Dahua NVR608H-128-XI 128-Channel WizMind AI Network Video Recorder with 8 HDD Bays, RAID, 8K Output & High Bandwidth Performance
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 NVR608H-128-XI 128-Channel WizMind AI Network Video Recorder with 8 HDD Bays, RAID, 8K Output & High Bandwidth Performance
The Dahua NVR608H-128-XI is part of Dahua’s premium WizMind NVR6-XI series, engineered for large-scale and mission-critical surveillance applications such as airports, city surveillance, industrial sites, and commercial complexes. It supports up to 128 IP camera channels with resolutions up to 32MP, ensuring ultra-detailed video capture across extensive installations. With an industrial-grade processor and embedded Linux operating system, the NVR delivers up to 1280 Mbps incoming and recording bandwidth and 1024 Mbps outgoing bandwidth, enabling smooth handling of high-resolution multi-camera streams without performance loss. The system integrates Dahua’s powerful WizMind AI engine, offering intelligent video analytics such as face detection and recognition, video metadata analysis (humans and vehicles), perimeter protection, SMD Plus, AcuPick intelligent search, ANPR, people counting, heat mapping, and crowd distribution analysis. These AI functions improve accuracy, reduce false alarms, and enhance forensic investigation efficiency. For storage, the recorder supports 8 SATA HDD bays, each with up to 20TB capacity, and includes RAID 0/1/5/6/10 for data protection and redundancy. It also supports hot-swappable drives, N+M cluster deployment, and iSCSI storage expansion for scalable enterprise storage architectures.
KEY FEATURES
- Supports up to 128 IP camera channels
- Maximum 1280 Mbps incoming/recording bandwidth
- Supports camera resolutions up to 32MP
- Advanced AI: face recognition, SMD Plus, perimeter protection, AcuPick, ANPR, metadata analytics
- Supports 8 SATA HDD bays (up to 20TB per HDD)
- RAID 0, 1, 5, 6, 10 storage protection
- Hot-swappable HDD design for easy maintenance
- 8K HDMI output for ultra-high-definition monitoring
- N+M cluster and iSCSI storage expansion support
- Embedded Linux operating system
- ONVIF compatibility with third-party IP cameras
- Enterprise-grade rack-mount design for large deployments
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