Ubiquiti UNAS-4-W UniFi Storage with (2) 3.5" HDD bays WHT

Ubiquiti UNAS-4-W UniFi NAS Storage

Overview

The Ubiquiti UNAS-4-W (MPN: UNAS-4-W) is a compact network-attached storage appliance purpose-built for UniFi ecosystem deployments. Designed as a centralized storage solution for surveillance footage, backups, and network data, this unit integrates seamlessly with UniFi Network Console management infrastructure. The white desktop form factor accommodates two 3.5-inch HDD bays, enabling flexible capacity scaling from 4TB to 16TB depending on drive selection. Its compact footprint makes it suitable for equipment racks, server closets, or network cabinets in branch offices, retail locations, and enterprise sites.

Key Features

The UNAS-4-W operates over a single 2.5 GbE Ethernet port, providing sufficient throughput for multi-camera recording streams and concurrent backup operations typical of small to mid-sized deployments. Power delivery via PoE+++ adapter eliminates the need for dedicated AC outlets near network infrastructure, simplifying cable management in constrained spaces. A USB-C port enables direct device connectivity for local transfer operations or firmware updates. The unit weighs 5.7 pounds and operates as a member of the UniFi Accessories product family, ensuring consistent management workflows alongside UniFi Network Video Recorder and controller deployments. All management and configuration occurs through the native UniFi Network Console, requiring no separate administrative interfaces or third-party tools.

Deployment Scenarios

The UNAS-4-W serves distributed storage requirements where dedicated server-class hardware is unnecessary. Common deployments include multi-site surveillance networks requiring local NVR functionality at branch locations, centralized backup repositories for UniFi Protect camera systems, and network-attached storage for UniFi Dream Machine Pro or UDM SE environments. Its low power footprint and PoE+++ powering model work well in facilities with limited power infrastructure or where consolidating adapter counts is operationally important.

Network Integration

The 2.5 GbE Ethernet connection provides modern throughput without requiring 10 GbE infrastructure, appropriate for the performance envelope of typical camera streams and scheduled backups. The port integrates directly into any UniFi Switch or standard managed switch supporting 2.5G operation. The unit supports VLAN isolation and network segmentation through UniFi Network Console, allowing storage traffic separation from user or guest networks. No external management protocols or licensing are required—the UNAS-4-W operates as a managed device within the UniFi ecosystem.

Installation Notes

Mounting options include desktop placement on shelving, cable tray installation, or vertical orientation in compact spaces. The included PoE+++ adapter connects to any PoE+++ capable switch port—standard PoE and PoE+ sources will not power the unit. Verify switch port specifications before deployment. Once powered, the device auto-discovers in UniFi Network Console and appears as an available storage target for camera systems and backup jobs. Drive installation follows standard 3.5-inch bay procedures; consult Ubiquiti documentation for supported drive models and capacity maximums.

Karl Wilson, Infrastructure Engineer

"The UNAS-4-W fills a specific role: lightweight, PoE-powered NAS storage that doesn't require separate power drops or environmental conditioning. In branch office UniFi deployments, pairing this unit with a UniFi Switch and Dream Machine Pro creates a self-contained network appliance stack. The 2.5 GbE port is sufficient for 4–6 concurrent camera streams; beyond that threshold, evaluate UDM Pro+ or dedicated NVR hardware. The MPN UNAS-4-W units we've deployed have proven reliable in retail and hospitality environments where simplified management trumps raw performance."