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Buffalo TeraStation 4-bay desktop NAS in black finish

Buffalo Technology

Buffalo Technology TeraStation WS5420DN 4-Bay Desktop NAS 32TB Windows Server IoT 2025

SKU CH-N3WB-S2PG1

Four-bay desktop NAS storing 32 TB of data on included drives with Windows Server IoT 2025 pre-installed

  • Ready for deployment with Windows Server IoT 2025 pre-installed
  • 32 TB raw capacity from four 8 TB drives included
  • Four-bay desktop form factor fits standard office spaces
  • TAA compliant for government and regulated procurements
  • First listed by the manufacturer on January 10 2026

Four-bay desktop NAS with Windows Server IoT 2025

The Buffalo TeraStation WS5420DN is a four-bay desktop network-attached storage system that ships with 32 terabytes of raw capacity across four pre-installed 8 TB hard drives. It runs Windows Server IoT 2025 out of the box, providing a familiar management environment for file sharing, backup and application hosting. The unit is TAA compliant, making it eligible for government and institutional procurement. Small businesses and remote offices needing a ready-to-deploy Windows-based storage appliance will find it fits that role.

Rack-free chassis with front-panel lock and dual

The desktop form factor sits on a shelf or desk without rack rails, and a physical front-panel key secures drive access against casual removal. Two Ethernet ports are present, supplied with a Category 6a patch cable, allowing link aggregation or separate network paths for data and management traffic. An AC power cable is included for immediate connection to standard mains outlets. The lockable front bezel and dual network interfaces suit environments where physical security and network redundancy matter.

Setup media and quick-start documentation included

A setup SD card holds the installation image for Windows Server IoT 2025, letting administrators rebuild or re-image the system without external media. A printed quick setup guide walks through initial configuration steps, and a warranty statement outlines the manufacturer's coverage terms. These bundled items reduce the time from unboxing to production service and provide a recovery path if the OS drive fails. Organizations that prefer physical install media and concise on-paper instructions gain a practical advantage.

Highlights

  • Ready for deployment with Windows Server IoT 2025 pre-installed
  • 32 TB raw capacity from four 8 TB drives included
  • Four-bay desktop form factor fits standard office spaces
  • TAA compliant for government and regulated procurements
  • First listed by the manufacturer on January 10 2026

Specifications

BrandBUFFALO

Questions about this item

What network interface does the TeraStation WS5420DN use and what is its practical speed cap?

The unit ships with a 6a Ethernet cable, indicating a 10 GbE interface that caps at 10 gigabits per second in practice.

What physical space and mounting does the 4-bay desktop NAS require?

It is a 4-bay desktop chassis designed to hold four 3.5-inch drives and sits on a desk or shelf; no rack rails are included.

How is the WS5420DN initially set up and which step is commonly missed?

Connect the AC cable and 6a Ethernet cable, insert the setup SD card, then boot and follow the Quick Setup Guide; the step often missed is inserting the SD card before first power-on.

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