Product Type | Network Attached Storage (NAS) |
Form Factor | Desktop |
Processor | Intel Atom C3338 Dual-Core |
Processor Speed | 1.5 GHz |
Installed Memory | 8 GB DDR4 |
Operating System | Microsoft Windows Storage Server 2016 |
Total Storage Capacity | 32 TB |
Drive Configuration | 2x16TB HDD (included), 4 bays total |
Drive Interface | SATA III (6 Gb/s) |
RAID Support | JBOD (RAID supported via OS) |
Power Supply | Internal |
Power Consumption | 85 Watts |
BUFFALO TeraStation 5420DN 32TB Desktop NAS, 4-Bay (2x16TB HDD) TS5420DN3202





Key Benefits

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- Expandable storage design allows businesses to scale from 32TB up to 64TB with ease.
- Enterprise-level OS (Windows Storage Server 2016) ensures robust data management features.
- High-speed 10GbE-ready network connectivity supports demanding workloads and fast data access.
Product Overview
Designed for professional environments, the BUFFALO TeraStation 5420DN delivers robust and scalable network-attached storage in a compact desktop form factor. Equipped with two pre-installed 16TB SATA III drives (totaling 32TB) and two additional bays for future expansion, this unit offers flexibility for businesses looking to grow their storage capacity. The storage operates in JBOD mode and supports RAID configuration capabilities (not explicitly stated), making it suitable for data-intensive applications.
The unit is powered by an Intel Atom C3338 dual-core processor running at 1.5 GHz, combined with 8 GB of DDR4 memory, ensuring stable performance for multi-user file access, data backup, and virtualization workloads. Connectivity includes a 10GbE-capable Gigabit Ethernet RJ-45 port and two USB 3.0 ports, making it ideal for quick data transfers and peripheral connections. The system runs on Microsoft Windows Storage Server 2016, offering advanced file and storage management tools suitable for SMBs and enterprise branch offices.
The TeraStation’s compact footprint (170 mm W x 215 mm D x 230 mm H) and 85W power consumption make it efficient for office deployments. Built in Japan with TAA compliance, it supports secure government and enterprise use cases. While RAID modes beyond JBOD are not confirmed, the system’s partially populated configuration allows for tailored deployments and cost management.
Specifications
Product Overview
Wireless Features
Wi-Fi Capabilities |
Compliance & Origin
Country of Origin | Japan |
TAA Compliant | Yes |
Certifications | FCC, CE, VCCI, RoHS |
Environmental Standards | RoHS Compliant |
Warranty | 3-Year Limited Warranty |
Advanced Security Features
Access Control | Active Directory integration, User/Group permissions |
Data Encryption | AES 256-bit volume encryption |
Network Security | SSL/TLS encryption, FTP/SMB over TLS |
Firewall | Integrated software-based firewall |
Antivirus Support | Optional via third-party software |
Backup Security | Scheduled and incremental backup with encryption support |
Interfaces
Ethernet Ports | 1 x RJ-45 |
Ethernet Speed | 10/100/1000 Mbps (Gigabit Ethernet) |
USB Ports | 2 x USB 3.0 Type-A |
USB Version | USB 3.0 |
External Expansion Ports | USB 3.0 for external storage or peripherals |
Physical & Environmental
Dimensions (W x D x H) | 170 x 215 x 230 mm |
Weight | Approx. 9.7 kg (with drives) |
Cooling | Internal fan |
Operating Temperature | 5°C to 35°C (41°F to 95°F) |
Non-Operating Temperature | -20°C to 60°C (-4°F to 140°F) |
Operating Humidity | 20% to 80% (non-condensing) |
Non-Operating Humidity | 10% to 90% (non-condensing) |
Noise Level | 28 dB (typical) |
Cooling Fan Control | Automatic |
Cloud Management & Licensing
Management Interface | Web-based GUI, Buffalo NAS Navigator |
Remote Access Options | Buffalo WebAccess |
Cloud Backup Support | Supports Amazon S3, Dropbox |
Licensing Requirements | No additional software licensing required for basic operation |