UniviewNVR524-E Series · 24× SATA Hot-Swap HDD

24-Bay Hot-Swap Network Video Recorder · NVR524-E Series

NVR524-128 / 256E

Name: Uniview NVR524-128 / 256E
Brand: Uniview

128 / 256-channel network video recorder — 24 hot-swap SATA bays with RAID 0/1/5/6/10/50/60 and N+1 hot spare, Ultra 265 compression, independent dual HDMI/VGA output (HDMI1 up to 8K), records cameras up to 32MP, with 640 Mbps incoming bandwidth and 16 alarm-in / 10 alarm-out terminals.

32MP · max recordingUltra 265 · low storageHDMI1 · 8K · + HDMI2/VGA independent24× SATA · up to 24 TB eachRAID 0/1/5/6/10/50/60 · + N+1 hot spare38 languages · local interface

CHOOSE YOUR SIZE — TWO MODELS ON THIS PAGE

Rule of thumb: count your cameras across the whole site, then leave room to grow — 128 channels covers most single large sites; step up to the 256E if you're combining several sites on one head-end or expect to add cameras later. Highlighted row in the spec table below shows the one real difference between the two.

Get Best Price on WhatsApp Need the PDF datasheet? Get it on WhatsApp →

In-stock models: 3 days to your designated warehouse after payment · Out-of-stock or insufficient stock: 7–15 working days

Sample quantities are welcome — testing one or two units first is the normal way to start.

Certified:CEFCCRoHSWEEENDAA

Corporate orders are registered with the manufacturer under your company name — genuine supply you can verify at the source.

128/256Channel options

640 MbpsIncoming bandwidth

24×24 TBSATA bays, max capacity each

8KHDMI1 output

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 projects128 or 256 channels in one 4U box covers a large campus, port facility, or city-level VMS deployment without stacking dozens of smaller recorders.

Storage that survives more than one failure24 hot-swap bays support RAID 0/1/5/6/10/50/60 plus N+1 Hot Spare — a standby disk in the array can take over automatically, often before you've even walked over to swap the failed drive.

Long-term high-resolution retention24 bays × up to 24 TB (up to 576 TB total) keep months of 32MP footage online instead of overwriting after a few weeks.

Two independent display wallsHDMI1 (up to 8K) / VGA1 and HDMI2 (up to 4K) / VGA2 output independently, so one recorder can drive a control-room video wall and a separate backup or office monitor at the same time.

High camera counts on one network link640 Mbps incoming bandwidth over dual Gigabit ports handles 128 or 256 higher-resolution streams without choking the network.

Wired alarm integration at scale16 alarm inputs and 10 alarm outputs on the rear panel wire directly to sirens, gate sensors or access-control triggers across a large site — no extra alarm hub needed.

Search across hundreds of channels fastPaired with Uniview smart cameras, the built-in VCA Search (face snapshot, face comparison, motor/non-motor vehicle, human body, heat map, people counting) jumps straight to the clip instead of scrubbing hours of footage across up to 256 channels.

Not the right pick if you need…

PoE ports — cameras need a separate PoE switch (this recorder has no built-in PoE ports)
Recorder-side AI on ordinary or third-party cameras — this series has no "Smart by NVR" processing; face/vehicle detection runs on Uniview smart IPC cameras upstream, the recorder only indexes and searches the results
Desktop or shelf placement — this is a 4U rack chassis (485 × 539 × 175 mm, ≤10 kg without HDDs) meant for a server rack or cabinet, not a desk
Redundant/dual power input — the datasheet lists a single AC 100–240 V supply, with no second PSU described
A small site with a handful of cameras — 128/256 channels across 24 bays is sized for large enterprise or city-level deployments, not a single small shop

Worried about counterfeits? Order under your own company name.

For corporate buyers: we support submitting the purchase order to Uniview under your company's real name — your company appears on the official order, so the origin of the goods can be verified directly with the manufacturer. Just provide your company name and pay by corporate bank transfer. Models carrying the anti-counterfeit label can also be self-verified on Uniview's official Anti-Counterfeiting Query page — enter the unit's SN plus the scratch-off code.

1 · Company name2 · Corporate bank payment3 · Order registered in your name4 · Verify SN on Uniview's site

Using your own freight forwarder? No problem.

For small and mid-size orders, we deliver directly to your designated forwarder's warehouse in China (EXW / FOB Guangzhou). From hand-over onward, international shipping and destination-side arrangements are handled by your forwarder — the way you already work.

EXW / FOB GuangzhouDelivery to your forwarder's warehouseNo minimum order

Note: manufacturer order registration (left) is available via the corporate purchase channel.

How to get a better price

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24 bays, self-healing RAID. Smart search built in.

Two real capabilities that define this series: N+1 hot-spare RAID across 24 hot-swap bays, and VCA search working with smart cameras.

24-BAY RAID + N+1 HOT SPARE

Twenty-four bays, and the array heals itself

Twenty-four hot-swap SATA bays, each up to 24 TB (up to 576 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

Built-in search across hundreds of channels

Face Detection, Face Comparison and Vehicle Detection (LPR) on Uniview smart cameras feed this recorder's VCA Search — Face Snapshot Search, Face Comparison Search, Motor/Non-Motor Vehicle Search, Human Body Search, People Counting Report and Heat Map — to narrow footage across up to 256 channels to the exact clip.

Full Specifications

Complete official specifications from the manufacturer's datasheet (technical values in English).

Highlighted rows differ between the two models:NVR524-128E · 128-chNVR524-256E · 256-ch

Decoding

Decoding Format	Ultra 265, H.265, H.264
Decoding Capability	2 × 32MP@30, 4 × 16MP@30, 5 × 12MP@30, 8 × 4K@30, 12 × 5MP@30, 20 × 3MP@30, 32 × 1080P@30, 64 × 720P@30, 128 × D1
Decoding Capability Description	The resolution of each channel cannot exceed 8640 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, clear the VGA video on the preview page.
Audio Compression	G.711A, G.711U

Network

Incoming Bandwidth	640 Mbps
Outgoing Bandwidth	640 Mbps
Max Users Can Be Added	128
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+
Browser (Plugin-Free)	Windows/MAC/Linux: IE not supported, Firefox (58.0+), Chrome (57.0+), Edge (16+), Safari (11+)

Video/Audio Input

IP Video Input	128E · 128-ch256E · 256-ch
RCA Audio Input	1-ch

Video/Audio Output

Video Output	Support 2-ch HDMI, 2-ch VGA; HDMI1 and VGA1 simultaneous output, HDMI2 and VGA2 simultaneous output; HDMI1/VGA1 and HDMI2/VGA2 independent output
HDMI Output	HDMI1: 8K (7680 × 4320)/30 Hz, 4K (3840 × 2160)/60 Hz, 1920 × 1080/60 Hz, 1600 × 1200/60 Hz, 1280 × 1024/60 Hz, 1280 × 720/60 Hz, 1024 × 768/60 Hz; HDMI2: 4K (3840 × 2160)/60 Hz, 1920 × 1080/60 Hz, 1600 × 1200/60 Hz, 1280 × 1024/60 Hz, 1280 × 720/60 Hz, 1024 × 768/60 Hz
VGA Output	1920 × 1080/60 Hz, 1600 × 1200/60 Hz, 1280 × 1024/60 Hz, 1280 × 720/60 Hz, 1024 × 768/60 Hz
HDMI Standard	HDMI1: 2.1, HDMI2: 2.0
RCA Audio Output	2-ch
Liveview Display	1/4/6/8/9/16/25/36/64
Default Num of Live Screen	64
Corridor Mode Screen	3/4/5/7/9/10/12/16/32
Playback Screen	1/4/9/16
Corridor Mode Screen of Playback	1/3
Two-way Audio	1-ch, RCA (Using the audio input and output)
Snapshot	FTP/Schedule/Event; 16-ch snapshot (max. 8 MP (3840 × 2160) video resolution, with 1080P snapshot resolution)

Recording

Recording Resolution	32MP/16MP/12MP/8MP/6MP/5MP/3MP/1080P/960P/720P/D1/2CIF/CIF
Num of Concurrent Playback	32-ch
Synchronous Playback in Local	16-ch

Smart

Smart by IPC	All channels (up to 32 images/s in total) Face Detection, Face Comparison, Vehicle Detection (LPR), Temperature Detection, SIP, UMD, 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, Heat Map

Alarm

General Alarm	Motion Detection, Tampering, Human Body Detection, Video Loss, Alarm Input, Audio Detection, People Present Alarm
Alert Alarm	IP Conflict, Network Disconnected, Disk Offline, Disk Abnormal, Illegal Access, Hard Disk Space Low, Hard Disk Full, Recording/Snapshot Abnormal, Array Damaged, Array Degraded

Hard Disk

SATA	24 SATA Interfaces
Capacity	Up to 24 TB for each HDD (the maximum HDD capacity varies with environment temperature and hard disk size; the environment temperature for use should not exceed 40°C)
Disk Group	Support
Redundant Storage	Support
Disk Array Type	RAID 0, 1, 5, 6, 10, 50, 60
Hot Swap	Support

External Interface

Network Interface	2 RJ45 10 M/100 M/1000 M self-adaptive Ethernet Interface
Network Working Mode	Multi-access, load balance, network fault-tolerance
USB	Front panel: 2 × USB2.0, Rear panel: 2 × USB3.0
RS485	1
RS232	1
Alarm In	16-ch
Alarm Out	10-ch
Power Output	12 V
Power Supply	AC 100 to 240 V
Buzzer	Support
Power Switch	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
Heat Dissipation	Fan, Radiator

Dimensions

Weight (without HDD)	≤ 10 kg (22.05 lb)
Height	4U
Dimensions	485 mm × 539 mm × 175 mm (19.1" × 21.2" × 6.9")

Certification

Certification	CE; FCC; RoHS; WEEE
CE	EN 55032, EN 61000-3-3, EN IEC 61000-3-2, EN 55035
FCC	Part15 Subpart B

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

Compliance

NDAA Compliant

Support

NVR524-128 / 256E

Is this the right recorder for you?

Worried about counterfeits? Order under your own company name.

Using your own freight forwarder? No problem.

Key Features

24 bays, self-healing RAID. Smart search built in.

Twenty-four bays, and the array heals itself

Built-in search across hundreds of channels

Which size fits your project?

Full Specifications

Decoding

Network

Video/Audio Input

Video/Audio Output

Recording

Smart

Alarm

Hard Disk

External Interface

Working Environment

Dimensions

Certification

GUI Language

Compliance

Dimensions

Optional Mounting Accessories

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