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Black 1U rackmount NAS chassis with four drive bays, front status LEDs and rear 10GbE plus dual 1GbE ports

Buffalo Technology

Buffalo Technology TS5420RN8004 4-Bay 80TB rackmount NAS

SKU CH-6B6B-RDG36 MPN TS5420RN8004

A 4-bay rackmount NAS with 80 TB of pre-installed drives, a quad-core 2.04 GHz processor, 8 GB DDR4, one 10GbE and two 1GbE ports, plus RAID 0, 1, 5, 6, 10 and JBOD support

  • StandardsIEEE 802.3, IEEE 802.3u, IEEE 802.3ab
  • 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)

Included HDD Capacity 80TB (4 x 20TB)

Struck-through versions exist but are not stocked here.

  • Ready-to-use storage with 80 TB pre-installed in RAID
  • Native 10 GbE port enables fast file transfers without new cabling
  • Quad-core 2.04 GHz processor and 8 GB DDR4 handle demanding workloads
  • Multiple RAID levels plus snapshots protect data against drive failure
  • VMware and Windows Server 2022 certified for virtualisation deployments

Product identity

The Buffalo Technology TS5420RN8004 is a 1U rackmount network-attached storage appliance pre-populated with four 20 TB NAS-grade hard drives for a total of 80 TB. It targets small and medium businesses that need a ready-to-deploy file server with integrated cloud backup and virtualization certification.

Deciding specification

A single native 10 GbE RJ-45 port sits alongside two 1 GbE ports, so the appliance fits straight into existing copper infrastructure without additional transceivers or cable upgrades. Buyers whose network core stops at 1 GbE will not benefit from the higher-speed uplink.

Bundled value

Drives arrive pre-tested and RAID-configured, eliminating the usual burn-in and array-build steps before production use. The package also includes a quick setup guide, AC power cable and warranty statement, while the management console enables centralised monitoring of multiple units from one interface.

Highlights

  • Ready-to-use storage with 80 TB pre-installed in RAID
  • Native 10 GbE port enables fast file transfers without new cabling
  • Quad-core 2.04 GHz processor and 8 GB DDR4 handle demanding workloads
  • Multiple RAID levels plus snapshots protect data against drive failure
  • VMware and Windows Server 2022 certified for virtualisation deployments

Specifications

BrandBUFFALO
ModelTS5420RN8004
Part NumberTS5420RN8004
StandardsIEEE 802.3, IEEE 802.3u, IEEE 802.3ab
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 Capacity80TB (4 x 20TB)
Drive CompatibilityOP-HD20.0N
RAIDRAID 0, 1, 5, 6, 10, and JBOD
Supported ProtocolsTCP/IP
LEDsPower, HDD (Hard Disk Drive), LAN (10/100)
Power100-240 VAC 50/60Hz
Power Consumption62.85W
UsageHigh read/write performance with RAID
Temperature0°C - 40 °C
Humidity0-80% RH non-condensing
Dimensions29.0 x 16.93 x 1.74 in
Weight18.69 lbs.
Package ContentsTeraStation, Quick Setup Guide, AC Cable, and Warranty Statement
Shipping weight13.15 kg
Package size584 × 533 × 203 mm

Other versions of this model

3 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How does the 80 TB raw capacity translate into usable space once RAID is configured?

With four 20 TB drives installed, RAID 5 yields about 60 TB usable, RAID 6 about 40 TB, and RAID 10 about 40 TB before formatting overhead.

What network speeds do the IEEE 802.3, 802.3u and 802.3ab ports actually deliver?

The standards cover 10 Mb/s, 100 Mb/s and 1 Gb/s Ethernet; the hardware provides one 10 GbE port and two 1 GbE ports for up to ten gigabits on a single link.

What rack depth and clearance does the 1.74 in high chassis require?

The unit measures 29.0 x 16.93 x 1.74 in and weighs 18.69 lbs, fitting a standard 1U rack space with at least 16.93 in of usable depth.

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