Dahua NVR616RH-128-XI 128-Channel WizMind AI Network Video Recorder with 16 HDD Bays, RAID, Redundant Power & 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 NVR616RH-128-XI 128-Channel WizMind AI Network Video Recorder with 16 HDD Bays, RAID, Redundant Power & 8K Output
The Dahua NVR616RH-128-XI is part of Dahua's flagship WizMind NVR6-XI Series, engineered to deliver intelligent video management, exceptional reliability and enterprise-class scalability. Supporting up to 128 IP camera channels with resolutions of up to 32MP, it provides comprehensive surveillance coverage for large commercial buildings, transport hubs, industrial facilities, campuses and critical infrastructure environments. Powered by an industrial-grade processor and embedded Linux operating system, the recorder offers up to 1280 Mbps incoming bandwidth, 1280 Mbps recording bandwidth and 1024 Mbps outgoing bandwidth, ensuring smooth operation even when managing hundreds of high-resolution video streams. Advanced decoding capabilities support up to 32 channels of 1080p video at 30fps, enabling efficient monitoring and playback across multiple displays. The NVR incorporates powerful WizMind AI technologies, including face detection and recognition, video metadata analysis, perimeter protection, SMD Plus, AcuPick intelligent search, ANPR integration, heat mapping, people counting, crowd distribution analysis and PPE detection. The recorder supports up to 40 face databases containing 300,000 face images, making it ideal for advanced security and forensic search applications.
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
- AI by Recorder: Face detection, face recognition, video metadata, perimeter protection and SMD Plus
- Supports up to 64-channel AcuPick intelligent search
- Face database capacity of up to 300,000 face images
- AI by Camera support for ANPR, heat maps, people counting and PPE detection
- 16 SATA HDD bays, supporting up to 20TB per HDD
- RAID 0, 1, 5, 6 and 10 support
- Hot-swappable HDD design
- Redundant power supply for maximum uptime
- N+M cluster deployment support
- iSCSI storage expansion
- 8K HDMI video output
- H.265+, H.265, H.264+ and H.264 video compression
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