Dahua NVR5864-16P-EI – 64 Channel WizSense AI Network Video Recorder with 16 PoE Ports (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 NVR5864-16P-EI – 64 Channel WizSense AI Network Video Recorder with 16 PoE Ports (2U, 8 HDD Bays)
The Dahua NVR5864-16P-EI is a high-performance network video recorder from Dahua’s WizSense Series, developed for demanding security applications that require intelligent analytics, reliable recording, and scalable storage. With support for up to 64 IP camera channels, it provides a powerful surveillance platform for commercial buildings, industrial sites, logistics centres, educational campuses, transport hubs, and critical infrastructure projects. Equipped with 16 integrated PoE ports, the recorder simplifies system deployment by supplying both power and network connectivity directly to connected cameras. The built-in PoE functionality reduces installation costs and eliminates the need for separate PoE switches in many applications. Selected ports also support ePoE technology, enabling extended transmission distances over standard cabling. The recorder supports camera resolutions of up to 32MP and delivers up to 384 Mbps incoming, recording, and outgoing bandwidth, ensuring stable performance when managing multiple high-definition video streams. Advanced decoding capability allows smooth live viewing and playback across monitoring stations and control rooms.
KEY FEATURES
- Supports up to 64 IP camera channels
- 16 integrated PoE ports for camera connectivity
- ePoE support for extended transmission distances
- Supports camera resolutions up to 32MP
- WizSense AI-powered video analytics
- 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
- Decoding capability up to 32 × 1080p @ 30fps
- Dual HDMI and dual VGA outputs
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