Buffalo WS5420DN08S9

Overview

The Buffalo WS5420DN08S9 is an 8TB network attached storage (NAS) server designed to integrate seamlessly into Windows-based networks using Windows Server IoT 2019. It comes pre-configured with four 2TB enterprise-grade drives in a RAID 5 array, providing both ample storage and built-in redundancy from the start. Powered by a 1.5 GHz Intel Atom C3338 dual-core processor and 8 GB of ECC DDR4 memory, this NAS delivers responsive file sharing and supports advanced features like data deduplication and scheduled Shadow Copy snapshots without impacting daily operations.

Its robust design supports continuous 24/7 operation, making it well suited for environments such as creative studios managing large media libraries, branch offices requiring reliable backup targets, or security setups storing constant camera footage. The lockable front panel and server-class components enhance security and uptime, while integrated Windows features simplify data protection and management.

Key features

• Pre-installed RAID 5 array with four 2TB drives offers immediate data redundancy and usable capacity.
• Runs Windows Server IoT 2019 for native compatibility with Active Directory, Azure, and OneDrive, enabling hybrid cloud workflows without extra software learning.
• 1.5 GHz dual-core Intel Atom processor combined with 8 GB ECC DDR4 memory ensures stable and efficient file sharing performance.
• Includes a 10 GbE port for high-speed network backbones plus two Gigabit Ethernet ports for flexible link aggregation or failover configurations.
• Supports Windows Storage Spaces, BitLocker encryption, and policy-based backups to create layered data protection strategies.
• Hot-swappable drive bays allow easy maintenance and drive replacement without downtime.
• Lockable front panel deters unauthorized access, enhancing physical security.
• Designed for continuous operation with server-grade hardware to maintain reliability around the clock.
• Backed by a three-year warranty and 24/7 North America-based technical support for long-term peace of mind.

Key specs

• Total storage capacity: 8 TB (4 x 2 TB drives)
• Processor: Intel Atom C3338 dual-core 1.5 GHz
• Memory: 8 GB ECC DDR4
• Operating system: Windows Server IoT 2019
• Network interfaces: 1 x 10 GbE port, 2 x Gigabit Ethernet ports
• RAID configuration: RAID 5 pre-configured
• Drive bays: 4 hot-swappable
• Physical security: Lockable front panel

Connectivity and compatibility

This NAS server offers versatile network connectivity options to fit various infrastructure needs. The built-in 10 GbE port supports fast data transfers suitable for high-demand environments, while the two additional Gigabit Ethernet ports provide options for link aggregation to increase bandwidth or failover to maintain network availability. Its Windows Server IoT 2019 operating system ensures smooth integration with existing Windows networks, including Active Directory for user management and Azure or OneDrive for hybrid cloud storage workflows.

Ideal uses and environments

The WS5420DN08S9 is a strong choice for small to medium-sized offices that require reliable, always-on access to shared files with built-in data protection. Creative professionals managing large media files will benefit from its high-speed networking and stable performance. Branch offices can use it as a dependable backup target, while security teams can store continuous camera footage securely. Its design supports 24/7 operation, making it suitable for any setting where uptime and data integrity are critical.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, and include all tags, manuals, accessories, and original, unaltered packaging. To start a return, please email us for approval. Items sent back without approval may be refused or returned to the sender. If any item is kept, its value will be deducted from the refund.

Non-returnable items include opened TVs, combos, or monitors 37″ or larger, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method. Please allow 5–7 business days for the credit to post. Shipping and handling are nonrefundable. If an item is used, incomplete, or not in its original condition, a 30% restocking fee may apply. Direct exchanges are not offered. To exchange an item, please purchase the replacement separately and return the original for a refund.

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We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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