BUFFALO TeraStation 5420 4-Bay 80TB (4x20TB) Business Rackmount NAS Storage Hard Drives Included

Powerful, secure, and built for demanding business workloads, the Buffalo TeraStation 5420 is a flagship 4-bay rackmount NAS designed to centralize storage, simplify collaboration, and protect critical data. With four 20TB drives included, it delivers a substantial 80TB raw storage pool that scales to accommodate growing file libraries, backups, multimedia assets, and shared workspaces. This rackmount NAS pairs enterprise-grade reliability with intuitive administration, making it an ideal solution for small to medium-sized businesses, departments within larger organizations, and IT teams seeking a single, centralized storage platform.

Engineered to handle continuous operation in demanding environments, the TeraStation 5420 blends high performance with robust data protection and flexible access. Its rackmount chassis fits neatly into standard 19-inch racks, offering professional-grade deployment in data centers, server rooms, or network closets. Beyond raw capacity, it supports multiple network protocols, granular user permissions, and streamlined backup workflows, empowering teams to share files securely, restore quickly, and collaborate with confidence.

• 80 TB total capacity with four 20TB hard drives included, delivered in a rugged 4-bay rackmount enclosure that centralizes company data, media libraries, backups, and project files for fast, reliable access by everyone who needs it.
• Designed to manage busy business environments with consistent performance under load, reliable 24/7 operation, and a scalable storage foundation that grows with your team and projects without compromising uptime.
• Advanced data protection through configurable RAID levels (including RAID 0, 1, 5, 6, and 10), enabling you to optimize performance and redundancy to meet your risk tolerance and service-level requirements.
• Flexible file sharing and access via common protocols—SMB/CIFS for Windows and macOS, NFS for Linux, and FTP/FTPS—paired with granular user and group permissions to support secure collaboration across departments and teams.
• Intuitive setup and ongoing administration through a web-based management interface, plus remote access options, automated backup and synchronization tasks, and energy-efficient operation designed to minimize total cost of ownership.

Technical Details of BUFFALO TeraStation 5420

• Type: 4-bay rackmount NAS with four 20TB drives pre-installed for an 80TB raw capacity; drives are included for immediate deployment and centralized storage.
• RAID support: Flexible RAID configurations (0/1/5/6/10) to balance performance, capacity, and data protection according to workload, risk tolerance, and business needs.
• Networking and protocols: Supports standard NAS file-sharing protocols including SMB/CIFS, NFS, and FTP/FTPS; suitable for mixed environments with Windows, macOS, and Linux clients.
• Security and access: Centralized administration with user and group permissions, shared folders, and access controls to enforce data governance across teams and departments.
• Reliability and form factor: Rackmount 19-inch chassis designed for continuous operation in business environments; hot-swappable drives (where supported by the model) for easier maintenance and minimal downtime.

How to Install BUFFALO TeraStation 5420

• Prepare the installation site by ensuring adequate ventilation, stable rack mounting, and appropriate cabling to minimize heat buildup and maximize airflow around the unit.
• Install the device in a standard 19-inch server rack or place it in a secure equipment closet; confirm that the four 20TB drives are properly seated and recognized by the chassis.
• Connect the NAS to your network using the appropriate Ethernet interfaces and plug in the power supply; power-on self-test will begin as the system boots.
• Access the built-in setup wizard through a web browser using the default IP address or hostname provided in the quick start guide; configure the desired RAID level, admin credentials, and initial shared folders.
• Set up user accounts, group permissions, and security policies; configure backup tasks, remote access, and monitoring alerts to ensure ongoing data protection and streamlined administration.

Frequently asked questions

• What is included with the Buffalo TeraStation 5420?
• The 5420 comes as a complete package with a 4-bay rackmount chassis, four 20TB hard drives installed for an 80TB total capacity, power supply, rack ears, mounting hardware, and a quick start guide to help you get up and running quickly in a business environment.
• Which RAID levels are available?
• The NAS supports multiple RAID configurations, including RAID 0, 1, 5, 6, and 10, allowing you to tailor data protection, performance, and usable capacity to your organization's specific workloads and risk tolerance.
• What protocols does it support for file access?
• It supports SMB/CIFS for Windows and macOS, NFS for Linux, and FTP/FTPS, enabling seamless cross-platform file sharing and integration with existing IT infrastructure and workflows.
• Can I access my data remotely?
• Yes. The TeraStation 5420 includes features for remote access and secure cloud backup integration, enabling authorized users to retrieve files and manage backups from outside your local network when configured with appropriate security settings.
• Is it suitable for 24/7 business use?
• Absolutely. Built for continuous operation, the 5420 provides centralized storage for teams, dependable data backups, and a scalable platform that supports growing workloads and evolving business needs.
• What maintenance or expansion options exist if I outgrow 80TB?
• Buffalo NAS systems are designed with flexibility in mind; you can expand storage capacity by adding additional compatible Buffalo NAS units or by using expansion options supported by your network design and licensing. Check product documentation for compatible configurations and upgrade paths.
• What management features help with data protection?
• Administrative features include granular user permissions, shared folder controls, scheduled backups, and monitoring tools within the web interface; these features help enforce data governance, protect against data loss, and simplify IT administration for teams and departments.