NVR / Recorders › NVR824-128-R-IM-8G / 256-R-IM-16G
Uniview (UNV)NVR824-R-IM Series · 24× SATA RAID
24-SATA RAID Network Video Recorder · R-IM Series
NVR824-128-R-IM-8G / 256-R-IM-16G
128 / 256-channel network video recorder — 24 hot-swap SATA interfaces with RAID 0/1/5/6/10/50/60 and N+1 hot spare, two independent 4K HDMI outputs plus VGA, records cameras up to 12MP, with 768 Mbps incoming bandwidth and an optional redundant power supply.
12MP · max recordingUltra 265 · low storage2× HDMI 4K · + VGA independent24× SATA · up to 16 TB eachRAID 0/1/5/6/10/50/60 · + N+1 hot spareONVIF · Profile S/G/C/Q/A/T
Choose your size — two models on this page
Rule of thumb: count your cameras across the whole deployment, then leave room to grow — 128 channels in a 3U chassis covers a large single site; step up to the 256-R-IM-16G (a taller 4U chassis, not just more channels) for a multi-building campus or a central monitoring room aggregating several sites. Highlighted rows in the spec table below show every difference between the two. The -4G/-8G/-16G suffix indicates the built-in AI computing memory (RAM) capacity.
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The Uniview NVR824-R-IM Series is a 24-SATA network video recorder offered in two channel counts: NVR824-128-R-IM-8G (128-ch, 3U chassis) and NVR824-256-R-IM-16G (256-ch, 4U chassis). Both record cameras up to 12MP with Ultra 265 / H.265 / H.264 compression, output independently over two HDMI ports (each up to 4K) plus one VGA port, and support RAID 0/1/5/6/10/50/60 with N+1 hot spare and an optional second power supply for redundancy across 24 SATA interfaces each up to 16 TB. Third-party IP cameras connect via ONVIF conformance (Profile S, G, C, Q, A, T), the chassis carries 768 Mbps incoming/outgoing bandwidth with 24 alarm inputs and 8 alarm outputs, and the local interface is available in 38 languages including Spanish (Latin America), Portuguese (Brazil) and French.
Is this the right recorder for you?
Plain-language guide for buyers and installers — based only on what this recorder actually does.
Large campuses & enterprise sites128 or 256 channels in one recorder — a 3U chassis at 128-ch, a taller 4U chassis at 256-ch — covers a major site or aggregates several buildings without stacking multiple recorders.
Storage that can't afford to fail24 SATA interfaces with RAID 0/1/5/6/10/50/60 and N+1 hot spare protect footage — Hot Swap is supported, so a failed disk can be swapped without taking the recorder offline.
Long-term evidence at scale24 SATA interfaces up to 16 TB each (up to 384 TB total), plus two miniSAS ports to add an external 16-bay enclosure for another 256 TB when you outgrow the internal capacity.
Video walls & control roomsTwo independent HDMI outputs (4K each) plus VGA, and four rear expansion slots for optional 4-ch/7-ch HDMI decoding cards, drive multiple large-format displays from one unit.
Redundant power for critical sitesAn optional second power supply (PWR-DC12-550A-IN) keeps recording through a single PSU failure — order it alongside the recorder for sites that can't go dark.
Works with more than just Uniview camerasONVIF conformance across Profile S, G, C, Q, A and T lets mixed-brand camera deployments connect to this recorder, not just Uniview's own IPC line.
Not the right pick if you need…
- A compact desktop unit — this is a rack-mount chassis (3U at 128-R-IM-8G, a taller 4U at 256-R-IM-16G), not a desktop recorder
- Built-in PoE ports — cameras need a separate PoE switch
- A second power supply included as standard — the redundant PSU (PWR-DC12-550A-IN) is an optional add-on, not included
- A small deployment — this series starts at 128 channels; a lower-channel Uniview NVR fits smaller sites better
- Full NVR-side smart analytics on any third-party camera — Smart-by-NVR functions on non-Uniview ("normal") cameras are capped to 64-ch on the 128-R-IM-8G / 128-ch on the 256-R-IM-16G, not all channels
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Key Features
Complete list from the official datasheet.
Support Ultra 265/H.265/H.264 video formats
128/256-channel input
Third-party IP cameras supported with ONVIF conformance: Profile S, Profile G, Profile C, Profile Q, Profile A, Profile T
Support 2-ch HDMI, 1-ch VGA, HDMI at up to 4K (3840×2160) resolution
HDMI1, HDMI2 and VGA independent outputs provided
Up to 12 Megapixels resolution recording
Redundant power supply optional
Support HDD hot swap with RAID 0, 1, 5, 6, 10, 50, 60 storage scheme configurable
Support 2 miniSAS Interfaces
Support 12V power output
ANR technology to enhance the storage reliability when the network is disconnected
Support cloud upgrade
Support N+1 Hot spare
24 SATA interfaces, self-healing RAID. Smart search built in.
Two real capabilities that define this series: N+1 hot-spare RAID across 24 SATA interfaces, and VCA search working with smart cameras.
24-SATA RAID + N+1 HOT SPARE
Twenty-four SATA interfaces, and the array heals itself
Twenty-four hot-swap SATA interfaces, each up to 16 TB (up to 384 TB total), support Disk Group, Redundant Storage and RAID 0/1/5/6/10/50/60 — with N+1 Hot Spare, a standby disk in the array can take over automatically before you even swap the failed drive.
SMART SEARCH AT SCALE
Find one face or one vehicle across 256 channels
VCA Search indexes face snapshots, face comparisons, motor and non-motor vehicles, and human bodies — combined with a vehicle picture library holding up to 25,000 images across 5 libraries, so investigators jump straight to the match instead of scrubbing footage channel by channel.
Which size fits your project?
Bars show camera capacity per model. Click the model buttons above to switch — the spec table highlights every other difference.
NVR824-128-R-IM-8G64-ch NVR-side smart on normal cameras · 3U chassis · sync playback 16-ch
128cameras
NVR824-256-R-IM-16G128-ch NVR-side smart on normal cameras · 4U chassis · sync playback 16-ch
256cameras
Who uses it, where it goes and how to size it
Written for the NVR824-128-R-IM-8G and NVR824-256-R-IM-16G from the official datasheet: 128 or 256 IP channels, 768 Mbps incoming, 24 hot-swap SATA bays up to 16 TB each with RAID 0/1/5/6/10/50/60 and N+1 hot spare, two independent 4K HDMI outputs plus VGA, optional redundant power supply.
Who it is for
- Integrators of large sites and campuses — 128 or 256 cameras on one recorder with 768 Mbps of intake, so a factory, campus or multi-building site is managed as one box instead of a stack of small NVRs.
- Control rooms and monitoring centers — HDMI1, HDMI2 (each up to 4K) and VGA are independent outputs, optional FB-HD04-B-NB / FB-HD07-B-NB decoding cards add more HDMI screens, and up to 128 remote users can connect.
- Sites that cannot lose footage — Banks, transport, public buildings and plants: RAID 6 or 60 with an N+1 hot spare, hot-swap disks, Array Degraded / Array Damaged alarms and an optional second power supply (PWR-DC12-550A-IN).
- Upgrades with existing mixed-brand cameras — ONVIF Profile S/G/C/Q/A/T for third-party cameras, and NVR-side face detection, SIP intrusion or video metadata on 64 (128-R-IM-8G) or 128 (256-R-IM-16G) ordinary cameras that have no AI of their own.
Where and how to install
- 19-inch rack on rails — Both models are rack chassis about 533 mm deep (131.0 mm high for the 128-R-IM-8G, 175.5 mm for the 256-R-IM-16G) and weigh up to 12.5 kg before 24 disks go in. Use the SL-A slide rail rather than resting it on a shelf, and leave room in front to pull disks.
- Keep the room cool — The recorder works from -10 °C to 50 °C, but the datasheet notes that the largest disk size allowed depends on room temperature, and 24 spinning disks make real heat. Put it in an air-conditioned equipment room, keep front and rear airflow open and do not close it in an unventilated cabinet.
- Power: UPS and the second supply — Input is AC 100–240 V and the recorder draws up to 300 W without disks, so size the UPS for that plus 24 disks. If you fit the optional PWR-DC12-550A-IN, feed the two supplies from different circuits or UPS units so one breaker cannot stop recording.
- Network design for 768 Mbps — The recorder has 4 gigabit RJ45 ports, and 768 Mbps of camera traffic is most of one gigabit link. Bring cameras in through a core switch with gigabit or faster uplinks from each building, never a chain of small switches, and keep the camera network separate from the office network.
- Disks and RAID before cameras — Fit disks of the same size, build the array (RAID 6 or 60 is usual for 24 large disks) and assign a hot spare before adding cameras, because building an array formats the disks. Label each bay so the right disk is pulled when an alarm comes.
- Displays, alarms and expansion — VGA shows live video by default; to get the highest resolution on HDMI, clear the VGA preview as the datasheet says. Wire the 24 alarm inputs and 8 outputs to panels or sirens, and use the 2 miniSAS ports for a DEU1016-B 16-disk enclosure when the 24 internal bays are full.
Planning table: channels, bandwidth, disks and retention
Both models share the same 768 Mbps intake, 24 SATA bays, RAID levels, decoding power and outputs. The difference is channel count, NVR-side smart analysis on ordinary cameras (64 vs 128 channels) and chassis height. Because the intake is the same, the 256-channel model leaves on average 3 Mbps per camera when every channel is used, half of the 6 Mbps on the 128-channel model.
| NVR824-128-R-IM-8G | NVR824-256-R-IM-16G | |
|---|---|---|
| IP camera channels | 128 | 256 |
| Incoming / outgoing bandwidth | 768 / 768 Mbps | 768 / 768 Mbps |
| Average per camera, all channels used | 6 Mbps | 3 Mbps |
| Hard disks (hot swap) | 24 × SATA, ≤ 16 TB each (384 TB) | 24 × SATA, ≤ 16 TB each (384 TB) |
| RAID levels | 0, 1, 5, 6, 10, 50, 60 + N+1 hot spare | 0, 1, 5, 6, 10, 50, 60 + N+1 hot spare |
| Usable on 24 × 16 TB: RAID 5 / RAID 6 / RAID 6 + 1 hot spare | 368 / 352 / 336 TB | 368 / 352 / 336 TB |
| Days in RAID 6 + 1 hot spare (336 TB), all channels at 4 Mbps | 60.8 | — (256 × 4 = 1024 Mbps > 768) |
| Days in RAID 6 + 1 hot spare (336 TB), all channels at 2 Mbps | 121.5 | 60.8 |
| Smart by NVR on ordinary cameras (face, SIP, video metadata) | 64-ch | 128-ch |
| Smart by IPC (Uniview smart cameras) | All channels, ≤ 64 images/s total | All channels, ≤ 64 images/s total |
| Decoding for local display (any one of) | 3 × 12MP@30 / 5 × 4K@30 / 20 × 1080P@30 | 3 × 12MP@30 / 5 × 4K@30 / 20 × 1080P@30 |
| Video outputs (largest split) | 2 × HDMI 4K (64) + VGA (36), independent | 2 × HDMI 4K (64) + VGA (36), independent |
| Network ports | 4 × RJ45 1000 Mbps | 4 × RJ45 1000 Mbps |
| Chassis height / power | 131.0 mm / AC 100–240 V, ≤ 300 W (no HDD) | 175.5 mm / AC 100–240 V, ≤ 300 W (no HDD) |
- Pick the 128-R-IM-8G for up to 128 cameras of 4–8 MP: the full 768 Mbps intake leaves 6 Mbps per camera, and about 60.8 days in RAID 6 with a hot spare at 4 Mbps each.
- Pick the 256-R-IM-16G for 129–256 cameras of about 2 MP (3 Mbps or less each), or when more than 64 ordinary cameras need NVR-side face or SIP analysis.
- If you need 256 cameras at 4 Mbps or more each, that is over 768 Mbps: split them over two recorders.
Retention assumes continuous 24-hour recording: days = TB × 10^12 ÷ (cameras × Mbps × 10^6 ÷ 8 × 86400). 4 Mbps is a typical H.265 main stream for 4 MP and 2 Mbps for 2 MP; Ultra 265, lower frame rates or event recording give more days. Usable space: RAID 5 = 23 data disks, RAID 6 = 22, RAID 6 + 1 hot spare = 21 (× 16 TB). The datasheet notes the largest usable disk size depends on room temperature.
Full Specifications
Complete official specifications from the manufacturer's datasheet (technical values in English).
Highlighted rows differ between the two models:NVR824-128-R-IM-8G · 128-chNVR824-256-R-IM-16G · 256-ch
Decoding
| Decoding Format | Ultra 265, H.265, H.264 |
| Decoding Capability | 3 x 12MP@30, 5 x 4K@30, 20 x 1080P@30, 24 x 1080P@25, 40 x 960P@25, 45 x 720P@30, 54 x 720P@25, 96 x D1 |
| Decoding Capability Description | The resolution of each channel cannot exceed 4096 pixels in length or width. For VGA/HDMI independent output, the VGA live video is output by default. To output the highest resolution video from the HDMI port, please clear the VGA video on the preview page. |
| Audio Compression | G.711A, G.711U |
Network
| Incoming Bandwidth | 768 Mbps |
| Outgoing Bandwidth | 768 Mbps |
| Remote Users | 128 |
| Protocols | TCP/IP, P2P, UPnP, NTP, DHCP, PPPoE, HTTP, HTTPS, DNS, DDNS, SNMP, SMTP, NFS, RTSP, 802.1x, IPv6, IPv4 |
| Browser (Plugin) | IE10, IE11, Chrome 45+, Edge 79+, Firefox 52+ |
Video/Audio Input
| IP Video Input | 128-R-IM-8G · 128-ch256-R-IM-16G · 256-ch |
| RCA Audio Input | 1-ch |
Video/Audio Output
| HDMI Output | 4K (3840 × 2160)/30 Hz, 1920 × 1080/60 Hz, 1920 × 1080/50 Hz, 1600 × 1200/60 Hz, 1280 × 1024/60 Hz, 1280 × 720/60 Hz, 1024 × 768/60 Hz |
| VGA Output | 1920 × 1080/60 Hz, 1920 × 1080/50 Hz, 1600 × 1200/60 Hz, 1280 × 1024/60 Hz, 1280 × 720/60 Hz, 1024 × 768/60 Hz |
| RCA Audio Output | 1-ch |
| Liveview Display | VGA: 1/4/6/8/9/16/25/36, HDMI1/HDMI2: 1/4/6/8/9/16/25/36/64 |
| Corridor Mode Screen | 3/4/5/7/9/10/12/16/32 |
Two-way Audio
| Two-way Audio | 1-ch, RCA (using the audio input and output) |
Snapshot
| FTP/Schedule/Event Snapshot | Full-ch snapshot (max. 4000 × 3000 video resolution, with snapshot resolution same as the video resolution) |
Recording
| Recording Resolution | 12 MP/8 MP/6 MP/5 MP/4 MP/3 MP/1080P/960P/720P/D1/2CIF/CIF |
| Synchronous Playback in Local | 16-ch |
Smart
| VCA Detection by IPC | Face Detection, Face Comparison, Vehicle Detection, SIP (Intrusion Detection, Cross Line Detection, Enter Area, Leave Area), Ultra Motion Detection (UMD), Temperature Detection (Fire Detection, Smoking Detection, Temperature Measurement, Smoke and Fire Detection), People Counting (People Flow Counting, Crowd Density Monitoring), Video Metadata, Traffic Monitoring |
| Smart by NVR | Face Detection, Face Comparison, Smart Intrusion Prevention (SIP), Video Metadata (at the same channel, only one smart function by NVR can be enabled simultaneously) |
| VCA Search | Face Snapshot Search, Face Comparison Search, Motor Vehicle Search, Non-Motor Vehicle Search, Human Body Search, General Search, People Counting Report |
| Smart by IPC | All channels (up to 64 images/s in total): Face Detection, Face Comparison, Vehicle Detection, Temperature Detection, SIP, UMD, Video Metadata, Traffic Monitoring |
| by NVR | 128-R-IM-8G · 64-ch256-R-IM-16G · 128-ch |
| Search by Image | Support |
| Vehicle Picture Library | Up to 5 vehicle picture libraries, with up to 25,000 vehicle pictures in total |
| SIP by NVR with normal cameras | 128-R-IM-8G · 64-ch256-R-IM-16G · 128-ch |
| Video Metadata by NVR with normal cameras | 128-R-IM-8G · 64-ch256-R-IM-16G · 128-ch |
| Video Metadata by NVR | Motor Vehicle: Vehicle Color, Vehicle Type, Vehicle Brand, Direction. Non-Motor Vehicle: Non-Motor Vehicle Type, Direction, Gender, Age, Upper Garment Length. Human Body: Gender, Age, Mask, Hairstyle, Bag Style, Direction, Upper Garment Length, Lower Garment Length. |
Alarm
| General Alarm | Defocus Detection, Scene Change Detection, Object Left Behind, Object Removed, Auto Tracking, Motion Detection, Tampering, Human Body Detection, Video Loss, Alarm Input, Audio Detection |
| Alert Alarm | IP Conflict, Network Disconnected, Disk Offline, Disk Abnormal, Illegal Access, Hard Disk Space Low, Hard Disk Full, Recording/Snapshot Abnormal, High CPU Temperature, High Motherboard Temperature, Array Damaged, Array Degraded |
GUI Language
| GUI Language | 38 languages: Simplified Chinese, Traditional Chinese, English, Vietnamese, Thai, Turkish, Spanish (Latin America), Portuguese (Brazil), Spanish, Portuguese, French, German, Italian, Dutch, Polish, Czech, Hungarian, Slovak, Russian, Hebrew, Arabic, Ukrainian, Estonian, Bulgarian, Greek, Romanian, Danish, Swedish, Norwegian, Finnish, Croatian, Slovenia, Serbia, Korean, Japanese, Latvian, Lithuanian, Persian |
Hard Disk
| SATA | 24 SATA interfaces |
| Capacity | Up to 16 TB for each HDD (the maximum HDD capacity varies with environment temperature) |
| Disk Group | Support |
| Redundant Storage | Support |
| Disk Array Type | RAID 0, 1, 5, 6, 10, 50, 60 |
| Hot Swap | Support |
External Interface
| Network Interface | 4 RJ45 10 M/100 M/1000 M self-adaptive Ethernet Interface |
| USB | Front panel: 2 × USB2.0, Rear panel: 2 × USB3.0 |
| RS485 | 1 |
| RS232 | 1 |
| Alarm In | 24-ch |
| Alarm Out | 8-ch |
| eSATA | 1 |
| miniSAS | 2 |
| Power Output | 12 V |
| Power Supply | AC 100 to 240 V |
| Power Switch | Support |
| Redundant Power Supply | Support |
Working Environment
| Working Temperature | -10 °C to 50 °C (14 °F to 122 °F) |
| Working Humidity | ≤ 90% RH (non-condensing) |
| Power Consumption (without HDD) | ≤ 300 W |
Dimensions
| Weight (without HDD) | ≤ 12.5 kg (27.56 lb) |
| Height | 128-R-IM-8G · 3U256-R-IM-16G · 4U |
| Dimensions | 128-R-IM-8G · 533 × 482 × 131.0 mm (21.0"×19.0"×5.1")256-R-IM-16G · 484.6 × 533 × 175.5 mm (19.1"×21.0"×6.9") |
Certification
| Certification | CE; FCC; UL; RoHS; WEEE |
| CE | EN 55032, EN 61000-3-3, EN IEC 61000-3-2, EN 55035 |
| FCC | Part15 Subpart B |
Dimensions
Engineering drawing reproduced 1:1 from the official datasheet — this drawing depicts the NVR824-256-R-IM-16G (4U chassis); the datasheet provides no separate drawing for the 128-R-IM-8G (3U), whose dimensions are listed as text below.
unit: mm (in.) — drawing shown: 256-R-IM-16G (4U)
| Weight (without HDD) | ≤ 12.5 kg (27.56 lb) |
| Height | 3U — 128-R-IM-8G · 4U — 256-R-IM-16G |
| Dimensions | 533 × 482 × 131.0 mm (21.0"×19.0"×5.1") — 128-R-IM-8G 484.6 × 533 × 175.5 mm (19.1"×21.0"×6.9") — 256-R-IM-16G |
| Power supply | AC 100 to 240 V |
| Consumption (without HDD) | ≤ 300 W |
Rear panel — all interfaces
Optional Accessories
Order together with the recorder to save shipping.
FB-HD04-B-NB4-ch HDMI output decoding card
FB-HD07-B-NB7-ch HDMI output decoding card
DEU1016-B16-HDD 3U disk enclosure
SL-ASlide rail
PWR-DC12-550A-IN550W redundant power supply module
128/256-Channel AI NVR FAQ — NVR824-R-IM Series
Can it run AI without replacing our existing cameras?
Yes — the recorder itself runs Face Detection, Face Comparison, Smart Intrusion Prevention and Video Metadata with normal UNV or third-party cameras: up to 64 channels on the NVR824-128-R-IM-8G and 128 channels on the NVR824-256-R-IM-16G. Video Metadata reads vehicle colour, type, brand and direction.
What storage does a 256-camera project get?
Twenty-four SATA interfaces, each accepting up to 16 TB — 384 TB in the chassis — with hot swap, RAID 0, 1, 5, 6, 10, 50, 60 and an N+1 hot spare. Disk Group and Redundant Storage keep recording through a drive failure and live replacement.
Is 768 Mbps intake enough for 256 channels?
At full 256-channel load it averages 3 Mbps per camera — workable for 1080p Ultra 265 mainstreams; the 128-channel model averages 6 Mbps, covering 4MP streams. Outgoing bandwidth is also 768 Mbps, so remote operators and playback do not starve live recording.
How do remote branches connect to it?
Four 10/100/1000M RJ45 interfaces are on board, and up to 128 remote users connect over P2P, HTTP/HTTPS or DDNS — no fixed IP required — with SNMP available for network monitoring. Browser access covers IE10/11, Chrome 45+, Edge 79+ and Firefox 52+, with 16-channel synchronous local playback for the control room.
What search tools come with it?
Search by image, Face Snapshot Search, Face Comparison Search, motor and non-motor vehicle search and human body search are built in. Up to 5 vehicle picture libraries store 25,000 vehicle pictures, and camera-side smart data arrives on all channels at up to 64 images per second. Recording resolution reaches 12 MP.
Which RAID level should I use on the NVR824 with 24 disks, and what does the N+1 hot spare do?
For 24 large disks RAID 6 or RAID 60 is the usual choice: an array survives two failed disks, where RAID 5 survives only one, and rebuilding a 16 TB disk takes many hours during which a second failure would lose a RAID 5 array. With 24 × 16 TB, RAID 6 gives 352 TB usable, or 336 TB if one disk is kept as a hot spare. The hot spare stays idle until a disk fails, then the recorder starts rebuilding onto it by itself; the Array Degraded alarm tells you to swap the failed disk, which you can do with the recorder running (hot swap).
Does the NVR824 come with a redundant power supply?
No. Redundant power is supported but optional: order the PWR-DC12-550A-IN (550 W) module together with the recorder. With both supplies fitted, recording continues if one fails, but only if the two are fed from different circuits or UPS units. The recorder draws up to 300 W without disks, so the UPS must also cover 24 disks.
Can the NVR824 drive a video wall in our control room?
For a small wall, yes: HDMI1 and HDMI2 (each up to 4K at 30 Hz) and VGA are independent, HDMI splits up to 64 views and VGA up to 36. For more screens add the optional FB-HD04-B-NB (4-ch HDMI) or FB-HD07-B-NB (7-ch HDMI) decoding cards. The built-in decoding totals 3 × 12MP, 5 × 4K or 20 × 1080P at 30 fps, so large split screens should use the cameras' sub-streams.
Will our Hikvision, Dahua or other third-party cameras work on the NVR824, including AI?
Video yes: the NVR824 supports ONVIF Profile S, G, C, Q, A and T plus RTSP, which covers live view and recording from most third-party cameras. For AI, the recorder itself can run face detection, face comparison, SIP intrusion or video metadata on ordinary cameras, up to 64 channels on the 128-R-IM-8G and 128 on the 256-R-IM-16G, one function per channel. Events listed as Smart by IPC (vehicle, temperature, people counting, traffic) come from Uniview smart cameras. Send us your camera models and we will confirm before you order.
Which hard disks should go in the NVR824, and can storage be expanded later?
Use surveillance- or enterprise-grade SATA disks made for 24/7 multi-bay use, up to 16 TB each, and keep one size within an array. The datasheet notes that the largest disk size allowed depends on room temperature, so keep the room cool when using 16 TB disks. When the 24 bays are full, the 2 miniSAS ports connect a DEU1016-B 16-disk enclosure (16 × 16 TB = 256 TB more); there is also 1 eSATA port.
What is the real difference between the NVR824-128-R-IM-8G and the NVR824-256-R-IM-16G?
In the datasheet only three things differ: 128 vs 256 channels, NVR-side smart analysis on ordinary cameras for 64 vs 128 channels, and the chassis (131.0 mm vs 175.5 mm high). Intake (768 Mbps), 24 bays, RAID, decoding and outputs are the same, so the 256-channel model averages 3 Mbps per camera when full. The -8G / -16G part of the name is described on this page as AI memory; the datasheet does not define it.
Ordering questions — samples, shipping, payment, lead time and genuine stock — are answered once on our FAQ page.
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