Product Type | Network Attached Storage (NAS) |
Model | TeraStation 3420DN |
Manufacturer | BUFFALO TECHNOLOGY |
Form Factor | Desktop |
Processor Type | Alpine AL214 |
Processor Clock Speed | 1.4 GHz |
Number of Processors | 1 |
Installed RAM | 1 GB DDR3 |
Total Storage Capacity | 8 TB |
Drive Type | NAS-grade SATA HDD |
Number of Drives Installed | 4 |
Drive Capacity per Drive | 2 TB |
Drive Interface | SATA 6 Gb/s |
Supported RAID Levels | 0, 1, 5, 6, 10, JBOD |
Power Supply Type | Internal |
Power Requirements | AC 100–240V, 50/60Hz |
Weight | 5.5 kg (Approx.) |
BUFFALO TeraStation 3420DN 8TB 4-Bay NAS with RAID and 2.5GbE





Key Benefits

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- Pre-tested NAS-grade drives and RAID pre-configuration reduce setup time and ensure reliability
- Includes a 3-year warranty with 24/7 US-based support, ideal for mission-critical business use
- TAA-compliant and made in Japan, making it suitable for government purchasing standards
Product Overview
The BUFFALO TeraStation 3420DN is a robust 4-bay NAS designed for small to medium businesses needing secure and dependable storage. Equipped with four pre-installed 2TB SATA hard drives, it delivers a total capacity of 8TB. These NAS-grade drives are pre-tested and RAID-configured, supporting JBOD, 0, 1, 5, 6, and 10. The device operates on a 1.4 GHz Alpine processor with 1 GB RAM, providing efficient performance for file transfers and backups over its 2.5GbE-compatible Gigabit Ethernet. With a compact desktop form factor and dimensions of 9.1 x 6.7 x 8.5 inches, it fits easily in office setups. It includes two USB 3.0 ports and an RJ-45 port for versatile connectivity. A 3-year warranty with 24/7 North American support adds reliability, and its TAA-compliance makes it suitable for government and institutional procurement. The TeraStation 3420DN delivers scalable, business-grade backup and iSCSI storage capabilities in a turnkey solution.
Specifications
Product Overview
Physical & Environmental
Width | 9.1 in (23.1 cm) |
Depth | 6.7 in (17 cm) |
Height | 8.5 in (21.6 cm) |
Operating Temperature Range | 5°C to 35°C |
Operating Humidity Range | 20% - 80% non-condensing |
Cooling | Internal fan |
Cloud Management & Licensing
Cloud Backup Support | Amazon S3, Dropbox, Microsoft Azure |
Management Interface | Web-based GUI |
Remote Access | Buffalo WebAccess, FTP/SFTP |
Active Directory Support | Yes |
License Included | No license required for base software |
Interfaces
Ethernet Ports | 1 x RJ-45 |
Ethernet Interface Speed | 2.5 Gigabit Ethernet |
Data Link Protocol | 2.5GbE |
USB Ports | 2 x USB 3.0 |
iSCSI Support | Yes |
Supported File Sharing Protocols | SMB/CIFS, AFP, FTP, SFTP, NFS |
Supported Operating Systems | Windows, macOS, Linux |
Compliance & Origin
Country of Origin | Japan |
TAA Compliant | Yes |
Certifications | FCC, VCCI, RoHS |
Warranty | 3 years with 24/7 North American-based support |
Advanced Security Features
Encryption | 256-bit AES Data Encryption |
User Access Control | Yes – User and Group-based Access |
Network Security Protocols | SSL/TLS, HTTPS |
Antivirus Support | Optional Add-On |