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Silver rackmount NAS chassis with twelve front drive bays and status LEDs

Buffalo Technology

Buffalo Technology TS51220RH4812 12-bay rackmount NAS 48TB 16GB DDR4 AL524 2.04GHz

SKU CH-JVXX-S5RNY MPN TS51220RH4812

12-bay rackmount NAS with 48 TB pre-installed storage, 16 GB DDR4, quad-core 2.04 GHz processor, dual 10 GbE and dual 1 GbE ports, supporting RAID 0, 1, 5, 6, 10 and JBOD

  • CPUAnnapurna Labs Alpine Processor AL524 (2.04 GHz Quad-Core)
  • Form factor12-Bay
  • Power draw140.01 W
  • Supported standardsIEEE 802.3, IEEE 802.3u, IEEE 802.3ab
  • LAN ports2 × 10GbE + 2 × 1GbE
  • USB ports2 x USB3.0 + 2 x USB2.0

Included HDD Capacity 48TB (12 x 4TB)

Model Partially Populated

  • High capacity storage ready with 48TB across twelve 4TB drives
  • Quad-core 2.04GHz processor handles demanding workloads smoothly
  • Dual 10GbE ports deliver fast network throughput for teams
  • Multiple RAID options protect data against drive failures
  • Sixteen gigabytes DDR4 memory supports concurrent applications efficiently

12-bay rackmount NAS with 48TB

The Buffalo Technology TS51220RH4812 is a 12-bay rackmount network-attached storage system pre-populated with twelve 4TB drives for 48TB total capacity. It runs on an Annapurna Labs AL524 quad-core processor at 2.04GHz with 16GB DDR4 memory. Designed for businesses needing high read/write performance through hardware RAID in a 2U form factor.

Dual 10GbE and 1GbE network ports

Connectivity is handled by two 10GbE and two 1GbE RJ-45 ports supporting IEEE 802.3, 802.3u and 802.3ab standards. This mix allows fast backbone links and standard client access simultaneously. The single specification that decides fit is whether your infrastructure can use 10GbE uplinks; without 10GbE switching the extra throughput cannot be realised.

Tool-less drive bays and included railkit

Installation uses tool-less drive trays that slide into the front bays and a railkit for rack mounting. The unit weighs 55.37 lbs so two people or a lift are recommended for rack placement. Common issues include forgetting to initialise the RAID array before storing data and not configuring the 10GbE ports for jumbo frames to reach advertised throughput.

How it compares

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

Price $4,661.99
Cheaper than about 70% 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 nameTS51220RH4812
Part numberTS51220RH4812
Recommended useHigh read/write performance with RAID
Processor
CPUAnnapurna Labs Alpine Processor AL524 (2.04 GHz Quad-Core)
Memory
Installed RAM16 GB DDR4
Storage
Drive interface12 x SATA (12 x Bay)
Drives included48 TB (12 × 4 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 ports2 × 10GbE + 2 × 1GbE
USB ports2 x USB3.0 + 2 x USB2.0
Power
Power draw140.01 W
Power details100-240 VAC 50/60 Hz
Size & build
Form factor12-Bay
Product dimensions29.0 × 18.9 × 3.4 in
Product weight55.37 lb (25.1 kg)
Shipping weight30.16 kg
Package size978 × 582 × 259 mm
Compatibility
Compatible drivesOP-HD4.0H2U-5Y
In the box
In the boxTeraStation, Railkit, Quick Setup Guide, AC Cable, and Warranty Statement
Environment & compliance
Temperature range0 °C - 40 °C
Humidity range10-80% Non-condensing
More details
Indicator lightsPower, HDD (Hard Disk Drive), LAN (10/100)

Other versions of this model

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Questions about this item

How does the AL524 2.04 GHz quad-core processor with 16GB DDR4 handle heavy RAID workloads?

The quad-core AL524 at 2.04 GHz paired with 16GB DDR4 delivers high read/write throughput across RAID 0, 1, 5, 6, 10 and JBOD arrays.

What do the two 10GbE ports actually cap at in a typical network?

Each 10GbE port supports up to 10 Gbps per IEEE 802.3ab; real-world throughput depends on switch, cabling and client capabilities.

What rack depth and clearance does the 12-bay chassis need?

The unit measures 29.0 x 18.9 x 3.4 in and includes a railkit for standard rack mounting.

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