Dahua NVR5464-EI2 – 64 Channel WizSense AI Network Video Recorder (1.5U, 4 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 NVR5464-EI2 – 64 Channel WizSense AI Network Video Recorder (1.5U, 4 HDD Bays)
The Dahua NVR5464-EI2 is part of Dahua’s latest WizSense NVR 5-EI2 Series, designed to deliver intelligent video surveillance with improved AI processing, higher decoding performance, and enhanced system efficiency for modern security installations. It supports up to 64 IP camera channels with camera resolutions of up to 32MP, making it suitable for large commercial buildings, warehouses, campuses, retail chains, and industrial monitoring systems. The recorder provides up to 448 Mbps incoming, recording, and outgoing bandwidth, allowing stable handling of multiple high-resolution video streams simultaneously. The system supports advanced AI capabilities under Dahua’s WizSense AI engine, including face detection and recognition, Smart Motion Detection (SMD Plus), perimeter protection, AcuPick intelligent search, video metadata analysis, and ANPR via compatible cameras. These functions help reduce false alarms and enable fast forensic search across large video datasets. A key upgrade in the EI2 platform is its expanded AI performance and improved decoding efficiency, allowing smoother multi-channel live view and playback. The system supports up to 40 × 1080p decoding at 30fps, depending on AI usage mode.
KEY FEATURES
- 64 IP camera channels
- WizSense EI2 AI platform
- Up to 32MP camera resolution support
- Up to 448 Mbps bandwidth (recording/incoming/outgoing)
- AI by Recorder: Face detection, SMD Plus, perimeter protection, metadata, AcuPick
- AI by Camera: Face recognition, ANPR, people counting, heat map, PPE detection
- AcuPick intelligent video search (all channels supported via camera AI)
- Smart Motion Detection Plus (SMD Plus)
- Video metadata analysis (humans, vehicles, non-vehicles)
- Up to 40 × 1080p @ 30fps decoding capability
- Smart H.265+, H.265, H.264 compression
- 4 × SATA HDD bays (up to 20TB per drive)
- iSCSI storage expansion support
- N+M cluster redundancy support
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