Buffalo TeraStation WS5420 IoT 8TB 4-Bay NAS Server (4 x 2TB)

The Buffalo WS5420DN08S9 is an 8TB network attached storage server that runs Windows Server IoT 2019 and arrives ready to drop into any Windows-based network. It provides a familiar management experience that aligns with Active Directory, Azure, and OneDrive, so teams can move files or set up hybrid cloud workflows without learning new software.

Four enterprise-grade 2TB drives come pre-installed and tested in a RAID 5 array, giving you usable capacity alongside built-in redundancy from the first power-up. If a drive fails, data stays online and the array can be rebuilt after a simple hot-swap, making the unit a solid choice for small offices that need constant access to company files.

Inside, a 1.5 GHz Intel Atom C3338 dual-core processor works with 8 GB of ECC DDR4 memory. This combination keeps file shares responsive, supports data deduplication, and handles scheduled Shadow Copy snapshots without slowing daily work. A 10 GbE port is ready for high-speed backbones, while two additional Gigabit Ethernet ports offer flexible link aggregation or failover options.

Because the chassis is designed for 24/7 operation, it fits naturally in environments such as creative studios with large media libraries, branch offices that need a dependable backup target, or security deployments that store camera footage around the clock. A lockable front panel deters tampering, and server-class components help maintain uptime.

Integrated Windows features like Storage Spaces, BitLocker encryption, and policy-based backups make it straightforward to create layered protection strategies. Add the three-year warranty and around-the-clock North America-based support, and you have a storage platform that combines ease of use with long-term peace of mind.

• 8 TB total capacity delivered by four 2 TB drives, pre-configured in RAID 5 for immediate redundancy
• Windows Server IoT 2019 operating system that integrates seamlessly with Active Directory, Azure, and OneDrive
• 1.5 GHz Intel Atom C3338 dual-core processor joined by 8 GB ECC DDR4 memory for stable performance
• One built-in 10 GbE port plus two Gigabit Ethernet ports to support fast transfers and network flexibility
• Shadow Copy snapshots and data deduplication available through Windows features for efficient protection
• Lockable front panel and continuous-duty hardware designed for round-the-clock operation
• Hot-swap drive bays simplify maintenance without bringing the server offline
• Three-year warranty combined with 24/7 North America-based technical support