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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

  • 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 16TB (2 x 8TB)

Model 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.

How it compares

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

Price $870.99
Pricier than about 63% 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 nameTS5420DN1602
Part numberTS5420DN1602
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 included16 TB (2 × 8 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 weight6.80 kg
Package size381 × 356 × 318 mm
Compatibility
Compatible drivesOP-HD8.0N
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)

Other versions of this model

5 more in the same range

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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