Buffalo TS3420RN0402

Overview

The Buffalo TS3420RN0402 is a network-attached storage (NAS) server designed to deliver secure and reliable storage for small to medium-sized businesses or advanced home users. It comes partially populated with two 2TB NAS-grade drives configured in RAID 1, providing 4TB of total storage with built-in redundancy to protect your data from drive failure. Powered by a 1.4 GHz quad-core processor and 1GB of DDR3 memory, it handles multitasking efficiently, making it suitable for backup, file sharing, and storage expansion through iSCSI support.

This 1U rackmount unit features hot-swappable drive bays that allow you to replace drives without downtime, ensuring continuous operation. It integrates smoothly into existing networks with Active Directory support for managing up to 10,000 users and groups, and connects to popular cloud services like Amazon S3, OneDrive, Dropbox, and Microsoft Azure for flexible backup and synchronization options. Remote management tools simplify administration across multiple devices, while a three-year warranty and 24/7 North American support provide added peace of mind.

Key features

• Pre-configured RAID 1 with two 2TB NAS-grade drives for data protection and 4TB usable storage
• 1.4 GHz quad-core processor and 1GB DDR3 memory to support smooth multitasking and efficient data handling
• Hot-swappable drive bays enable drive replacement without interrupting server operation
• Supports multiple RAID modes including 0, 1, 5, 6, 10, and JBOD for flexible storage configurations
• Dual Ethernet ports with 1 Gigabit and 2.5 Gigabit speeds for fast and reliable network connectivity
• Three USB 3.1 Gen 1 ports provide easy connection to external devices and backups
• Compatible with major cloud services such as Amazon S3, OneDrive, Dropbox, and Microsoft Azure for seamless data synchronization and backup
• Active Directory integration supports management of up to 10,000 users and groups, simplifying user access control
• Remote management capabilities allow centralized monitoring and control of multiple NAS devices
• Durable design backed by a three-year warranty and 24/7 North American-based technical support

Key specs

• Storage capacity: 4TB (2 x 2TB NAS-grade drives)
• Processor: 1.4 GHz quad-core
• Memory: 1GB DDR3
• RAID support: 0, 1, 5, 6, 10, JBOD
• Network interfaces: 1 x 1 Gigabit Ethernet, 1 x 2.5 Gigabit Ethernet
• USB ports: 3 x USB 3.1 Gen 1
• Form factor: 1U rackmount
• Warranty: 3 years with 24/7 North American support

Connectivity and compatibility

This NAS server offers versatile connectivity options to fit into various network environments. The dual Ethernet ports include a standard 1 Gigabit and a faster 2.5 Gigabit port, allowing you to optimize network speed and reliability based on your infrastructure. The three USB 3.1 Gen 1 ports support quick connection to external drives or peripherals, enhancing backup and data transfer flexibility.

Integration with Active Directory enables centralized user and group management, making it easier to control access in business environments. Compatibility with cloud platforms such as Amazon S3, OneDrive, Dropbox, and Microsoft Azure expands your backup and synchronization options beyond local storage, supporting hybrid cloud workflows.

Ideal uses and environments

The Buffalo TS3420RN0402 fits well in small to medium-sized business settings or advanced home offices that require dependable, always-on storage with data protection. Its rackmount design suits server rooms or IT closets where space efficiency is important. The combination of RAID 1 redundancy, hot-swappable drives, and remote management makes it a strong choice for environments where minimizing downtime and simplifying administration are priorities.

This NAS is also suitable for users who need to back up and share files across multiple devices securely, or who want to integrate local storage with cloud services for added flexibility. Its performance and features support workflows involving frequent data access, backup tasks, and multi-user collaboration.

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.

Learn more

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.

Learn more

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.

Learn more