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Black rackmount NAS chassis with four drive bays and front status LEDs

Buffalo Technology

Buffalo Technology TS5420RN4804 4-Bay 48TB Rackmount NAS

SKU CH-YQRK-097KQ MPN TS5420RN4804

Rackmount NAS with four pre-installed 12 TB drives in RAID, a 2.04 GHz quad-core processor, 8 GB DDR4, native 10GbE and dual 1GbE ports

  • CPUAnnapurna Labs Alpine Processor AL524 (2.04 GHz Quad-Core)
  • Form factor4-Bay
  • Power draw62.85 W
  • Supported standardsIEEE 802.3, IEEE 802.3u, IEEE 802.3ab
  • LAN ports1 × 10GbE + 2 × 1GbE
  • USB ports2 x USB3.0 + 2 x USB2.0

Included HDD Capacity 48TB (4 x 12TB)

  • Pre-tested 12TB drives with RAID ready
  • 10GbE port plus dual 1GbE for fast transfers
  • 8GB DDR4 and quad-core AL524 processor
  • RAID 0, 1, 5, 6, 10 and JBOD supported
  • Cloud backup to S3, Azure, OneDrive, Dropbox

48TB Rackmount NAS with 10GbE

The Buffalo TeraStation 5420 is a four-bay rackmount network-attached storage appliance that ships with four 12TB NAS-grade hard drives pre-installed and RAID pre-configured. An Annapurna Labs Alpine AL524 quad-core processor running at 2.04 GHz and 8GB of DDR4 memory drive the unit. A native 10GbE RJ-45 port plus two 1GbE ports provide high-speed wired connectivity without requiring cable upgrades.

IT teams needing certified virtualization storage

VMware and Windows Server 2022 certification make this NAS suitable for virtualised workloads and enterprise backup targets. Snapshot technology and AES-256 encryption support near-instant recovery and data protection. Organisations without rack infrastructure or those requiring larger drive counts than four bays should evaluate alternative form factors.

Pre-configured RAID and cloud integration

Drives arrive tested and configured in RAID 0, 1, 5, 6, 10 or JBOD, eliminating initial set-up time. Built-in cloud connectors support Amazon S3, Dropbox, Microsoft Azure and OneDrive for hybrid backup strategies. A remote management console allows administrators to monitor multiple devices from a single interface, reducing operational overhead.

How it compares

Measured against everything we stock in Rack-Mounted NAS Servers, at today’s prices. Recalculated every night.

Price $1,726.99
Cheaper than about 93% of the 763 comparable items (median $6,564.99).

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
Model nameTS5420RN4804
Part numberTS5420RN4804
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 included48 TB (4 × 12 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
LAN ports1 × 10GbE + 2 × 1GbE
USB ports2 x USB3.0 + 2 x USB2.0
Power
Power draw62.85 W
Power details100-240 VAC 50/60 Hz
Size & build
Form factor4-Bay
Product dimensions29.0 × 16.93 × 1.74 in
Product weight18.69 lb (8.48 kg)
Shipping weight12.93 kg
Package size589 × 546 × 213 mm
Compatibility
Compatible drivesOP-HD12.0N
In the box
In the boxTeraStation, Quick Setup Guide, AC Cable, 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

4 more in the same range

Questions about this item

Do I need to buy hard drives separately for the TS5420RN4804?

The unit ships with four 12 TB NAS-grade drives installed, giving 48 TB total capacity and a pre-configured RAID array.

Can I connect my existing 1 GbE switch to the 10 GbE port?

The 10 GbE RJ-45 port auto-negotiates down to 1 GbE, so a legacy switch works without extra cabling.

How can I confirm the RAID array is healthy after first boot?

The front-panel HDD LEDs show green for normal operation and the web dashboard reports RAID status and drive health.

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