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Buffalo WS5420RN32W5 TeraStation 4-Bay Rackmount NAS - 32TB - 4 x 8TB HDD - Windows Server IoT 2025 - Intel Atom C3338 - 8GB DDR4 - 10GbE
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Technical guidance
Preparation & staging
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Product Features
Technical Overview
This TeraStation model features a 4-bay design supporting up to 48TB of total storage capacity with Serial ATA/600 drive interfaces. All four drive bays are populated with 8TB hard drives configured for immediate use, with RAID 0, 1, 5, and JBOD support for flexible storage management.
Network connectivity includes three RJ-45 ports supporting both 10 Gigabit Ethernet and Gigabit Ethernet standards, enabling high-speed data transfer and network redundancy. The system also provides three USB 3.2 Gen 1 ports for external storage expansion or peripheral connections.
Relevant factors for this section include Number of Hard Drives Supported, Number of Hard Drives Installed, Total Hard Drive Capacity Supported, Processor Manufacturer. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
Key Product Advantages
This Buffalo TeraStation combines enterprise storage features with simplified management through its integrated Windows Server IoT 2025 platform. The pre-installed operating system eliminates CAL requirements while providing full Windows Server data management capabilities.
Virtualization Ready
Supports expansive virtual machine capabilities to help reduce hardware costs, increase utilization, and enable streamlined remote work environments.
- VM support reduces physical server count
- Enables secure remote access to virtualized resources
Hybrid Cloud Integration
Seamlessly integrates with Azure, OneDrive, and other Microsoft-compatible cloud services to create flexible hybrid cloud environments.
- Azure Backup compatibility
- OneDrive synchronization
- Enhanced security through cloud integration
Comprehensive Data Protection
Includes multiple backup and recovery options including Shadow Copy, replication, and iSCSI target support for robust data protection strategies.
- Shadow Copy for point-in-time recovery
- iSCSI for block-level storage
- Cross-platform replication capabilities
Deployment / Use Cases
The WS5420RN32W5 is ideal for small to medium businesses requiring centralized storage with Windows Server management capabilities. Its rackmount form factor makes it suitable for data center environments where space optimization is critical.
Common deployment scenarios include departmental file servers, backup target storage, virtualization host storage, and hybrid cloud gateway implementations. The system's protocol support for iSCSI, CIFS/SMB, AFP, FTP, SFTP, and NFS ensures compatibility with diverse client environments including Windows, macOS, and Linux systems.
Relevant factors for this section include Number of Hard Drives Supported, Number of Hard Drives Installed, Total Hard Drive Capacity Supported, Processor Manufacturer. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
Localization and Operating System
This Buffalo TeraStation WS5420RN32W5 ships with Windows Server IoT 2025 pre-installed, providing a familiar Windows Server environment for storage management without requiring additional Client Access Licenses. The operating system supports a wide range of client platforms, including Windows 11, Windows 10, Windows 8.1, Windows 7, Windows Server 2022, Windows Server 2019, Windows Server 2016, Windows Server 2012, and Mac OS X 10.12 Sierra, ensuring compatibility across mixed IT environments.
The system is TAA compliant, making it suitable for government and educational procurement where regulatory adherence is critical. Manufactured in Japan, it meets high-quality standards, and the 3-year limited warranty provides reliable support for business deployments. This combination of software and compliance features offers a cost-effective, secure storage solution ready for immediate integration into diverse network infrastructures.
Operating System Compatibility
Windows Server IoT 2025 enables seamless integration with Microsoft ecosystem tools like Azure, OneDrive, and Active Directory, while supporting legacy and modern client operating systems for versatile deployment.
- No CALs required for Windows Server management
- Broad client OS support reduces compatibility concerns
- Ideal for hybrid cloud and on-premises storage needs
Physical Profile
Designed for standard 19-inch rack mounting, this TeraStation measures 1.70" (1U) in height with a 16.90" square footprint. The compact 1U form factor optimizes rack space while providing four drive bays for storage density. The included rail kit with mounting brackets and screws facilitates straightforward installation in standard server racks.
The physical profile is practical for deployment planning because the dimensions and weight are clearly defined: 1.70" (43.18 mm), 16.90" (429.26 mm), 16.90" (429.26 mm). This helps confirm rack, shelf, desk, or cabinet fit before installation.
- Width
- 16.90" (429.26 mm)
- Depth
- 16.90" (429.26 mm)
- Height
- 1.70" (43.18 mm)
What's in the Box
This Buffalo TeraStation ships complete with all necessary components for immediate deployment.
Highlights
- 4-bay rackmount NAS with 32TB pre-installed storage (4x8TB HDDs)
- Windows Server IoT 2025 operating system - no CALs required
- Intel Atom C3338 dual-core 1.50 GHz processor with 8GB DDR4 RAM
- 10 Gigabit Ethernet and Gigabit Ethernet support across 3 network ports
- RAID 0, 1, 5, and JBOD support for flexible storage configurations
- Hybrid cloud integration with Azure and OneDrive compatibility
- Virtual machine support for reduced hardware costs
- Comprehensive backup features including Shadow Copy and iSCSI
- TAA compliant for government and educational procurement
- 3-year limited warranty with Japanese manufacturing
Specifications
| Specifications | |
|---|---|
| Manufacturer | Buffalo Americas, Inc |
| Manufacturer Part Number | WS5420RN32W5 |
| Brand Name | Buffalo |
| Product Line | TeraStation |
| Product Series | WS5020 |
| Product Model | WS5420RN32W5 |
| Product Name | TeraStation WS5420RN32W5 SAN/NAS Storage System |
| Product Type | SAN/NAS Storage System |
| Storage | |
| Number of Hard Drives Supported | 4 |
| Number of Hard Drives Installed | 4 |
| Total Hard Drive Capacity Supported | 48 TB |
| Total Hard Drive Capacity Installed | 32 TB |
| Hard Drive Interface | Serial ATA/600 |
| Hard Drive Configuration | 4 x 8TB |
| Processor & Chipset | |
| Processor Manufacturer | Intel |
| Processor Type | Atom |
| Processor Model | C3338 |
| Processor Core | Dual-core (2 Core) |
| Processor Speed | 1.50 GHz |
| Memory | |
| Standard Memory | 8 GB |
| Memory Technology | DDR4 SDRAM |
| Network & Communication | |
| Ethernet Technology | 10 Gigabit Ethernet,Gigabit Ethernet |
| I/O Expansions | |
| Number of Total Expansion Bays | 4 |
| Controllers | |
| Controller Type | Serial ATA/600 |
| RAID Supported | Yes |
| RAID Levels | 0, 1, 5, JBOD |
| Interfaces/Ports | |
| Drive Interface | Serial ATA/600 |
| Total Number of USB Ports | 3 |
| Number of USB 3.2 Gen 1 Ports | 3 |
| Network (RJ-45) | Yes |
| Number of Network (RJ-45) Ports | 3 |
| Software | |
| Operating System | Windows Server IoT 2025 |
| Operating System Supported | Windows 11,Windows 10,Windows 10 x64,Windows 8.1,Windows 8.1 x64,Windows 7,Windows 7 x64,Windows Server 2022,Windows Server 2016,Windows Server 2019,Windows Server 2012,Windows Server 2012 R2,Mac OS X 10.12 Sierra,Windows 11 x64 |
| Management & Protocols | |
| Protocols | iSCSI,TCP/IP,CIFS/SMB,AFP,FTP,SFTP,NFS,SNMP |
| Physical Characteristics | |
| Height | 1.70" (43.18 mm) |
| Width | 16.90" (429.26 mm) |
| Depth | 16.90" (429.26 mm) |
| Form Factor | Rack-mountable |
| Miscellaneous | |
| Package Contents | TeraStation WS5420RN32W5 SAN/NAS Storage System AC Cable 6a Ethernet Cable Warranty Statement Quick Setup Guide Setup Media (SD Card) Rail Kit with Mounting Brackets and Screws |
| Country of Origin | Japan |
| TAA Compliant | Yes |
| Warranty | |
| Limited Warranty | 3 Year |
FAQ
What processor does this product use?
This product uses the Intel processor for everyday performance and multitasking.
How much memory is installed?
It includes 8 GB of memory to support responsive multitasking and daily workloads.
What storage is included?
The system includes 4 of storage for applications, files, and everyday business data.
What graphics or display support is listed?
Display-related specifications help position BUFFALO TeraStation WS5420RN 4-Bay Windows Server IoT 2025 Rackmount NAS 32TB (4x8TB) HDD Included TAA Compliant - Intel Atom C3338 (2 (WS5420RN32W5) for the kind of viewing experience, readability, and workspace fit buyers may expect in business it/storage arrays & nas/nas storage system deployments.
What connectivity options are available?
Connectivity options include 10 Gigabit Ethernet,Gigabit Ethernet, helping the product integrate into common office or home setups.
What operating system or platform is included?
The included operating environment is Windows Server IoT 2025, which helps position the product for software compatibility, deployment planning, and day-to-day business use.
| Qty | Price | Available |
|---|
