VIVOTEK does not support Windows 7 embedded upgrade service on NVR products. Windows Embedded Standard 7 Service Pack 1 cannot be directly upgraded to Windows 10.

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.


  • 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
  • Device
  • NR9581
  • OS
  • Embedded Windows 7
  • (*Please refer to VIVOTEK Website for more information about Win7/Win10 embedded upgrade)
  • Hardware + Software
  • Power Restoration
  • System Restart Automatically after Power Recovery
  • Local Display
    LiveView Display
  • 32 Channels
  • Multi-Layout Display: 1x1, 2x2, 1+5, 3x3, 1+12, 4x4, 5x5, 1+31,8x8, 1P+2, 1P+6, 1P+8, 2V, 3V, 4V, 2V+3
  • Single Layout Display, Full Screen Display, Sequential Display
  • Video Output
  • HDMI x1, Display Port x1, VGA x1, DVI x1
  • Display Resolution
  • HDMI: 3200x2000
  • DP: 3200x2000
  • VGA/DVI: 1920x1200
  • Dual Monitor
  • Supported
  • Camera Position
  • Change the viewcell position on the Live View screens
  • Stream Application
  • Stream Selection & Auto Stream Size
  • Monitor Enhancement
  • Drag & 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 Dewarp
  • 1O, 1P, 1R, 1P2R, 1P3R, 1O3R, 1O8R, 2P, 4R, 4R Pro
  • PTZ Operation
  • Direction Control, Home, Zoom, Focus, Iris, Preset, Patrol (Group), Pan, Stop, Speed
  • Video
    Video Format
  • H.265, H.264 SVC, H.264 AVC, MPEG4, MJPEG
  • Graphic Decoder
  • Software decoding
  • Decoding Resolution
  • Up to 8192x8192
  • Decoding Capability
  • H.264: 1920x1080 @ 300 fps
  • H.265: 1920x1080 @ 150 fps
  • Audio
    Audio Format
  • G.711, G.726, AMR, AAC
  • Audio In/Out
  • Microphone audio jack Input x1
  • 3.5 Line input audio jack x1
  • 3.5 Line output audio jack x1
  • 2-way Audio
  • Supported
  • Record
    Recording Time (sec.)
  • Pre-Record: 3-15
  • Post-Record: 10-60
  • Recording Stream
  • Single/Multiple
  • Recording Throughput
  • 512 Mbps
  • Recording Mode
  • Continuous, Schedule, Manual, Event, Activity Adaptive Streaming
  • Recording Setting
  • Recycle (unit: Size or Day)
  • Seamless Recording
  • Supported
  • Storage & Backup
    HDD Devices
  • Hot-Swappable Tray x8
  • *HDD is purchased by separately.
    HDD Max. Capacity *Please refer to recommended HDD list on the VIVOTEK website.
  • RAID 0, 1, 5, 6, 10
  • Disk Management
  • Create, Format and Remove Disk
  • Video Clip Export
  • USB Dongle (FAT Format)
  • NAS (SMB & CIFS)
  • Schedule Backup
  • NAS (SMB & CIFS)
  • Playback
    Playback Display
  • 16 Channels
  • Multi-Layout Display: 1x1, 2x2, 1+5, 3x3, 1+12, 4x4, 2V, 3V, 4V, 2V+3
  • Single Layout Display, Full Screen Display, Sequential Display
  • Playback Control
  • Play, rewind, pause, stop, next/previous video start, next/previous frame, 1/8X ~ 64X speed control, bookmark
  • Video Search
  • Browsing, date & time (fast), event, bookmark, alarm, log, timeline, timeline scale
  • Snapshot
  • BMP & JPEG
  • Video Clip Export
  • AVI, 3GP & EXE
  • Network
  • 10/100/1000Mbps Ethernet (RJ-45) x2
  • Video Throughput for Remote Client
  • 400 Mbps
  • Protocols
  • Alarm Management
    Alarm Period (sec.)
  • Max. 30
  • Alarm Filter
  • Name, time, source, event type, state
  • Alarm Setting
  • LiveView alarm notification: fixed & popup, alert sound
  • Schedule Type
  • Continuous, schedule, manual
  • Camera Event
  • Motion, 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 Status
  • Connection status, recording status, recording error
  • Substation
  • Substation connection status, substation DI/DO trigger*
  • *(ND series NVR)
    Storage Status
  • Storage connection status, storage capacity status
  • Station Status
  • License status, network status, virtual memory status
  • External Devices Event
  • DI/O (with I/O box)
  • Action
  • Email, start recording, move to preset location, set DO, GSM short message, HTTP & client notification
  • Alarm State for Management
  • New, assigned, in progress, resolved, closed, later, reject, ignore
  • Alarm Result Export
  • .csv File
  • eMap
  • Import picture
  • Device
  • Camera, external DI/O, substation camera, substation DI/O*
  • *(ND series NVR)
  • Add, remove, direction control, PTZ control & indicator LiveView
  • Event Notification
  • Event icon light flash, show live streaming on eMap
  • External Interface
  • USB 2.0 x4
  • USB 3.0 x2
  • Audio
  • Microphone audio jack Input x1
  • 3.5 Line input audio jack x1
  • 3.5 Line output audio jack x1
  • System
    POS Integration
  • Supported
  • UPS Integration
  • Supported
  • Camera Integration
  • ONVIF core spec 2.2 or later
  • I/O Box Integration
  • Advantech ADAM-6000 Series
  • User Management
  • Authentication: Basic Account / Windows AD Account
  • User Account: 1024
  • User Account Time Limit: No limitation, By Time & By Day
  • User Account Time Schedule: Weekly Setting
  • User Level: Administrator / Power User / User / Operation / Guest
  • Log
  • Operation, system and event log
  • Date & Time
  • Sync server
  • Advanced Features
    VCA Counting Solution
  • Supported
  • Failover
  • Supported
  • Remote Client
    Software AP
  • Shepherd, VAST
  • Mobile/Tablet App
  • iViewer (Android & iOS)
  • Web Browser
  • Internet Explorer 9 (32 bit) or above
  • General
    Power Input
  • Redundant power 100~220V AC
  • Power Consumption
  • Max. 740 W
  • Redundant Power
  • Supported
  • 80 Plus Certified
  • Platinum
  • Dimensions
  • 89 (H) x 437 (W) x 648 (D) mm
  • Weight
  • 27 kg (Without HDD)
  • Operating Temperature
  • 5°C ~ 35°C (41°F ~ 95°F)
  • Humidity
  • 0 ~ 95%
  • Safety Certifications
  • CE, LVD, FCC, VCCI, C-Tick, UL
  • Warranty
  • 36 months
  • Datasheets Download
    QIG Download
    User's Manuals Download


    Recommended HDD List

    * 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.