| Product Type | Rackmount NAS |
| Included Operating System | Windows Server IoT 2019 Standard |
| Form Factor | 1U Rackmount |
| Processor Type | Intel Atom C3338 |
| Processor Clock Speed | 1.5 GHz |
| Processor Cache | 4 MB |
| Installed Memory | 8 GB DDR4 |
| Drive Bays | 4 x 3.5" |
| Drive Type | SATA 6 Gb/s NAS HDD |
| Installed Drive Capacity | 4 x 10 TB |
| Total Storage Capacity | 40 TB |
| RAID Support | JBOD, RAID 0, 1, 5 |
| Power Supply Type | Internal Power Supply |
| Power Requirements | 100-240V AC, 50/60 Hz |
BUFFALO TeraStation 5420RN 40TB Windows Server IoT Rackmount NAS
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Regular price
$4,729.00
Regular price
Sale price
$4,729.00
Unit price
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MSRP: $6,291.00
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- 40TB total storage capacity with 4x10TB SATA 6 Gb/s drives
- Supports RAID configurations: JBOD, RAID 0, 1, 5
- Equipped with Intel Atom C3338, 1.5 GHz processor and 4 MB cache
- 8 GB DDR4 RAM for efficient multitasking and storage management
- Gigabit Ethernet, USB 3.0, and RJ-45 for flexible connectivity
- Compact 1U rackmount form factor with TAA compliance
Shipping & Returns
Shipping & Returns
All our products can be shipped anywhere in the Continental United States.
Key Benefits
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- Includes Windows Server IoT 2019 Standard for enterprise-ready operation out of the box
- TAA compliance and Japanese manufacturing ensure high build quality and government deployment readiness
- Flexible RAID and iSCSI support allow tailored performance, capacity, and data security configurations
Product Overview
The BUFFALO TeraStation 5420RN is a 4-bay rackmount NAS preloaded with Windows Server IoT 2019 Standard and optimized for enterprise file sharing, backups, and virtualization support through the iSCSI protocol. Its total capacity of 40TB is achieved using four 10TB SATA 6 Gb/s drives, with full support for JBOD and RAID 0, 1, and 5 configurations — making it adaptable to performance or redundancy-focused deployments. A compact 1.7-inch height and 16.9-inch width and depth ensure it installs seamlessly in standard server racks.
Powered by an Intel Atom C3338 processor with a 1.5 GHz clock speed and 4 MB cache, accompanied by 8 GB DDR4 RAM, the system is engineered to handle demanding workloads with efficiency and stability. Dual Gigabit Ethernet interfaces, plus USB 3.0 and RJ-45 connectivity, provide versatile data access and expansion options. Manufactured in Japan with TAA compliance, this NAS is ideal for secure government and enterprise environments requiring dependable data protection.
Its industrial-grade build, advanced RAID support, and out-of-the-box server functionality minimize deployment time and total cost of ownership, making the TeraStation 5420RN a cost-effective yet powerful network storage solution.
Specifications
Product Overview
Physical & Environmental
| Dimensions (WxDxH) | 16.9 x 16.9 x 1.7 inches |
| Form Factor Height | 1U |
| Operating Temperature | 5°C to 35°C (41°F to 95°F) |
| Storage Temperature | -20°C to 60°C (-4°F to 140°F) |
| Operating Humidity | 20% to 80% (non-condensing) |
| Storage Humidity | 20% to 90% (non-condensing) |
| Cooling System | Internal fan |
| Mounting | Standard rackmount brackets included |
Cloud Management & Licensing
| Remote Management | Buffalo NAS Navigator, Windows Server Management tools |
| License Included | Windows Server IoT 2019 Standard |
| Cloud Backup Support | Supports Azure Backup (licensing required) |
Interfaces
| Ethernet Ports | 2 x RJ-45 Gigabit Ethernet |
| USB Ports | 2 x USB 3.0 |
| Data Transfer Rate - Ethernet | 10/100/1000 Mbps |
| iSCSI Support | Yes |
| Supported Data Link Protocols | Gigabit Ethernet |
| Interface Type - Drives | SATA 6 Gb/s |
Compliance & Origin
| Country of Origin | Japan |
| TAA Compliant | Yes |
| Certifications | FCC Class A, VCCI, RoHS, UL |
Advanced Security Features
| User Authentication | Windows Active Directory Integration |
| Access Control | User/Group Permissions |
| BitLocker Drive Encryption Support | Yes |
| SMB Encryption | Supported |
| Auto Backup Scheduling | Yes |
