Ubiquiti UniFi Enterprise NVR Core (ENVR-Core) — 3U Rack-Mount 16-Bay Network Video Recorder for 500 HD / 300 4K Cameras with 128-Core ARM, 64 GB RAM, 2× 25G SFP28, Dual SFF-8644 Drive Expansion (Up to 48 Drives) and Hot-Swap Dual PSU

ENVR-Core

Ubiquiti UniFi Enterprise NVR Core (ENVR-Core) — 3U Rack-Mount 16-Bay Network Video Recorder for 500 HD / 300 4K Cameras with 128-Core ARM, 64 GB RAM, 2× 25G SFP28, Dual SFF-8644 Drive Expansion (Up to 48 Drives) and Hot-Swap Dual PSU

Features

• Top-tier 3U Enterprise NVR — built to anchor very large UniFi Protect deployments: hospitals, universities, transport interchanges, manufacturing campuses, hotel chains and large commercial real estate.
• (16) 2.5" / 3.5" HDD/SSD bays expandable to (48) drives total via (2) SFF-8644 24G expansion ports — connect external storage shelves without changing chassis.
• Records up to (300) UniFi Protect cameras at 4K, (400) at 2K or (500) at HD simultaneously — over 4× the ENVR's 4K capacity.
• Concurrently manages 300+ UniFi Access Hubs and runs UniFi Connect — single console for cameras, doors and signage.
• 128-core Arm® v8.2 processor at 2.6 GHz with 64 GB RAM — class-leading compute headroom for Protect AI event detection at scale, concurrent operator/review sessions, and future workloads.
• Networking: (2) 25G SFP28 ports (auto-negotiate 25G / 10G / 1G) + (1) GbE MGMT RJ45 — pairs naturally with the ECS-Aggregation switch for a 25G recording fabric.
• Hot-swap dual 550W CRPS (Common Redundant Power Supply standard) PSUs for true active/active redundancy at 100–240V AC, 7A max.
• Highly efficient: 237W max system consumption + 313W drive power budget — substantially less than the smaller ENVR despite handling 4× the cameras.
• Includes UACC-3U-Bezel-Lite faceplate in the box — front-panel display and status LEDs ready out of the box.
• Ethernet and Bluetooth management; iOS/Android UniFi Protect mobile apps.
• Slide rails for four-post 19" racks with square holes (9.5 × 9.5 mm) and post depths 600–1,066 mm.
• SGCC steel enclosure with aluminium mount; 10–35 °C ambient operating range, 20–90% non-condensing humidity.
• Managed entirely through UniFi Protect / Access / Connect — no per-camera, per-door or per-display licensing.
• Certifications: CE, FCC, IC.

Specifications

Professional Overview

The UniFi ENVR-Core is the top-tier Enterprise Network Video Recorder in the UniFi Protect range — a 3U full-depth chassis designed for very large recording loads where the regular ENVR runs out of headroom. Where the ENVR maxes out at (70) 4K or (210) HD cameras, the ENVR-Core scales to (300) 4K, (400) 2K or (500) HD cameras on a single chassis, and concurrently manages 300+ UniFi Access Hubs and UniFi Connect endpoints from the same console.

The differentiator is the compute platform. The ENVR-Core ships with a 128-core ARM v8.2 processor at 2.6 GHz and 64 GB of RAM — sixteen times the cores and twice the memory of the regular ENVR. That headroom matters because at 300 × 4K cameras the recorder is doing real work: video ingest, AI event detection, thumbnail generation, smart-event indexing, and dozens of concurrent operator and review sessions all running in parallel. The compute also opens the door to future Protect features such as live AI inference at higher tier counts.

Storage scales the same way. The base chassis takes (16) 2.5"/3.5" HDD/SSD bays with RAID protection, and (2) SFF-8644 24G expansion ports allow drive shelves to be added to a total of (48) drives without changing the host chassis. Networking is uprated to (2) 25G SFP28 ports (auto-negotiate down to 10G or 1G), so the recorder pairs naturally with the ECS-Aggregation switch for a 25G recording fabric — a 10G fan-in stops being adequate at 300-camera 4K loads. A separate GbE MGMT port keeps administration off the recording path.

Despite the larger capability envelope, the ENVR-Core is more efficient than the regular ENVR: 237W maximum system consumption + 313W drive power budget, against the ENVR's 410W max. Power is delivered by (2) hot-swap 550W CRPS PSUs in active/active redundancy. The chassis ships with the UACC-3U-Bezel-Lite faceplate in the box — front-panel display and status LEDs are ready on day one, no separate accessory purchase. Slide rails are four-post 19" with square holes (9.5 × 9.5 mm) and post depths from 600–1,066 mm. Ethernet plus Bluetooth management is offered; the operating envelope is 10–35 °C and 20–90% non-condensing humidity — purpose-built for a proper machine room rather than a wiring cupboard. Certifications cover CE, FCC and IC. Australian stock from ARC IP Networks.

Ubiquiti ENVR-Core: UniFi Protect recorder

The Enterprise NVR Core is a UniFi Protect recorder that manages 500 HD or 300 4K cameras, takes (16) 3.5" drive bays and connects over (2) 25G SFP28 ports (25G/10G/1G) (1) GbE MGMT RJ45 port (1G/100M).

3U UniFi Protect NVR with 16-bay support for 2.5"/3.5" HDDs/SSDs, up to (300) 4K or (500) Full HD cameras, hot-swappable power supplies and optional 16-bay storage expansion units.

It is the console the cameras record to — Protect runs on the recorder, footage stays on the drives you fit, and there is no cloud subscription.

Capacity and storage

Camera counts are a guide, not a hard limit — resolution, frame rate and retention all change what the ENVR-Core will comfortably carry. Our storage sizing guide works the numbers through.

RAID protects against a single drive failing. It is not a backup — it will not help if the unit is stolen or the site burns.

Drives are not included. Fit surveillance-rated drives rather than desktop disks; the full shopping list covers what else a recorder build needs.

Network and management

An SFP+ uplink matters once several 4K cameras record at once — see the UniFi switch range for a switch with a matching port.

Power

Physical and environmental

Who the ENVR-Core suits

• Sites past the point where a Cloud Gateway's built-in Protect can keep up
• Builds that need weeks of 4K retention rather than days
• Installs where the recorder, drives and cameras are specified as one system

How the ENVR-Core fits a UniFi Protect system

The ENVR-Core is the console: cameras are adopted by it, footage is written to its drives, and Protect is administered from it. There is no subscription and no cloud storage fee.

Compare it against the rest of the range in our UniFi Protect NVR comparison, size the disks with the storage guide, then pick cameras from the Protect camera range.

Buy the Ubiquiti ENVR-Core in Australia

ARC IP Networks is an authorised Ubiquiti reseller supplying the ENVR-Core from Australian stock, with full manufacturer warranty and fast shipping nationwide.

• Authorised Ubiquiti reseller — genuine Australian stock, not grey import
• Full manufacturer warranty with local RMA support
• Competitive Australian pricing, monitored against the local market daily
• Fast dispatch Australia-wide, or collect from our warehouse
• Trade and project pricing for installers, integrators and multi-site rollouts

Browse the full UniFi Protect range, plus PoE switches to power it and cloud gateways. More on buying from an authorised Ubiquiti reseller in Australia.