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Buffalo TeraStation 5420 four-bay desktop NAS in matte black finish

Buffalo Technology

Buffalo Technology TS5420DN0802 4-Bay 8TB Desktop NAS

SKU CH-PM3W-FWRAA MPN TS5420DN0802

Four-bay desktop NAS with 8 TB of pre-installed drives, a quad-core 2.04 GHz processor, 8 GB DDR4 memory and a native 10 GbE port

  • TypeDesktop NAS
  • StandardsIEEE 802.3, IEEE 802.3u, IEEE 802.3ab
  • Ports1 x 10GbE
  • Port RJ-451 x 10GbE + 2 x 1GbE
  • Port USB2 x USB3.0 + 2 x USB2.0
  • HDD Interface4 x SATA (4 x Bay)

Included HDD Capacity 8TB (2 x 4TB)

Option Partially Populated

  • Pre-tested NAS-grade drives included and RAID pre-configured for immediate use
  • Native 10GbE port enables high-speed file transfers without cable upgrades
  • VMware- and Windows Server 2022-certified for virtualization deployments
  • AES-256 encryption with 2-factor authentication and snapshot backup protects data
  • Remote Management System controls multiple devices from a single console

4-Bay Desktop NAS with 8 TB Storage

The Buffalo TeraStation 5420 delivers a pre-populated 8 TB desktop NAS using two 4 TB NAS-grade drives. A quad-core Annapurna Labs AL524 processor running at 2.04 GHz and 8 GB of DDR4 memory power the unit for small-business file sharing and backup workloads.

Sustained Load Behaviour

RAID levels 0, 1, 5, 6, 10 and JBOD are pre-configured so data protection begins immediately. The AL524 quad-core architecture maintains throughput during concurrent multi-user access while snapshot technology provides near-instantaneous backup and recovery without interrupting ongoing transfers.

10GbE and USB Interface Limits

A single native 10GbE RJ-45 port alongside two 1 GbE ports handles high-speed file transfers over existing cabling. Two USB 3.0 and two USB 2.0 ports allow direct-attached expansion or printer sharing. Cloud integration with Amazon S3, Dropbox, Azure and OneDrive extends the storage boundary beyond the local network.

Highlights

  • Pre-tested NAS-grade drives included and RAID pre-configured for immediate use
  • Native 10GbE port enables high-speed file transfers without cable upgrades
  • VMware- and Windows Server 2022-certified for virtualization deployments
  • AES-256 encryption with 2-factor authentication and snapshot backup protects data
  • Remote Management System controls multiple devices from a single console

Specifications

BrandBUFFALO
SeriesTeraStation 5020
ModelTS5420DN0802
Part NumberTS5420DN0802
TypeDesktop NAS
StandardsIEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Ports1 x 10GbE
Port RJ-451 x 10GbE + 2 x 1GbE
Port USB2 x USB3.0 + 2 x USB2.0
HDD Interface4 x SATA (4 x Bay)
Form Factor4-Bay
ProcessorAnnapurna Labs Alpine Processor AL524 (2.04 GHz Quad-Core)
Installed Memory8GB DDR4
Included HDD Capacity8TB (2 x 4TB)
RAIDRAID 0, 1, 5, 6, 10, and JBOD
Drive CompatibilityOP-HD4.0N
Supported ProtocolsTCP/IP
LEDsPower, HDD (Hard Disk Drive), LAN (10/100)
Power100-240 VAC 50/60Hz
Power Consumption60W
Temperature0°C - 40 °C
Humidity0-80% RH non-condensing
UsageHigh read/write performance with RAID
Dimensions9.1 x 6.7 x 8.5 in
Weight18.1 lbs
Package ContentsTeraStation, Quick Setup Guide, AC Cable, Front Panel Key, and Warranty Statement
Shipping weight6.94 kg
Package size373 × 366 × 323 mm

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Questions about this item

How much power does the TS5420DN0802 draw when it runs continuously?

The unit is rated at 60W and operates from a 100-240 VAC 50/60Hz supply.

What network infrastructure is required to use the 10GbE port on this NAS?

A 10GbE-capable switch or router with an RJ-45 port and Cat6a or better cabling.

Will the TS5420DN0802 work with the 1GbE switches and Cat5e cables already in my office?

Yes, the two 1GbE RJ-45 ports auto-negotiate to 1GbE speeds over existing Cat5e infrastructure.

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