Buffalo TeraStation 5420DN 80TB 4-Bay Desktop NAS Server

Overview

The Buffalo TS5420DN8004 is a four-bay desktop network-attached storage (NAS) server designed to provide small and mid-sized offices with a reliable solution for storing, sharing, and protecting large volumes of data. Equipped with four pre-installed 20TB drives, it offers a total raw capacity of 80TB. Powered by an Annapurna Labs AL524 processor and 8GB of DDR4 memory, it ensures smooth data transfers even when multiple users access the system simultaneously. Its combination of high-speed networking and robust security features makes it well suited for demanding workflows such as 4K video editing, virtualization, and centralized backup.

Key features

• Four hot-swappable drive bays allow for easy replacement of drives without downtime, maintaining continuous access for users.
• Dual 10-Gigabit Ethernet ports deliver high-bandwidth connectivity for intensive tasks, while two 1-Gigabit ports ensure compatibility with existing network infrastructure.
• Supports multiple RAID configurations (0, 1, 5, 6, 10) and JBOD, enabling flexible choices between performance, capacity, and data redundancy.
• Hardware-based 256-bit AES encryption safeguards sensitive data, complemented by optional two-factor authentication for enhanced security.
• Integration with popular cloud services like Dropbox, Amazon S3, and Microsoft Azure facilitates off-site backups and disaster recovery strategies.
• Certified compatibility with VMware and Microsoft Hyper-V allows seamless use as shared storage or backup targets in virtualized environments.

Key specs

• Storage capacity: 80TB (four 20TB drives pre-installed)
• Processor: Annapurna Labs AL524
• Memory: 8GB DDR4
• Network interfaces: 2 x 10-Gigabit Ethernet, 2 x 1-Gigabit Ethernet
• RAID support: 0, 1, 5, 6, 10, JBOD
• Encryption: Hardware-based 256-bit AES
• Drive bays: 4 hot-swappable

Connectivity and compatibility

This NAS server offers versatile networking options to fit into various office environments. The two 10-Gigabit Ethernet ports provide the bandwidth needed for data-intensive applications like video editing and virtualization, while the two 1-Gigabit ports maintain compatibility with standard network equipment. Its certification for VMware and Microsoft Hyper-V ensures smooth integration with popular virtualization platforms, making it a practical choice for IT administrators managing virtual machine storage and backups.

Ideal uses and environments

The TS5420DN8004 is a strong choice for creative studios handling large media files, branch offices requiring reliable on-premises backup solutions, and small to mid-sized businesses that need centralized, secure storage accessible by multiple users. Its combination of high capacity, fast networking, and robust security features supports workflows that demand both speed and data protection. Teams working with 4K video, virtualization, or large archives will find this NAS server fits well into their infrastructure.