Buffalo TeraStation 3420 Partially Populated 4TB 4-Bay NAS Server (2 x 2TB)

The Buffalo TS3420DN0402 is a four-bay network attached storage server that arrives with two pre-installed 2 TB NAS-grade drives, giving you 4 TB of capacity right out of the box and two open bays for future expansion. Designed for continuous operation, it provides a dependable hub for files, backups, and multimedia in small offices, creative studios, or branch locations that need around-the-clock access to their data.

A 1.4 GHz quad-core processor paired with 1 GB of DDR3 memory keeps daily tasks moving smoothly, whether multiple team members are editing documents, streaming large media files, or scheduling automated backups. Dual Ethernet ports—one Gigabit and one 2.5 Gigabit—let you match existing network hardware today and step up to faster infrastructure later without replacing the NAS.

Data protection is flexible. Choose from RAID 0, 1, 5, 6, or 10, or use JBOD if you prefer to manage each disk separately. The hot-swappable drive bays make it easy to replace or add drives without shutting the system down, so important projects stay online while maintenance happens in the background.

The server works with common file-sharing protocols and integrates with popular cloud services such as Dropbox and Amazon S3, making hybrid backup strategies straightforward. A closed operating system and AES-256 encryption help guard sensitive information against unauthorized access, giving peace of mind when handling client records or intellectual property.

Buffalo backs the device with a three-year warranty, 24 7 U.S.-based support, and data recovery service. For the office manager who wants simple centralized storage, the IT administrator who needs reliable backups, or the content creator sharing large video files with a team, this NAS offers a practical blend of capacity, expandability, and protection.

• 4 TB total storage from two factory-installed 2 TB NAS-grade hard drives
• Four-bay chassis leaves room for two additional drives as needs grow
• Supports RAID 0, 1, 5, 6, 10, and JBOD for customizable data protection
• Dual Ethernet ports: one Gigabit and one 2.5 Gigabit for flexible network speeds
• Hot-swappable drive bays allow maintenance without downtime
• 1.4 GHz quad-core processor and 1 GB DDR3 memory for responsive operation
• Cloud integration with services such as Dropbox and Amazon S3 for hybrid backup
• Closed operating system and AES-256 encryption enhance security
• Three-year warranty with 24 7 U.S.-based support and data recovery service