Buffalo TS3420DN0804

Overview

The Buffalo TS3420DN0804 is a 4-bay network-attached storage (NAS) server designed to provide small businesses with reliable and secure data access. It offers a total of 8TB storage capacity through four 2TB NAS-grade drives that can be replaced without powering down the system, ensuring continuous operation. Powered by a 1.4 GHz quad-core processor and 1GB of DDR3 RAM, this NAS handles multiple simultaneous tasks efficiently, making it suitable for environments that require fast and dependable file sharing and backup solutions.

Key features

• Hot-swappable drive bays allow for easy maintenance and upgrades without interrupting service.
• Dual Ethernet ports, including a 2.5GbE port, provide flexible and faster network connectivity options.
• Supports multiple RAID configurations (0, 1, 5, 6, 10, JBOD) to balance performance and data protection according to your needs.
• Integration with Active Directory supports user management for up to 10,000 users, simplifying access control in business environments.
• Cloud synchronization with Amazon S3, OneDrive, and Dropbox enables hybrid storage setups for added data redundancy and accessibility.
• USB 3.1 ports offer fast data transfer speeds for connecting external storage devices or backups.
• Web-based management interface allows easy configuration and monitoring from any location with network access.

Key specs

• Storage capacity: 8TB (4 x 2TB NAS-grade drives)
• Processor: 1.4 GHz quad-core
• Memory: 1GB DDR3 RAM
• Network interfaces: Dual Ethernet ports including 2.5GbE
• RAID support: 0, 1, 5, 6, 10, JBOD
• USB ports: USB 3.1
• User support: Active Directory integration for up to 10,000 users

Connectivity and compatibility

This NAS server offers versatile connectivity options to fit into various network environments. The dual Ethernet ports include a 2.5GbE interface, which provides faster data transfer speeds compared to standard Gigabit Ethernet, making it well suited for small offices with higher bandwidth demands. USB 3.1 ports enable quick connection to external drives for backups or additional storage expansion. Compatibility with popular cloud services like Amazon S3, OneDrive, and Dropbox allows seamless integration into hybrid cloud workflows.

Ideal uses and environments

The Buffalo TS3420DN0804 fits well in small business settings where continuous, secure access to shared data is critical. It supports multiple users and services simultaneously, making it a strong choice for offices that handle frequent file transfers, backups, and collaborative projects. Its RAID options and hot-swappable drives provide peace of mind for data protection and maintenance without downtime. Businesses looking to combine local storage with cloud backup will benefit from its cloud synchronization capabilities.

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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