EVS7048S-R - Controller Dahua Technology - Free user manual and instructions
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| Product Type | Network Video Recorder (NVR) / Controller |
| Brand | Dahua Technology |
| Model | EVS7048S-R |
| Number of Channels | 48 |
| Form Factor | 19-inch rackmount, 4U |
| Dimensions (W x D x H) | 440 x 468 x 174 mm (17.3 x 18.4 x 6.9 in) |
| Weight | 15 kg (33 lb) without HDDs |
| Power Supply | Redundant PSU, AC 100-240V, 50/60Hz, 250W |
| PoE Ports | 48 x PoE+ (IEEE 802.3af/at) with 450W budget |
| Recording Resolution | Up to 32MP @ 25/30 fps (depending on camera) |
| Video Compression | H.265, H.264, MJPEG |
| Hard Drive Bay | 8 x 3.5" SATA HDD, up to 16TB each, RAID 0/1/5/6/10 |
| RAID Support | RAID 0, 1, 5, 6, 10 |
| Network Interface | 2 x RJ45 10/100/1000 Mbps, 2 x SFP 1000 Mbps |
| Max Bandwidth | 800 Mbps (incoming) / 800 Mbps (outgoing) |
| Operating Temperature | 0°C to 45°C (32°F to 113°F) |
| Storage Temperature | -20°C to 70°C (-4°F to 158°F) |
| Humidity | 10% to 90% non-condensing |
| Cooling | 2 x hot-swappable cooling fans, front to back airflow |
| Maintenance | Clean air filters every 6 months; replace fans every 3 years |
| Safety Certifications | CE, FCC, UL |
| Spare Parts | PSU, fan module, HDD caddy, RAID battery (if applicable) |
| Repairability | Modular design; hot-swappable PSU and fans; HDDs and RAID controller replaceable |
| Warranty | 3 years standard |
Frequently Asked Questions - EVS7048S-R Dahua Technology
What is the maximum storage capacity of the EVS7048S-R?
The EVS7048S-R supports up to 8 hard drives of 16 TB each, giving a maximum raw storage of 128 TB before RAID overhead. Actual usable capacity depends on the RAID configuration.
Can the EVS7048S-R operate without a dedicated PoE switch?
Yes, the unit includes 48 PoE+ ports that can power IP cameras directly, eliminating the need for an external PoE switch.
What RAID levels are supported?
The controller supports RAID 0, 1, 5, 6, and 10, allowing for performance or redundancy configurations.
How do I access the EVS7048S-R from a remote location?
You can access the NVR via Dahua's P2P or DDNS services, or by using a VPN. The built-in web interface and mobile app (DMSS) allow remote viewing and playback.
What is the maximum recording resolution and frame rate?
The EVS7048S-R can record up to 32MP resolution at 25/30 fps per channel, depending on the camera's capabilities and total bandwidth.
Can I mix different brands of cameras with this NVR?
Yes, the NVR supports ONVIF Profile S, G, T, and Q, allowing interoperability with many third-party IP cameras. However, for full features, Dahua cameras are recommended.
How do I replace a failed hard drive without stopping recording?
The NVR supports hot-swappable hard drives when configured in a RAID 5 or 6 array. You can remove and replace a failed drive while the system continues recording on the remaining drives.
What is the power consumption of the EVS7048S-R?
Typical power consumption is 250-350W (including PoE output), depending on the number of cameras and drives installed.
Does the EVS7048S-R support audio recording?
Yes, it supports audio inputs for each channel (via audio cables or through HDMI audio extraction) and can record audio alongside video.
How do I update the firmware on the EVS7048S-R?
Firmware updates can be applied via the web interface under System > Upgrade. Download the latest firmware from Dahua's official website and upload it to the NVR. The system will reboot after installation.
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USER MANUAL EVS7048S-R Dahua Technology
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Product information
Brand : Dahua Technology
Model : EVS7048S-R
Category : Controller