Dahua NVR5432-XI/Pro – 32 Channel WizMind 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 NVR5432-XI/Pro – 32 Channel WizMind AI Network Video Recorder (2U, 8 HDD Bays)
The Dahua NVR5432-XI/Pro is a high-end 2U enterprise-grade network video recorder from Dahua’s WizMind XI/Pro series, built for large-scale surveillance environments that require maximum performance, storage scalability, and deep-learning AI analytics. It supports up to 32 IP camera channels and handles ultra-high-definition cameras up to 32MP resolution, making it suitable for forensic-level monitoring and advanced security operations. The system delivers strong decoding performance and can manage multiple high-resolution video streams simultaneously for smooth live view and playback. Powered by Dahua’s Xinghan large-scale AI models, the NVR provides intelligent analytics such as face detection and recognition, AcuPick smart search, WizSeek intelligent retrieval, Smart Motion Detection (SMD), perimeter protection, video metadata analysis, and ANPR (via compatible cameras). These features significantly improve detection accuracy while reducing false alarms and enabling rapid investigation of recorded footage.
KEY FEATURES
- 32 IP camera channels
- WizMind XI/Pro AI with Xinghan large-scale models
- Supports cameras up to 32MP resolution
- Face detection and face recognition
- AcuPick intelligent video search
- WizSeek smart retrieval system
- Smart Motion Detection (SMD)
- Perimeter protection with advanced filtering
- Video metadata analysis (people, vehicles, attributes)
- ANPR support (via compatible AI cameras)
- Up to 512 Mbps bandwidth (incoming/recording)
- Smart H.265+ compression
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