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Buffalo TeraStation 5420DN desktop NAS unit with four drive bays

Buffalo Technology

Buffalo Technology TeraStation 5420DN Desktop NAS 48TB 4-Bay 10GbE 8GB DDR3

SKU CH-219F-11CWF

A 48 TB desktop NAS with four bays, native 10GbE, 8 GB DDR3 ECC RAM, 256-bit AES encryption, snapshots, and cloud sync

  • Professional NAS with 48 TB capacity and drives included
  • Quad-core 2.0 GHz processor with 8 GB DDR3 ECC memory
  • Native 10 GbE port enables fast network transfers
  • 256-bit AES encryption plus two-factor authentication secures data
  • Snapshots provide near-instant backup and ransomware recovery

Purpose-Built SMB Storage

The Buffalo TeraStation 5420DN is a desktop NAS pre-populated with four 12 TB drives for 48 TB of raw capacity. It targets small businesses that need secure, centralised file storage, backup and cloud sync without assembling components themselves.

Sustained Workload Stability

A quad-core Annapurna Labs Alpine AL524 processor running at 2.0 GHz and 8 GB of DDR3 ECC memory keep throughput steady during long backup windows or multi-user access. The closed firmware and RAID protection prevent performance drops when the array rebuilds or snapshots run.

Secure Connectivity and Expansion

A native 10GbE port delivers fast transfers over existing Cat6a cabling, while 256-bit AES encryption and two-factor authentication protect data at rest. Cloud integration with Dropbox, Amazon S3, Azure and OneDrive adds off-site redundancy without extra hardware.

How it compares

Measured against everything we stock in Rack & Tower Servers, at today’s prices. Recalculated every night.

Price $1,964.99
Typical for this category: the median of 17,641 items is $1,910.99.

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Specifications

No published specifications for this item yet.

Questions about this item

How much power does the Annapurna Labs Alpine AL524 2.0 GHz quad-core processor draw under continuous 24/7 operation?

The AL524 quad-core processor is designed for sustained workloads, and the unit includes NAS-grade drives built for 24/7 duty cycles.

Which network infrastructure is required to use the native 10GbE port at full speed?

A 10GbE-capable switch and Cat6a or better cabling are needed to utilise the native 10GbE port at line rate.

Can the 8 GB DDR3 ECC memory be expanded when adding this unit to an existing 1 GbE network?

The 8 GB DDR3 ECC memory is fixed on this 4-bay model; expansion to 16 GB is only available on 12-bay variants.

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