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Buffalo TeraStation 5420 4-bay desktop NAS in black finish with front drive bays

Buffalo Technology

Buffalo Technology TS5420DN6404 4-Bay 64TB Desktop NAS

SKU CH-J3MY-KYGXP MPN TS5420DN6404

Four-bay desktop NAS with 64 TB of pre-installed drives, a native 10GbE port, quad-core processor and RAID 0/1/5/6/10/JBOD support

  • CPUAnnapurna Labs Alpine Processor AL524 (2.04 GHz Quad-Core)
  • Form factor4-Bay
  • Port count1 × 10GbE
  • Power draw60 W
  • Supported standardsIEEE 802.3, IEEE 802.3u, IEEE 802.3ab
  • LAN ports1 × 10GbE + 2 × 1GbE

Included HDD Capacity 64TB (4 x 16TB)

Model Fully Populated

  • Ready-to-use storage with 64 TB pre-installed drives
  • 10 GbE port enables fast network transfers
  • Quad-core 2.04 GHz processor handles heavy workloads
  • RAID 0, 1, 5, 6, 10 and JBOD protect data
  • AES-256 encryption and 2-factor authentication secure access

Ready-to-use 64 TB NAS

The Buffalo TeraStation 5420 arrives with four 16 TB NAS-grade drives installed and RAID pre-configured. A quad-core Annapurna Labs Alpine AL524 processor at 2.04 GHz and 8 GB DDR4 memory handle file serving, backup and virtualization workloads for small businesses.

Native 10 GbE uplink

A single 10 GbE RJ-45 port connects directly to a 10 GbE switch or workstation without extra cabling, while two additional 1 GbE ports handle standard LAN traffic. This port mix decides whether the unit fits a high-speed backbone or a conventional gigabit network.

Cloud sync and remote console

Built-in support for Amazon S3, Dropbox, Microsoft Azure and OneDrive lets the NAS push or pull cloud backups without a host PC. The Remote Management System aggregates multiple TeraStations into one browser console, and VMware plus Windows Server 2022 certification covers virtualized deployments.

How it compares

Measured against everything we stock in Multi-Bay Desktop NAS, at today’s prices. Recalculated every night.

Price $1,724.99
Pricier than about 80% of the 230 comparable items (median $562.49).

New to this? Paying with USDT: TRC-20 or ERC-20 — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameBUFFALO
Product lineTeraStation 5020
Model nameTS5420DN6404
Part numberTS5420DN6404
Product typeDesktop NAS
Recommended useHigh read/write performance with RAID
Processor
CPUAnnapurna Labs Alpine Processor AL524 (2.04 GHz Quad-Core)
Memory
Installed RAM8 GB DDR4
Storage
Drive interface4 x SATA (4 x Bay)
Drives included64 TB (4 × 16 TB)
Supported RAID modes0, 1, 5, 6, 10, and JBOD
Connectivity
Supported standardsIEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Protocol supportTCP/IP
Ports & slots
Port count1 × 10GbE
LAN ports1 × 10GbE + 2 × 1GbE
USB ports2 x USB3.0 + 2 x USB2.0
Power
Power draw60 W
Power details100-240 VAC 50/60 Hz
Size & build
Form factor4-Bay
Product dimensions9.1 × 6.7 × 8.5 in
Product weight18.1 lb (8.21 kg)
Shipping weight8.30 kg
Package size368 × 358 × 318 mm
Compatibility
Compatible drivesOP-HD16.0N
In the box
In the boxTeraStation, Quick Setup Guide, AC Cable, Front Panel Key, and Warranty Statement
Environment & compliance
Temperature range0 °C - 40 °C
Humidity range0-80% RH non-condensing
More details
Indicator lightsPower, HDD (Hard Disk Drive), LAN (10/100)

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Questions about this item

What does the 64 TB capacity mean once the NAS is running?

The unit ships with four 16 TB NAS-grade drives pre-installed and RAID-configured; usable space depends on the RAID level selected.

What does the 10GbE port actually cap in daily use?

The single 10GbE RJ-45 port supports up to 10 Gb/s throughput when connected to a 10GbE switch or client with Cat6a or better cabling.

What physical space and drive format does the 4-bay chassis need?

The desktop enclosure measures 9.1 x 6.7 x 8.5 in and accepts four 3.5-inch SATA drives in its front-accessible bays.

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