Dahua NVR5864-EI – 64 Channel WizSense AI Network Video Recorder (2U, 8 HDD Bays)
Unless selecting a vari-focal camera (with an adjustable lens) It is important to select the correct camera lens option for where the camera is to be positioned. A smaller lens will give you a wider angle but will be "zoomed out more", while a bigger lens will narrow the angle down and "zoom in more". See below to give you some idea on angles of Megapixel HD Cameras:
| Lens in mm | Approx Viewing Angle (degrees) | Ideal Distance (metres) | Typical usage/notes |
|---|---|---|---|
| 2.8 | 106 | <6 | For seeing as much of the immediate area as possible such as above a doorway/low down/garage soffits (edges can appear slightly warped/distorted) - clearly "zoomed out" |
| 3.6/4 | 83-90 | <12 | A great general purpose option giving great coverage still in the corner of a room or higher up on second floor soffits with less distortion - more of a natural "zoom" |
| 6 | 56 | 6-20 | Narrows down the angle and zooms in to look past the immediate area a little to gain more detail - down a driveway for example from higher up |
| 12 | 24 | 20+ | Zooms in significantly more to look at a gate, entrance or adjascent building |
| 16 | 19 | 24+ | As above but more so |
The amount of hard drive space you require is dictated by how many cameras, as well as their resolution and frame rate settings. Finally you can often make your storage space last a lot longer by enabling motion detected recording rather than continuous, especially if there are long periods of no activity.
|
Resolution (Megapixels) |
Days of storage provided by 1TB per camera (continuous - full 25 frames per second) |
Days of storage provided by 1TB per 4 cameras (continuous - full 25 frames per second) |
Days of storage provided by 1TB per 4 cameras (50% motion- 15 frames per second) |
|---|---|---|---|
| 1 | 44 | 11 | 36 |
| 2 | 22 | 5 | 18 |
| 3 | 17 | 4 | 14 |
| 4 | 11 | 3 | 9 |
| 5 | 9 | 2 | 8 |
| 6 | 8 | 2 | 6 |
| 8 (4K) | 5 | 1 | 4 |
| 12 | 4 | 0.5 | 3 |
As a rule of thumb we recommend a minimum of 2 Terabytes per 4 x 2-4MP HD cameras, as this should give you 2 weeks to a month with a few adjustments on motion detected recording. You may only require the full 25 frames per second on certain cameras if things are fast moving.
(All of our hard drives come fitted and are CCTV specific from one of the major brands)
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Dahua NVR5864-EI – 64 Channel WizSense AI Network Video Recorder (2U, 8 HDD Bays)
The Dahua NVR5864-EI is a professional-grade 64-channel network video recorder from Dahua’s WizSense Series, engineered for large surveillance installations requiring advanced AI functionality, high storage capacity, and reliable system performance. Supporting up to 64 IP camera channels and camera resolutions of up to 32MP, the recorder provides exceptional image quality and scalability for applications such as enterprise facilities, industrial sites, educational campuses, transport infrastructure, retail centres, and critical security environments. The system delivers up to 384 Mbps incoming, recording, and outgoing bandwidth, ensuring stable recording and playback across multiple high-resolution video streams. Powered by Dahua’s WizSense AI platform, the NVR offers intelligent functions including face detection and face recognition, Smart Motion Detection Plus (SMD Plus), perimeter protection, AcuPick intelligent search, video metadata analysis, and ANPR through compatible AI cameras. These AI capabilities improve event detection accuracy, minimise false alarms, and significantly reduce investigation times. The recorder supports up to 20 face databases containing 20,000 face images, making it suitable for access control integration and intelligent security management applications. AcuPick technology enables rapid target retrieval across recorded footage, while metadata analysis provides detailed information about people and vehicles captured by supported AI cameras.
KEY FEATURES
- Supports up to 64 IP camera channels
- Supports camera resolutions up to 32MP
- WizSense AI analytics platform
- Face detection and face recognition
- Smart Motion Detection Plus (SMD Plus)
- Perimeter protection with intelligent classification
- AcuPick intelligent video search
- Video metadata analysis
- ANPR support via compatible AI cameras
- Up to 384 Mbps incoming, recording and outgoing bandwidth
- Maximum decoding capability of 32 × 1080p @ 30fps
- Dual HDMI and dual VGA outputs
- HDMI resolution up to 8K (7680 × 4320)
- Smart H.265+, H.265, Smart H.264+, H.264 and MJPEG compression
- 8 SATA HDD bays supporting up to 20TB each
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