Buffalo TS5420DN6404

Overview

The Buffalo TS5420DN6404 is a four-bay desktop NAS server designed to provide 64TB of storage with four pre-installed 16TB hard drives. It serves as a reliable central hub for small and mid-size businesses to store, share, and back up large files without relying on public cloud services. Powered by a 2.04 GHz Annapurna Labs AL524 processor and 8 GB of DDR4 memory, it handles multiple simultaneous users and high-resolution media streaming with ease.

Key features

• Four pre-installed 16TB drives deliver ample storage capacity right out of the box, reducing setup time.
• Dual 10 GbE and dual 1 GbE network ports offer flexible connectivity options to fit various network infrastructures and optimize transfer speeds.
• Support for RAID 0, 1, 5, 6, 10, and JBOD configurations allows you to balance performance, redundancy, and storage capacity according to your needs.
• Hot-swappable drive bays enable quick replacement of drives without shutting down the system, minimizing downtime.
• Hardware-based 256-bit encryption safeguards data by making it unreadable if drives are removed, enhancing security.
• Two-factor authentication adds an extra layer of protection during user login to prevent unauthorized access.
• Cloud integration with Dropbox, Amazon S3, and Microsoft Azure enables automated off-site backups without requiring additional software.
• USB-A 2.0 and USB-A 3.2 Gen 1 ports provide convenient options for importing data from external drives or backing up critical files.

Key specs

• Storage capacity: 64TB (four 16TB HDDs pre-installed)
• Processor: 2.04 GHz Annapurna Labs AL524
• Memory: 8 GB DDR4
• Network ports: 2 x 10 GbE, 2 x 1 GbE
• USB ports: USB-A 2.0, USB-A 3.2 Gen 1
• RAID support: 0, 1, 5, 6, 10, JBOD
• Encryption: Hardware-based 256-bit

Connectivity and compatibility

The TeraStation fits seamlessly into existing network environments thanks to its combination of dual 10 GbE and dual 1 GbE ports. This allows you to connect at high speeds where infrastructure supports it or fall back to standard gigabit connections as needed. USB ports facilitate quick data transfers from external drives, making it easy to import or back up files without network dependency. Cloud service integrations extend your backup options beyond local storage, supporting popular platforms like Dropbox, Amazon S3, and Microsoft Azure.

Performance and reliability

Equipped with a powerful Annapurna Labs processor and ample DDR4 memory, the NAS maintains smooth file transfers even under heavy multi-user workloads. RAID configurations and hot-swappable bays ensure your data remains protected and accessible, reducing the risk of downtime. The built-in encryption and two-factor authentication provide robust security measures to keep sensitive information safe from unauthorized access.

Ideal uses and environments

This NAS server is well suited for creative studios managing large media files, engineering firms storing complex project data, and IT departments handling routine backups. Its combination of high capacity, fast network connectivity, and strong security features makes it a solid choice for businesses that require dependable centralized storage without relying on cloud-only solutions. The compact desktop design fits comfortably in office spaces where rack-mounted solutions are not practical.

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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