NVR / Recorders › NVR516-64 / 128
Uniview (UNV)NVR516 Series · 16× SATA HDD
16-Bay RAID Network Video Recorder · NVR516 Series
NVR516-64 / 128
64 / 128-channel network video recorder — 16 hot-swap SATA bays with RAID 0/1/5/6/10/50/60, independent dual-HDMI plus VGA output, records cameras up to 12MP, with optional redundant power supply.
12MP · max recordingUltra 265 · low storage2× HDMI · + VGA independent16× SATA · up to 16 TB eachRAID 0/1/5/6/10/50/60 · hot-swap38 languages · local interface
Choose your size — two models on this page
Rule of thumb: count your cameras across the whole deployment, then leave room to grow — 64 channels covers most single large facilities; step up to the 128-ch if you're combining several buildings or a city-scale project. Highlighted rows in the spec table below show every difference between the two.
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How many terabytes for your channels and days? Use the storage calculator →
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The Uniview NVR516 Series is a 16-bay rack-mount network video recorder offered in two channel counts: NVR516-64 (64-ch) and NVR516-128 (128-ch). Both record cameras up to 12MP with Ultra 265 / H.265 / H.264 compression, output independently over two HDMI ports plus VGA, and support hot-swap RAID 0/1/5/6/10/50/60 across 16 SATA bays holding up to 16 TB each. The recorder also runs extensive on-camera VCA analytics — face detection and comparison, vehicle detection, intrusion and line-crossing detection, temperature/fire detection and people counting — with a 38-language local interface.
Is this the right recorder for you?
Plain-language guide for buyers and installers — based only on what this recorder actually does.
Large campuses & city-scale projects64 or 128 channels in one 3U box covers a large campus, industrial park or city-surveillance hub without stacking multiple recorders.
Storage that can't afford to fail16 hot-swap SATA bays with RAID 0/1/5/6/10/50/60 protect the footage — swap a failed disk while the recorder keeps running.
Long-term evidence retention at scale16 SATA bays, up to 16 TB each (up to 256 TB total), keep months of high-resolution footage online across a large camera count.
High camera counts on one network link384/512 Mbps incoming bandwidth over four Gigabit ports plus two SFP uplinks handles 64 or 128 higher-resolution streams without choking the network.
Independent multi-screen monitoringHDMI1, HDMI2 and VGA independent outputs let a control room show three different views at once — not just a mirrored screen.
Power resilienceRedundant power supply is available as an option, and Support N+1 Hot spare keeps recording after a single disk fails without waiting for a technician.
Deep VCA analytics & fast searchFace detection/comparison, vehicle detection, intrusion detection, temperature/fire detection and people counting run on the cameras; the recorder's VCA Search narrows a 64- or 128-channel deployment down to the exact clip.
Not the right pick if you need…
- PoE ports — cameras need a separate PoE switch (this recorder has no built-in PoE ports)
- A second power supply included out of the box — the Power Supply 2 slot is present but the AC power module is an optional accessory (PWR-300A-IN), sold separately
- Compact or desktop placement — this is a 3U rack chassis (482 × 477 × 131 mm, ≤10 kg without HDDs) that needs a server rack, not a desk or shelf
- A small or single-site deployment — 16-bay, 64/128-channel scale is built for large multi-building or city-level projects, not a shop with a handful of cameras
- Built-in decoding cards out of the box — Decoding Card 1/2 slots exist on the rear panel but the cards themselves are optional add-ins, not included
Worried about counterfeits? Order under your own company name.
1 · Company name2 · Corporate bank payment3 · Order registered in your name4 · Verify SN on Uniview's site
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Key Features
Complete list from the official datasheet.
Support Ultra 265/H.265/H.264 video formats
64/128-channel input
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
16-bay RAID storage. Deep VCA analytics.
Two real capabilities that define this series: hot-swap RAID across 16 bays, and extensive camera-side VCA analytics with recorder-side search.
RAID 0/1/5/6/10/50/60
16 bays, hot-swap, and a disk can fail safely
16 independent SATA bays each take a disk up to 16 TB (up to 256 TB total) and support hot swap plus RAID 0/1/5/6/10/50/60 — mirroring or parity protection, and Support N+1 Hot spare keeps recording after a single drive failure without waiting for a technician.
SMART VCA
Face, vehicle and intrusion detection, built in
Face Detection, Face Comparison, Vehicle Detection, intrusion/line-crossing detection (SIP), Ultra Motion Detection, temperature and fire detection, and people counting run on up to 32 images/s across all channels, feeding VCA Search — Face Snapshot, Face Comparison, Motor/Non-Motor Vehicle, Human Body and General Search — so operators jump straight to the clip instead of scrubbing 64 or 128 channels of footage.
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.
NVR516-6464-ch input · 384 Mbps incoming · sync playback 16-ch
64cameras
NVR516-128128-ch input · 512 Mbps incoming · sync playback 16-ch
128cameras
Who uses it, where it goes and how to size it
Written for the Uniview NVR516-64 and NVR516-128 from the official datasheet: 64 or 128 channels, 384 or 512 Mbps incoming, 16 hot-swap SATA bays up to 16 TB each with RAID 0/1/5/6/10/50/60, 4 × Gigabit RJ45 plus 2 × SFP, optional second power supply.
Which variant suits which project
- NVR516-64: one large site with many 4K cameras — Factories, hospitals, hotels and campuses with up to 64 cameras. Its 384 Mbps input leaves an average of 6 Mbps per channel when all 64 are used, so a mix with many 4K/8 MP cameras fits: about 48 cameras at 8 Mbps.
- NVR516-128: several buildings or a city project on one box — Industrial parks, schools with several blocks and street surveillance with up to 128 cameras. With 512 Mbps for 128 channels the average is 4 Mbps per camera, which suits 2–4 MP cameras on H.265/Ultra 265; it records at most about 64 cameras at 8 Mbps.
- Projects where footage must survive a disk failure — Banks, government sites and logistics centres: 16 hot-swap bays with RAID 5/6/50/60 keep recording when a disk fails, Array Degraded and Array Damaged alarms warn the operator, and N+1 hot spare lets a standby recorder cover a failed one in multi-recorder systems.
- Guard rooms and small control rooms — HDMI1, HDMI2 and VGA show three different layouts at once (up to 64 views on each HDMI), and 24 alarm inputs, 8 alarm outputs and a 12 V output tie door contacts, beams and sirens into the recorder without a separate alarm panel.
Where and how to install the recorder
- A 19-inch rack, on rails — The chassis is 3U, 482 × 477 × 131 mm and up to 10 kg before the 16 disks go in. Mount it on the SL-A slide rails in a cabinet deep enough for the 477 mm body plus rear cables, so you can pull it out to service it; do not hang it on the front ears alone.
- Cool, dust-free room — The recorder runs from -10 °C to 55 °C, but the datasheet says the largest disk it accepts depends on room temperature, and 16 spinning disks make a lot of heat. Use an air-conditioned equipment room, keep front and rear vents clear, and set up the High CPU Temperature and Disk Abnormal alerts.
- Two power supplies and a UPS — Input is AC 100–240 V with a power switch. The second power supply is the optional PWR-300A-IN (300 W) module; with it, feed each supply from a different circuit or UPS. The ≤ 50 W consumption figure excludes disks, so size the UPS for the recorder with all 16 disks plus the PoE switches.
- Camera network and uplinks — There are no PoE ports: cameras connect to PoE switches (copper runs up to 100 m), and the switches connect to the 4 Gigabit RJ45 or 2 SFP ports. The 384/512 Mbps input fits within one Gigabit (1000 Mbps) link, but use fibre SFP links for buildings far from the rack and keep operator/Internet traffic on a separate port or VLAN.
- Disks: 16 identical surveillance drives — Fit 3.5-inch SATA surveillance-grade disks of one model and size, up to 16 TB each, and build the RAID array before cameras start recording. A RAID array is only as large as its smallest member, and mixing sizes wastes space. For more storage later there are 2 miniSAS ports for the DEU1016-B 16-disk enclosure, 1 eSATA port and NFS network storage.
Planning table: channels, bandwidth, disks, RAID and retention
The two models share the same chassis, 16 disk bays, RAID levels, decoder, outputs and ports. Only the channel count and incoming bandwidth differ: the NVR516-64 has more bandwidth per camera (6 Mbps average), the NVR516-128 has more channels at 4 Mbps average. Storage is the same, so with twice the cameras the 128-ch keeps footage for half as many days.
| NVR516-64 | NVR516-128 | |
|---|---|---|
| IP camera channels | 64 | 128 |
| Incoming bandwidth | 384 Mbps | 512 Mbps |
| Average bitrate per camera with every channel in use | 6 Mbps | 4 Mbps |
| Cameras at 8 Mbps (typical 4K H.265) within the bandwidth | 48 | 64 |
| HDD bays × max capacity per disk | 16 × SATA, ≤ 16 TB | 16 × SATA, ≤ 16 TB |
| Maximum raw storage | 256 TB | 256 TB |
| RAID levels | 0/1/5/6/10/50/60, hot swap | 0/1/5/6/10/50/60, hot swap |
| Usable with all bays in one RAID 5 / RAID 6 array | 240 TB / 224 TB | 240 TB / 224 TB |
| Decoding (live view / playback) | 4×12MP@20, 4×4K@30, 16×1080P@30 | 4×12MP@20, 4×4K@30, 16×1080P@30 |
| Video outputs | 2 × HDMI (4K) + VGA, independent | 2 × HDMI (4K) + VGA, independent |
| Network ports | 4 × RJ45 1000M + 2 × SFP | 4 × RJ45 1000M + 2 × SFP |
| Power supply | AC 100–240 V; 2nd PSU optional (PWR-300A-IN) | AC 100–240 V; 2nd PSU optional (PWR-300A-IN) |
| Days on RAID 6 (224 TB), every channel at 4 Mbps | 81.0 (64 cameras) | 40.5 (128 cameras) |
| Days on RAID 6 (224 TB), cameras at 8 Mbps up to the bandwidth limit | 54.0 (48 cameras) | 40.5 (64 cameras) |
- Pick the NVR516-64 for up to 64 cameras, especially if many are 4K/8 MP or 12 MP: about 48 cameras at 8 Mbps fit in 384 Mbps.
- Pick the NVR516-128 for 65–128 cameras of 2–4 MP at about 4 Mbps each, or when you want spare channels for later expansion.
- With 16 TB disks use RAID 6 (two disks may fail) rather than RAID 5: 224 TB usable instead of 240 TB, but a second failure during a long rebuild does not lose the array.
Assumptions: continuous 24-hour recording, 4 Mbps per 4 MP camera and 8 Mbps per 4K camera (typical H.265 main streams), decimal terabytes. Days = usable TB × 10^12 ÷ (cameras × bitrate ÷ 8 × 86,400). RAID 5 usable = 15 × 16 TB, RAID 6 usable = 14 × 16 TB; formatted capacity is slightly lower, and the datasheet says the largest usable disk depends on room temperature. Motion/event recording or Ultra 265 gives more days.
Full Specifications
Complete official specifications from the manufacturer's datasheet (technical values in English).
Highlighted rows differ between the two models:NVR516-64 · 64-chNVR516-128 · 128-ch
Decoding
| Decoding Format | Ultra 265, H.265, H.264 |
| Decoding Capability | 4 x 12MP@20, 4 x 4K@30, 16 x 1080P@30, 36 x 720P@30, 64 x D1 |
| Decoding Capability Description | The resolution of each channel cannot exceed 4096 pixels in length or width |
| Audio Compression | G.711A, G.711U |
Network
| Incoming Bandwidth | 64 · 384 Mbps128 · 512 Mbps |
| Outgoing Bandwidth | 384 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 | 64 · 64-ch128 · 128-ch |
| BNC 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 (HDMI audio output is not supported) |
| 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 |
| BNC 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, BNC (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 |
| 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 32 images/s in total) Face Detection, Face Comparison, Vehicle Detection, Temperature Detection, SIP, UMD, Video Metadata, Traffic Monitoring |
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 | 16 SATA Interfaces |
| Capacity | Up to 16 TB for each HDD (the maximum HDD capacity varies with environment temperature) |
| 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, 2 1000 M SFP Ethernet Interface |
| USB | Rear panel: 4 × 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 55 °C (14 °F to 131 °F) |
| Working Humidity | ≤ 90% RH (non-condensing) |
| Power Consumption (without HDD) | ≤ 50 W |
Dimensions
| Weight (without HDD) | ≤ 10 Kg (22.05 lb) |
| Dimensions | 482 mm × 477 mm × 131 mm (19.0" × 18.8" × 5.2") |
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.
unit: mm (in.)
| Dimensions | 482 mm × 477 mm × 131 mm (19.0" × 18.8" × 5.2") |
| Weight (without HDD) | ≤ 10 kg (22.05 lb) |
| Power supply | AC 100 to 240 V |
| Consumption (without HDD) | ≤ 50 W |
Rear panel — all interfaces
Optional Mounting Accessories
Order together with the camera to save shipping.
DEU1016-B16 HDDs 3U disk enclosure
SL-ASlide rail
PWR-300A-INUNV 300W AC power module (optional redundant PSU)
64/128-Channel 16-Bay NVR FAQ — NVR516 Series
How many hard disks does the NVR516 take?
Sixteen SATA bays, each up to 16 TB — 256 TB in one chassis. RAID 0, 1, 5, 6, 10, 50 and 60 are supported, and bays are hot-swappable, so a failed disk is replaced without shutting recording down. One eSATA and two miniSAS ports handle external storage.
Can it really handle 128 cameras at once?
The 128-channel model accepts 512 Mbps of incoming video — an average of 4 Mbps per camera at full load, typical for 1080p–4MP Ultra 265 mainstreams. The 64-channel version takes 384 Mbps, about 6 Mbps per camera. Outgoing bandwidth is 384 Mbps and up to 128 remote users can connect.
What network uplinks does it have for a large site?
Four 10/100/1000M RJ45 ports plus two 1000M SFP slots. The SFP slots take fiber modules, which suits campuses and industrial estates where camera traffic aggregates over long fiber runs. RS485, RS232, 24 alarm inputs and 8 alarm outputs are also on board for integration work.
Will it survive hot equipment rooms and unstable power?
The power supply accepts AC 100 to 240 V, and a redundant power supply is supported for critical sites. Working temperature is -10 °C to 55 °C at up to 90% non-condensing humidity, and the unit draws no more than 50 W without hard disks.
Does it support face and vehicle search?
Analytics run on the cameras — the NVR receives Face Detection, Face Comparison, Vehicle Detection and SIP events from IPCs on all channels, up to 32 images per second in total. On the recorder you get Face Snapshot Search, Face Comparison Search, motor and non-motor vehicle search, human body search and general search.
Can the NVR516-64 / NVR516-128 record Hikvision, Dahua or other third-party cameras?
Usually yes, but check your models first. Uniview publishes a guide for adding third-party cameras to its recorders, normally over ONVIF, yet ONVIF is not in this model's datasheet protocol list (RTSP is), so send us the camera models and we will confirm before you order. Expect recording, live view and basic motion events from other brands; the face, vehicle and people-counting search features rely on Uniview smart cameras.
How many 4K (8 MP) or 12 MP cameras can the NVR516-64 and NVR516-128 record?
Bandwidth sets the limit, not channels. At a typical 8 Mbps per 4K camera the NVR516-64 takes about 48 (384 ÷ 8) and the NVR516-128 about 64 (512 ÷ 8); lowering each camera to 6 Mbps with Ultra 265 lets the 64-ch model fill all 64 channels. Recording goes up to 12 MP, but the local decoder shows only 4 streams at 12 MP or 4K at full resolution, so large split screens use the cameras' sub-streams.
What happens on the NVR516 when a hard disk fails in RAID, and should I use RAID 5 or RAID 6?
Recording continues: the array goes to degraded state, the recorder raises an Array Degraded alert, and you hot-swap the failed disk while it runs, after which the array rebuilds. RAID 5 survives one failed disk, RAID 6 two; with 16 TB disks a rebuild takes a long time (the datasheet gives no figure), so RAID 6 is safer. Use RAID 50 or 60 if you split the 16 bays into two groups.
Does 'N+1 hot spare' on the NVR516 mean a spare hard disk?
No. On network video recorders N+1 hot spare is recorder-level redundancy: one standby NVR watches several working NVRs and takes over recording for one that goes offline, then returns the footage when it is back. Disk failures inside one recorder are covered by RAID 1/5/6/10/50/60. N+1 needs at least two recorders; tell us your layout and we will confirm the setup.
Can the NVR516 drive three monitors or a video wall in a control room?
Three monitors, yes: HDMI1, HDMI2 (both up to 4K/30 Hz) and VGA (up to 1080p) are independent, with up to 64 views on each HDMI and 36 on VGA, plus a corridor mode for 9:16 cameras. The decoder handles 4 × 4K@30 or 16 × 1080P@30, so busy walls run on sub-streams. HDMI carries no audio, and for a larger multi-screen wall a separate decoder is the usual choice.
Can I add storage to the NVR516 beyond its 16 internal disks?
Yes. The rear has 2 miniSAS ports for Uniview's DEU1016-B 3U enclosure with 16 more disks, 1 eSATA port, and NFS is in the protocol list for network storage. Internally the limit is 16 × 16 TB = 256 TB raw. Plan the expansion at the start (rack space, power, RAID layout) and confirm with us how many enclosures your configuration supports.
Ordering questions — samples, shipping, payment, lead time and genuine stock — are answered once on our FAQ page.
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