AXIS D8248 Managed PoE++ 48 port switch for efficient network management
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, frame rate settings, and whether you have H.265 encoding enabled or not to save space (We advise turning it on to double the capacity shown below with ease).
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 (to perhaps double or more these figures again).
|
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 2 Terabytes for a 4 x 4/5MP HD camera setup, as this should give you approx 2 weeks using H.265 @ 20fps and that is on continuous, not motion-detected recording.
(You may only require the full 25 frames per second on certain cameras if things are fast-moving - ie above a till)
You can also use the Hikvision online calculator to work out what works best for you specifically: https://tools.hikvision.com/ca...
(All of our hard drives come fitted and are CCTV-specific from one of the major brands)
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AXIS D8248 Managed PoE++ 48-Port Network Switch
The AXIS D8248 Managed PoE++ Switch is a high-performance 48-port managed Gigabit network switch designed specifically for professional surveillance installations. Optimised for use with AXIS Camera Station and Axis network devices, it simplifies deployment, management and maintenance of large IP surveillance systems while delivering reliable high-power PoE connectivity. It is an ideal networking solution for commercial buildings, campuses, warehouses and critical infrastructure.
Featuring 48 Gigabit PoE ports, the AXIS D8248 provides a substantial 740W total PoE power budget to support a wide range of network devices. Eight ports support IEEE 802.3bt PoE++, delivering up to 90W per port for high-power devices such as PTZ cameras, radar units and network speakers, while the remaining ports provide up to 30W PoE+. Four integrated 10Gb SFP+ uplink ports offer high-speed fibre connectivity for backbone links and long-distance network expansion.
The switch includes an intuitive Axis graphical web interface with a live network topology view, making it easy to discover connected devices, monitor system health, reboot cameras remotely, perform cable diagnostics and manage the entire surveillance network from a single interface. An integrated DHCP server automatically assigns IP addresses to connected Axis devices, significantly reducing installation time.
Built with enterprise-class networking and cybersecurity features, the D8248 supports advanced Layer 2 switching with Layer 3 capabilities, including static routing, OSPF and RIP. Comprehensive security features such as IEEE 802.1X authentication, ACLs, DHCP snooping, HTTPS, TLS encryption and port security help protect critical surveillance infrastructure from unauthorised access.
Key Features
- 48-port managed Gigabit PoE network switch
- 740W total PoE power budget
- Eight IEEE 802.3bt PoE++ ports delivering up to 90W each
- Forty IEEE 802.3at PoE+ ports delivering up to 30W each
- Four 10Gb SFP+ fibre uplink ports
- Optimised for AXIS Camera Station surveillance systems
- Integrated DHCP server for automatic device discovery
- Intuitive graphical network topology interface
- Remote camera reboot and cable diagnostics
- Layer 2 switching with Layer 3 routing capabilities
- Advanced network security including IEEE 802.1X, ACLs and TLS
- Rack-mount steel chassis
- Five-year Axis warranty
The AXIS D8248 Managed PoE++ Switch delivers the performance, power and intelligent management required for modern IP surveillance systems, providing a scalable and secure networking platform for even the most demanding Axis installations.
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