Dahua NVR616H-128-XI 128-Channel WizMind AI Network Video Recorder with 16 HDD Bays, RAID & 8K Output
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 NVR616H-128-XI 128-Channel WizMind AI Network Video Recorder with 16 HDD Bays, RAID & 8K Output
The Dahua NVR616H-128-XI is part of Dahua's flagship WizMind NVR6-XI Series, engineered to meet the demands of enterprise, industrial and critical infrastructure security environments. Supporting up to 128 IP camera channels with resolutions up to 32MP, it provides comprehensive surveillance coverage for large and complex installations. Powered by an industrial-grade processor and embedded Linux operating system, the recorder delivers up to 1280 Mbps incoming bandwidth, 1280 Mbps recording bandwidth, and 1024 Mbps outgoing bandwidth, ensuring smooth operation even when managing large numbers of high-resolution cameras simultaneously. Advanced WizMind AI technology enables intelligent analytics directly within the recorder, including face detection and recognition, video metadata analysis, perimeter protection, SMD Plus, AcuPick intelligent search and ANPR integration. The system can manage up to 40 face databases containing 300,000 face images, making it suitable for high-security applications requiring advanced identification and forensic search capabilities. The NVR supports 16 SATA HDD bays, each accommodating drives up to 20TB, providing extensive storage capacity for long-term recording requirements. RAID 0/1/5/6/10 support, hot-swappable drive design, N+M cluster deployment and iSCSI storage expansion ensure maximum system resilience and data protection.
KEY FEATURES
- Supports up to 128 IP camera channels
- Maximum 1280 Mbps incoming and recording bandwidth
- Maximum 1024 Mbps outgoing bandwidth
- Supports camera resolutions up to 32MP
- Advanced AI by recorder including face detection and recognition
- 8-channel face detection and recognition
- 8-channel video metadata analysis
- 32-channel SMD Plus
- 32-channel perimeter protection
- Supports 64-channel AcuPick intelligent search
- Face database capacity of up to 300,000 images
- 16 SATA HDD bays, supporting up to 20TB per HDD
- RAID 0, 1, 5, 6 and 10 support
- Hot-swappable HDD design
- N+M cluster deployment support
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