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Black rectangular desktop NAS enclosure with eight drive bays and front status LEDs

Buffalo Technology

Buffalo Technology TS5820DN3204 8-Bay 32TB NAS

SKU CH-8BXX-T4P4V MPN TS5820DN3204

Eight-bay desktop NAS with 32 TB of pre-installed drives, 10 GbE plus dual 1 GbE ports, quad-core 2.04 GHz processor and 8 GB DDR4 memory

  • CPUAnnapurna Labs Alpine Processor AL524 (2.04 GHz Quad-Core)
  • Form factor8-Bay
  • Port count1 × 10GbE + 2 × 1GbE
  • Power draw112 W
  • Supported standardsIEEE 802.3, IEEE 802.3u, IEEE 802.3ab
  • LAN ports1 × 10GbE + 2 × 1GbE

Included HDD Capacity 32TB (4 x 8TB)

Model Partially Populated

  • 32 TB raw capacity with four 8 TB NAS-grade drives pre-installed
  • Quad-core 2.04 GHz processor and 8 GB DDR4 memory for demanding workloads
  • Native 10 GbE plus two 1 GbE ports for high-speed file transfers
  • RAID 0, 1, 5, 6, 10 and JBOD with snapshot backup and AES-256 encryption
  • VMware and Windows Server 2022 certified for virtualization deployments

8-Bay 32TB Desktop NAS for Business

The Buffalo TeraStation 5020 ships with four 8TB NAS-grade drives pre-installed and RAID pre-configured for immediate deployment. An Annapurna Labs AL524 quad-core processor at 2.04 GHz and 8GB DDR4 memory handle demanding workloads. It targets organisations that need secure, high-capacity file storage without assembling components themselves.

Upgrade from Older TeraStation or Single-Drive Units

Moving from a legacy TS5010 or TS6000 series device adds native 10GbE connectivity and snapshot backup for near-instant recovery. The jump is worthwhile when teams require faster large-file transfers, VMware or Windows Server 2022 virtualization certification, and centralised remote management across multiple appliances. Buyers who need more than eight drive bays or enterprise-grade drives in every bay should consider other models.

Limits of 10GbE and SATA Interface

The single 10GbE port caps peak network throughput at ten gigabits per second, so aggregate speed cannot exceed that link even with RAID 0. SATA drive interfaces limit individual disk performance compared to newer protocols. Four drive bays remain unpopulated, restricting future expansion to four additional SATA drives. Cloud sync relies on external service availability and bandwidth.

How it compares

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

Price $1,528.99
Pricier than about 77% of the 230 comparable items (median $562.49).

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Specifications

Product
Brand nameBUFFALO
Product lineTeraStation 5020
Model nameTS5820DN3204
Part numberTS5820DN3204
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 interface8 x SATA (8 x Bay)
Drives included32 TB (4 × 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 + 2 × 1GbE
LAN ports1 × 10GbE + 2 × 1GbE
USB ports2 x USB3.0 + 2 x USB2.0
Power
Power draw112 W
Power details100-240 VAC 50/60 Hz
Size & build
Form factor8-Bay
Product dimensions9.06 × 11.81 × 8.46 in
Product weight23.7 lb (10.8 kg)
Shipping weight10.89 kg
Package size419 × 351 × 351 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

What drive interface and bay count does the TS5820DN3204 use for its 32TB capacity?

The unit provides eight SATA bays and ships with four 8TB drives installed for a total of 32TB.

How do I connect the NAS to the network and which step is often missed?

Plug the 10GbE port or one of the two 1GbE ports into your switch; the step often missed is enabling jumbo frames on the switch for the 10GbE link.

What drive model should I order when a bay needs a replacement drive?

Use the OP-HD8.0N NAS-grade drive, which matches the original 8TB specification.

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