Dahua NVR608RH-128-XI 128-Channel WizMind AI Network Video Recorder with 8 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 NVR608RH-128-XI 128-Channel WizMind AI Network Video Recorder with 8 HDD Bays, RAID, Redundant Power & 8K Output
The Dahua NVR608RH-128-XI is part of Dahua’s premium WizMind NVR6-XI series, engineered for demanding enterprise, government, industrial, and critical infrastructure surveillance applications. It supports up to 128 IP camera channels with resolutions up to 32MP, making it suitable for very large-scale multi-site security deployments. Powered by an industrial-grade processor and embedded Linux operating system, the recorder delivers up to 1280 Mbps incoming, 1280 Mbps recording, and 1024 Mbps outgoing bandwidth, ensuring stable performance even under heavy multi-stream workloads. It supports high-resolution decoding up to 32-channel 1080p@30fps (or equivalent combinations depending on AI mode), allowing efficient multi-screen monitoring. The system integrates advanced WizMind AI capabilities, including face detection and recognition, video metadata analysis (humans, vehicles, non-motor vehicles), perimeter protection, SMD Plus, AcuPick smart search, ANPR, people counting, crowd distribution analysis, and heat map generation. These functions significantly improve detection accuracy and reduce false alarms in complex environments. For storage, the NVR supports 8 SATA HDD bays, each supporting up to 20TB capacity, with full RAID 0/1/5/6/10 support for redundancy and data protection. It also includes hot-swappable drive capability and supports N+M cluster deployment and iSCSI expansion, making it highly scalable and fault-tolerant.
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, AcuPick, ANPR, video metadata
- Perimeter protection and crowd/behaviour analytics
- Supports up to 8 HDD bays (up to 20TB each)
- RAID 0/1/5/6/10 storage protection
- Hot-swappable HDD design
- Redundant power supply
- N+M cluster and iSCSI expansion support
- 8K HDMI video output
- ONVIF compatible with third-party cameras
- Embedded Linux operating system
- Enterprise-grade rack design for large installations
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