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After a recent Windows update, NR9X81 may encounter some issues due to its system parameters being unexpectedly rewritten. It is highly recommended to renew the patch by following the download document to avoid these issues. Download

Thank you for your understanding and for supporting VIVOTEK Products.


Key Features

  • H.265/H.264 Compression Technology
  • 32-CH Recording, 1+31 Display
  • Support HDMI, Display Port, VGA and DVI Simultaneous Output
  • 8 Hot-Swappable HDD Bays
  • Support RAID 0/1/5/6/10 Storage
  • Max Support up to 80TB HDD
  • Redundant Power
  • VIVOTEK VAST Inside (LiveClient/Playback)
  • Dual Lan Giga Network Ports
  • ONVIF Open Platform



VIVOTEK’s NR9581 is a full-featured high-performance H.265 NVR. Equipped with a 2U 32-CH 8 Bay Rackmount network appliance, standard RAID capability and H.265 video codec, the total storage capacity of the NVR also endows the NR9581 with scalability and flexibility, making it perfect for large-scale transport or industrial applications as well as public spaces such as campuses.

The NR9581’s 8 hard-drive bay design provides for a storage capacity of up to 80TBs, offering greater than 30% ~ 50% more recording capacity than systems employing H.264 compression. This advance affords users larger storage space for longer durations of video recording. The RAID 0/1/5/6/10 configuration provides further data security in the rare event of a hard drive failure. Further, equipping the NR9581 with a DOM system has resulted in reliability and stability beyond the reach of other NVRs. Meanwhile, the NR9581 supports VIVOTEK’s fisheye network camera “Fisheye Dewarp” function, which provides multiple de-warping modes in live view and playback, ensuring the correct angle of video view and detailed information for flexible usage. This ingenious NVR is also equipped to carry out remote management with a full range of the server/client structures and thus constitutes a robust system for diverse applications.

Moreover, the NR9581 features well-built ONVIF compliance and scalable configuration, with VAST CMS empowering users to set up and manage advanced IP surveillance systems with ease. The NR9581 also supports both remote and mobile access via iViewer app, for both iOS and Android handheld devices. The NR9581 represents a great advance in the field, providing users an open, intelligent and seamless NVR to meet market demands.





System Structure




Hardware Information

OSEmbedded Windows
Flash64 G SATA DOM
WatchdogHardware + Software
Power RestorationSystem Restart Automatically after Power Recovery
Local Display
LiveView Display32 Channels
Multi-Layout Display: 1×1, 2×2, 1+5, 3×3, 1+12, 4×4, 5×5, 1+31,8×8, 1P+2, 1P+6, 1P+8, 2V, 3V, 4V, 2V+3
Single Layout Display, Full Screen Display, Sequential Display
Video OutputHDMI x1, Display Port x1, VGA x1, DVI x1
Display ResolutionHDMI: 3200×2000
DP: 3200×2000
VGA/DVI: 1920×1200
Dual MonitorSupported
Camera PositionChange the viewcell position on the Live View screens
Stream ApplicationStream Selection & Auto Stream Size
Monitor EnhancementDrag & Drop, Remote I/O Control, PiP (Digital Zoom), Instant Replay, De-interlace, Video Display Mode (Aspect Ratio, Hide Borders, Keep Top/Down Borders), Video Enhancement (Basic Mode: Brightness, Contrast, Saturation, Hue; Intelligent Mode: Defog, Rain, Snow, Fire / Smoke)
Fisheye Dewarp1O, 1P, 1R, 1P2R, 1P3R, 1O3R, 1O8R, 2P, 4R, 4R Pro
PTZ OperationDirection Control, Home, Zoom, Focus, Iris, Preset, Patrol (Group), Pan, Stop, Speed
Video FormatH.265, H.264 SVC, H.264 AVC, MPEG4, MJPEG
Graphic DecoderSoftware decoding
Decoding ResolutionUp to 8192×8192
Decoding CapacityH.264: 1920×1080 @ 300 fps
H.265: 1920×1080 @ 150 fps
Camera PositionChange the viewcell position on the Live View screens
Audio FormatG.711, G.726, AMR, AAC
Audio In/OutMicrophone audio jack Input x1
3.5 Line input audio jack x1
3.5 Line output audio jack x1
2-way AudioSupported
Recording Time (sec.)Pre-Record: 3-15
Post-Record: 10-60
Recording StreamSingle/Multiple
Recording Throughput512 Mbps
Recording ModeContinuous, Schedule, Manual, Event, Activity Adaptive Streaming
Recording SettingRecycle (unit: Size or Day)
Seamless RecordingSupported
Storage & Backup
HDD DevicesHot-Swappable Tray x8
HDD Max. Capacity10 TB x 8
RAIDRAID 0, 1, 5, 6, 10
Disk ManagementCreate, Format and Remove Disk
Video Clip ExportUSB Dongle (FAT Format)
Schedule BackupNAS (SMB & CIFS)
Playback Display16 Channels
Multi-Layout Display: 1×1, 2×2, 1+5, 3×3, 1+12, 4×4, 2V, 3V, 4V, 2V+3
Single Layout Display, Full Screen Display, Sequential Display
Playback ControlPlay, rewind, pause, stop, next/previous video start, next/previous frame, 1/8X ~ 64X speed control, bookmark
Video SearchBrowsing, date & time (fast), event, bookmark, alarm, log, timeline, timeline scale
SnapshotBMP & JPEG
Video Clip ExportAVI, 3GP & EXE
Ethernet10/100/1000Mbps Ethernet (RJ-45) x2
Video Throughput for Remote Client400 Mbps
Alarm Management
Alarm Period (sec.)Max. 30
Alarm FilterName, time, source, event type, state
Alarm SettingLiveView alarm notification: fixed & popup, alert sound
Schedule TypeContinuous, schedule, manual
Camera EventMotion, DI/O, video lost/restore, PIR, tampering, temperature, IR, PPTZ, line crossing detection, loitering detection, field detection, audio detection, SD card life expectancy detection, shock detection, ONVIF motion event, ONVIF DI/O, ONVIF video lost/restore
Camera StatusConnection status, recording status, recording error
SubstationSubstation connection status, substation DI/DO trigger*
*(ND series NVR)
Storage StatusStorage connection status, storage capacity status
Station StatusLicense status, network status, virtual memory status
External Devices EventDI/O (with I/O box)
ActionEmail, start recording, move to preset location, set DO, GSM short message, HTTP & client notification
Alarm State for ManagementNew, assigned, in progress, resolved, closed, later, reject, ignore
Alarm Result Export.csv File
SourceImport picture
DeviceCamera, external DI/O, substation camera, substation DI/O*
*(ND series NVR)
MarkedAdd, remove, direction control, PTZ control & indicator LiveView
Event NotificationEvent icon light flash, show live streaming on eMap
External Interface
USBUSB 2.0 x4
USB 3.0 x2
AudioMicrophone audio jack Input x1
3.5 Line input audio jack x1
3.5 Line output audio jack x1
POS IntegrationSupported
UPS IntegrationSupported
Camera IntegrationONVIF Profile S
I/O Box IntegrationAdvantech ADAM-6000 Series
User ManagementAuthentication: Basic Account / Windows AD Account
User Account: 1024
User Account Time Limit: No limitation, By Time & Bay Day
User Account Time Schedule: Weekly Setting
User Level: Administrator / Power User / User / Operation / Guest
LogOperation, system and event log
Date & TimeSync server
Advanced Features
VCA Counting SolutionSupported
VCA EventSupported
Smart SearchSupported
Trend Micro IoT SecuritySupported
Remote Client
Software APShepherd, VAST
Mobile/Tablet AppiViewer (iOS/Android)
Web BrowserInternet Explorer 9 (32 bit) or above
Power InputRedundant power 100~220V AC
Power ConsumptionMax. 740 W
Redundant PowerSupported
80 Plus CertifiedPlatinum
Dimensions89 (H) x 437 (W) x 648 (D) mm
Weight27 kg (without HDD)
Operating Temperature5°C ~ 35°C (41°F ~ 95°F)
Humidity0 ~ 95%
Safety CertificationsCE, LVD, FCC, VCCI, C-Tick, UL
Warranty36 months



Link Datasheet


Support List

  • VIVOTEK Network Cameras: 7000 & 8000 & 9000 Series (MD7560X excluded)
  • VIVOTEK Switch: VivoCam PoE Switch (AW-GEV Series)

Device Pack


Supported HDD List

  Western Digital *  WD40PURX  4TB
   WD100PURZ  10TB
  Seagate  ST8000NM0055  8TB
  ST10000NM0086  10TB


* WD (Western Digital) is one of VIVOTEK’s SIA (Solution Integration Alliance) partners for developing customized features on an open platform. WD provides well maintain and repair service as VIVOTEK always do. For further direct service of WD HDD product, please refer to WD Global Warranty website.


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