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Rectangular desktop NAS unit with four drive bays, matte black finish, front status LEDs

Buffalo Technology

Buffalo Technology TS5420DN1602 4-Bay 16TB Desktop NAS

SKU CH-0JYT-W557H MPN TS5420DN1602

Four-bay desktop NAS with 16 TB pre-installed, quad-core processor, 8 GB DDR4 and native 10GbE for high-speed business storage

  • 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 16TB (2 x 8TB)

Struck-through versions exist but are not stocked here.

Option Partially Populated

  • Ready-to-use storage with 16 TB pre-configured RAID and included NAS-grade drives
  • Quad-core 2.04 GHz processor and 8 GB DDR4 memory handle demanding workloads
  • Native 10 GbE port plus two 1 GbE links deliver high-speed network throughput
  • AES-256 encryption, two-factor authentication and snapshot backup protect business data
  • VMware- and Windows Server 2022-certified for virtualization deployments

What this NAS is and who it fits

The Buffalo Technology TS5420DN1602 is a four-bay desktop network-attached storage device that arrives with 16 terabytes of NAS-grade drives pre-installed and RAID pre-configured. It targets small-business teams or advanced home users who need a ready-to-run, high-capacity file server without sourcing drives separately.

Practical limits of the network interface

The unit provides one native 10-gigabit Ethernet port and two 1-gigabit Ethernet ports, all using RJ-45 connectors that work with standard Cat 6a or better cabling. Aggregate throughput will be bounded by the 10 GbE uplink, so environments that require multiple concurrent 10 GbE links will need additional infrastructure.

The spec that decides fit

The Annapurna Labs Alpine AL524 quad-core processor running at 2.04 GHz paired with 8 GB of DDR4 memory determines whether the NAS can sustain your workload. Buyers who need heavier virtualisation density or larger metadata caches should verify that this CPU and memory combination meets their performance threshold.

Highlights

  • Ready-to-use storage with 16 TB pre-configured RAID and included NAS-grade drives
  • Quad-core 2.04 GHz processor and 8 GB DDR4 memory handle demanding workloads
  • Native 10 GbE port plus two 1 GbE links deliver high-speed network throughput
  • AES-256 encryption, two-factor authentication and snapshot backup protect business data
  • VMware- and Windows Server 2022-certified for virtualization deployments

Specifications

BrandBUFFALO
SeriesTeraStation 5020
ModelTS5420DN1602
Part NumberTS5420DN1602
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 Capacity16TB (2 x 8TB)
RAIDRAID 0, 1, 5, 6, 10, and JBOD
Drive CompatibilityOP-HD8.0N
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 weight6.80 kg
Package size381 × 356 × 318 mm

Other versions of this model

5 more in the same range

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

Questions about this item

Should I choose the 16TB model or a different capacity for my storage needs?

This model ships with 16TB configured as 2 x 8TB drives in four bays, leaving two bays free for future expansion.

What does the 10GbE port deliver in actual file-transfer speed?

The native 10GbE port enables high-speed transfers without cable upgrades, limited by drive throughput and network conditions.

How does the SATA interface limit performance with the included drives?

The four SATA bays connect the 8TB drives; maximum throughput is governed by the SATA link and the AL524 quad-core processor.

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