPS possible for
NVR. The UPS uses a USB interface to notify the NVR NVR consists of three main components: Playback
power failure notification
to perform a proper shutdown before battery power runs Manager, Backup and File Manager, and Multi-NVR
out. In the event of a power failure without a UPS, the Viewer. The “Multi-NVR Viewer1” supports simultaneous
Flexible and Scalable
NVR will boot up automatically once power is restored.
display of up to 16 channels. Easily organize the view by
+ Allows connection of up to 4 NVRs
directly dragging and dropping video onto the display
together to 16 cameras and managing
Of course, the security of data is irrelevant unless the window. Cameras managed by the NVR can be viewed
them as a group
device itself is protected from theft. For this reason, the as individual sites or categorized into groups. The
sleek NVR enclosure is compact and easy to conceal in
+ Stand-alone device: Eliminates the
“Playback Manager” includes a clean and simple web
a secure remote location. A front panel lock protects the
need for a dedicated PC
GUI interface that allows users to play, search or export
HDD and a rear panel lock can be used to secure the NVR video. The Backup and File Manager” is a flexible backup
+ Supports D-Link, Sony, Panasonic and
with a cable.
utility that simplifies the process of backing up video data
Axis network cameras4 with smart PTZ
from the NVR to external storage.
camera control
Network Setup Using D-Link NVR
1 Available only in DNS-726-4
2 Hard drive(s) not included with the NVR. An
internal 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,
4 Channel Live View
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 Sony, Panasonic and Axis cameras support
available on DNS-726-4 Professional NVR only.

DNS-722-4 / DNS-726-4
Firmware Specifications
Remote Playback
User Interface
+ Supported via IE and NVR client
+ Internet Explorer v6 or later
+ Linux
+ Playback system with timeline GUI, search by
+ NVR Search utility
event, area, cameras, date and time
Supported Cameras
+ DNS-722-4: IE & NVR client support 1 channel
Hardware Specifications
+ DNS-722-4: Supports all D-Link network
cameras. Includes support for auto-discovery,
+ DNS-726-4: IE & NVR client support 4 channel
+ IEEE 802.3/u/z
and up to 1.3 megapixel resolution.
simultaneous playback, and intelligent search
+ Auto MDI/MDI-X
+ DNS-726-4: Supports known-brand network
by general motion, missing object.
cameras including D-Link, Axis, Panasonic,
+ Digital zoom to specified area
and SONY. Specific feature support depends
on software.
Overwrite Recording
+ HDD control & manage via PC
Recording Performance
+ Auto recycling when disk storage is full
+ Reformat Disk
+ Up to 120fps (NTSC) / 100fps (PAL) at D1
File Export
+ RAID 0, 1
Camera Search
+ Export videos to “AVI” or “ASF” file
(ASF with timestamp)
+ UPnP
+ Export images to “BMP” or “JPG” file
Two Reset modes
Audio & Video Recording
+ Reset firmware GUI button
User Account
+ Synchronized audio & video recording
+ HW reset button (hold for 5 seconds)
+ Additional accounts can be created to allow
Compression Format
user access to the system, and specify
Flash ROM
authorization for camera channels, PTZ, etc.
+ MPEG-4, M-JPEG (for supported cameras)
+ 32MB
Video Setting
+ D-Link DDNS server support
+ Resolution, quality, frame rate, enable audio,
+ 128MB DDR
go to camera interface
System Time
Network Interface
Recording Type
+ Set the system time (D-Link NTP, input time,
+ Gigabit Ethernet LAN port (10/100/1000 Mbps)
sync with computer, Daylight Saving Time)
+ DNS-722-4: record by schedule, manual
I/O ports
Remote Backup
+ DNS-726-4: recording by schedule, manual
+ RJ45 port x1
+ Remote software can backup raw data to
and event (DI trigger, motion detection from
redundant storage
+ DC-in jack x1
+ USB port for UPS status update (optional)
System Status
Remote Live View
+ Camera status, System status
Power Adapter
+ Supported via IE remote live viewer
+ DC12V/3A, DC5V/3A
+ Maximum 4 simultaneous channels
Network Service Protocols
Reset Button
Remote Live View Control
+ DHCP Client
+ Reset to factory default
+ Live view, preset/go, patrol, focus, PTZ
functions, remote IO (DNS-726-4 only),
+ NTP Client (D-Link)
snapshot, full screen, digital zoom
+ DNS Client
+ Front panel lock
+ DDNS Client (D-Link)
Remote Playback Control
+ Device lock hole
+ SMTP Client
+ Playback with normal, fast forward/rewind
and step forward/rewind
+ HTTP Server
Power Consumption
+ Smart Search (DNS-726-4 only) Intelligent
+ Max. power consumption: 23.59W
detection function: General Motion, Missing
+ UPnP
+ Standby state max. power consumption:
Object, Foreign Object, Camera Occlusion,
+ IP filtering
Lose Focus

DNS-722-4 / DNS-726-4
Dimension (W x D x H)
+ 198 (W) x 104 (D) x 132 (H) mm
Supported D-Link Cameras*
(7.8 x 4.1 x 5.2 inches)
Fixed Network Camera
+ 1.23 kg (2.7 lbs)
Fixed Network Camera
Fixed Network Camera
Operating Temperature
Audio Network Camera
+ Operating: 0˚ to 40˚ C (32˚ to 104˚ F)
+ Storage: -20˚ to 50˚ C (-4˚ to 122˚ F)
Wireless G Audio Network Camera
Megapixel Network Camera
Wireless Network Camera with 3G Mobile Video
+ Operating: 5% to 90% (non-condensing)
Wireless Megapixel Network Camera
Package Contents
Megapixel PoE Network Camera
+ 2-Bay NVR
2-Way Audio Network Camera
+ Power Adapter
Wireless 2-Way Audio Network Camera
+ Ethernet Cable
Day and Night PoE Camera
+ Quick Installation Guide
18x PoE Network Camera
+ Power Cable Holder
+ Keys
Wireless Day & Night Network Camera
+ CD-ROM with:
Wireless PT Network Camera with 3G Mobile Video
- Software
10/100 Mbps Pan/Tilt Network Camera
- Product Documentation
802.11g Wireless Audio Network Camera with Pan/Tilt
2.6x PTZ PoE Network Camera
Fixed Dome PoE Network Camera
D-Link NVR Comparison
WDR Fixed Dome Day & Night Network Camera
PTZ Network Camera
Simultaneous Playback
1 Channel
4 Channels
802.11g PTZ Network Camera
Live View

* Please visit the D-Link web site for an updated list of supported cameras
UPS Support w/ USB

Export Image/Video
Surveillance Product Comparison

Physical Security

RAID Support

Low Total Cost of Ownership

Remote Backup

Low Power Consumption

Scheduled/Manual Recording

Camera Power over Ethernet

Event Recording (I/O, motion)

High Stability

Supports D-Link Cameras

Compact Size

Supports Additional Cameras

Feasible Redundant Power

Smart Search

Immune to Viruses and Malware

Remote I/O Support

Powerful Management Software

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.
©2009 D-Link Corporation. All rights reserved.
Release 03 (February 2009)