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Product specifications

Buffalo TeraStation TS51220RH3204 NAS/storage server Rack (3U) Alpine AL524 16 GB DDR4 32 TB HDD Black

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4 x 8TB, Alpine Processor AL524 (2.04 GHz Quad-Core, 16GB DDR4, 2x10GbE, 2x1GbE

Part TS51220RH3204 · UPC 747464135427

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About this product

The TeraStation 5020 is Buffalo's mid-size enterprise network attached storage (NAS) designed as a

secure storage solution optimized for high workloads. Available in desktop and rackmount form factors, the

TS5020 comes with high capacities in partial- or fully-populated models with NAS-grade hard drives

included (enterprise-grade for TS51220RH models), allowing you to fulfill your data needs now while

leaving the option to expand later.

The TS5020 is an evolution of Buffalo's acclaimed TeraStation 5010 and 6000 Series devices, delivering

improved hardware and firmware with advanced productivity and security features. Updated CPU and

RAM offer smoother operations and reduced backup times, even with high-load environments, and full

compatibility with VMware and Hyper-V allows the TS5020 to be set as an iSCSI backup target so you can

fully leverage virtualization to enhance your performance and security. TS5020 supports remote

configuration through Buffalo's Remote Management Service to enable detailed system changes from

anywhere. As of firmware version 1.68, TS51220RH models also support NVMe caching for additional

performance enhancement to take on IOPS-heavy operations.

TS5020 runs on a closed system to mitigate cyberthreats such as ransomware. Other security features

also include two-factor authentication (2FA), drive encryption, and Buffalo's Abnormal Login and File

Activity Detection feature to help you stay one step ahead of ransomware. In addition, the TS5020 includes

the acclaimed snapshots feature from our TS6000 devices—a true game changer that backs up and

recover data near-instantaneously, without having to undergo cumbersome backup recovery processes.

Storage

Storage drive capacity
8 TB
Storage drive interface
Serial ATA III
Supported storage drive interfaces
Serial ATA III
RAID support
Yes
RAID levels
0, 6, 1, JBOD, 5, 10
Hot-swap drive bays
Yes
Supported file systems
BTRFS
Storage drives installed
Yes
Total installed storage capacity
32 TB
Number of storage drives installed
4
Number of storage drives supported
12
Installed storage drive type
HDD
Supported storage drive types
HDD & SSD

Processor

Processor manufacturer
Annapurna Labs
Processor family
Alpine
Processor model
AL524
Processor frequency
2 GHz
Processor cores
4

Memory

Internal memory
16 GB
Internal memory type
DDR4

Network

Ethernet LAN
Yes
Ethernet LAN data rates
1000,10000 Mbit/s

Ports & interfaces

USB port
Yes
USB 2.0 ports quantity
2
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
2
Ethernet LAN (RJ-45) ports
4

Design

Chassis type
Rack (3U)
Cooling type
Active
Product colour
Black

Performance

Type
NAS
Device class
Large Enterprise Business
Backup function
Yes
Backup features
Cloud, USB drive
Web-based management
Yes
On/off switch
Yes
Password authentication
Yes

Power

AC input voltage
100 - 240 V
AC input frequency
50/60 Hz

Weight & dimensions

Width
480 mm
Depth
480 mm
Height
86 mm
Weight
25.1 kg
Package width
975 mm
Package depth
582 mm
Package height
259 mm
Package weight
30.2 kg

Operational conditions

Operating temperature (T-T)
0 - 40 °C
Storage temperature (T-T)
10 - 85 °C

Specifications and images: Database Right data-sheet 2026 Icecat. All rights reserved. Supplied as is, without warranty. Specs Icecat · Open Content License

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