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BUFFALO TeraStation 5420DN Review

  • NAS
  • 12 min read
network storage for businesses

The BUFFALO TeraStation 5420DN is a powerful NAS solution that prioritizes data security with 256-bit encryption and two-factor authentication, ideal for professional environments. Equipped with a native 10GbE port and a dual-core processor, it guarantees rapid data transfers and efficient backup operations. Offering robust disaster recovery options and versatile backup strategies, it secures data integrity and accessibility. While excelling in performance and providing reliable storage solutions, users may face some limitations with heavy workloads and network complexity. This review provides a glimpse into the features, benefits, and performance of the BUFFALO TeraStation 5420DN.

Key Takeaways

  • Robust data protection with 256-bit encryption and two-factor authentication.
  • Native 10GbE port for high-speed data transfers and network performance.
  • Dual-core processor for efficient data processing and backup functionality.
  • Versatile backup strategies including snapshot technology for instant recovery.
  • Stable system with seamless user experience, advanced security features, and competitive pricing.

The BUFFALO TeraStation 5420DN offers a wide range of features tailored for professional network-attached storage needs, ensuring robust data protection and seamless integration capabilities. When considering its performance, the TeraStation 5420DN stands out with its native 10GbE port, enabling fast data transfers compared to traditional Gigabit Ethernet connections. User experience feedback highlights the TeraStation's intuitive interface and reliable data backup functionalities, including snapshots for instant recovery. In a performance comparison with other NAS devices in its class, users have reported higher satisfaction levels with the TeraStation 5420DN's speed and reliability. This positive user feedback underlines the TeraStation's effectiveness in meeting professional storage requirements while providing a user-friendly experience.

Features and Benefits

The BUFFALO TeraStation 5420DN provides robust data protection features including 256-bit drive encryption and two-factor authentication. With a native 10GbE port, fast data transfers are facilitated, enhancing overall performance. Additionally, the dual-core processor guarantees efficient data backup functionality, making it an ideal choice for professional network-attached storage solutions.

Data Protection With Encryption

Enhancing data security through robust encryption mechanisms provides users with a crucial shield against unauthorized access and data breaches. The BUFFALO TeraStation 5420DN offers 256-bit data encryption, ensuring that sensitive information remains secure. This essential security measure plays a crucial role in safeguarding data integrity and confidentiality, meeting the stringent security requirements of modern businesses. By implementing such security measures, users can have peace of mind knowing that their data is protected from potential threats and cyberattacks. In addition to encryption, the device also features two-factor authentication, adding an extra layer of security to prevent unauthorized access. These security measures make the TeraStation 5420DN a reliable and secure solution for storing and managing critical data.

0GbE Native Port

Implementing a native 10GbE port in the BUFFALO TeraStation 5420DN enhances data transfer speeds to a great extent, catering to the demands of high-performance network environments. This feature greatly boosts network performance by allowing for faster and more efficient data transfers between the storage device and connected systems. The 10GbE port guarantees that large files and data-intensive applications can be accessed and transferred rapidly, enhancing overall workflow efficiency. Additionally, the native 10GbE port contributes to robust storage security by providing a high-speed, dedicated connection that minimizes the risk of data breaches and unauthorized access. This feature is particularly beneficial for businesses seeking to optimize their network infrastructure for both performance and storage security.

Dual-Core Processor for Performance

The introduction of a dual-core processor in the BUFFALO TeraStation 5420DN elevates its performance capabilities, aligning with the device's focus on enhancing network efficiency and speed. This essential processor technology plays a vital role in performance optimization by allowing the NAS to handle multiple tasks simultaneously with improved speed and responsiveness. The dual-core architecture enables efficient data processing, enhancing overall system performance and reducing latency during data transfers. By harnessing the power of a dual-core processor, the TeraStation 5420DN can efficiently manage data-intensive operations, ensuring smooth and reliable network performance for users. This enhancement underscores BUFFALO's commitment to delivering high-performance storage solutions tailored for modern networking environments.

Enhanced Data Backup Functionality

Within the domain of data management, the TeraStation 5420DN boasts an array of advanced features designed to elevate its data backup functionality. The device offers versatile backup strategies, including scheduled backups, real-time replication, and snapshot technology, allowing users to tailor their data protection methods to suit their specific needs. In the event of a disaster, the TeraStation 5420DN guarantees robust disaster recovery capabilities, enabling swift restoration of critical data to minimize downtime. With 256-bit drive encryption and two-factor authentication, data integrity is prioritized, enhancing security measures during backup processes. These features collectively contribute to a complete data backup solution, ensuring data availability and integrity in various scenarios.

Product Quality

Exemplifying exceptional craftsmanship and reliability, the BUFFALO TeraStation 5420DN sets a high standard for network-attached storage solutions. Its product durability is outstanding, ensuring long-term performance and protection for valuable data. Customer satisfaction is prioritized through the incorporation of advanced hardware and firmware that enhance stability and security. With features like 256-bit drive encryption, two-factor authentication, and snapshots for instant data backup and recovery, users can trust in the TeraStation 5420DN to safeguard their information effectively. The native 10GbE port enables fast data transfers, further underlining the product's quality and efficiency. BUFFALO's commitment to quality is evident in the TeraStation 5420DN, providing users with a reliable and durable network-attached storage solution that exceeds expectations.

What It's Used For

The BUFFALO TeraStation 5420DN is primarily utilized for robust data backup solutions, offering advanced features such as snapshots for instant data backup and recovery, and 256-bit drive encryption for enhanced security. Additionally, its cloud storage integration capabilities allow for seamless hybrid cloud setups with popular services like Dropbox, Amazon S3, and Microsoft Azure. These functionalities make the TeraStation 5420DN a versatile network-attached storage solution suitable for businesses and professionals requiring reliable data protection and storage efficiency.

Data Backup Solutions

Data Backup Solutions are essential tools for safeguarding critical data against loss or corruption, providing users with a reliable method to protect and recover valuable information. In the context of the BUFFALO TeraStation 5420DN, the device offers advanced features for data backup solutions. It supports data recovery through snapshots, allowing users to instantly restore previous versions of files or folders. Additionally, the TeraStation 5420DN enables users to implement various backup strategies, such as scheduled backups or real-time replication, ensuring that data is continuously protected. These backup strategies are vital for maintaining data integrity and availability, especially in scenarios where data loss can have significant consequences. The TeraStation 5420DN's robust backup capabilities contribute to a thorough data protection strategy for users.

Security Features Overview

Incorporating robust security features, the BUFFALO TeraStation 5420DN serves as a complete solution for safeguarding sensitive data and preventing unauthorized access. With 256-bit drive encryption and two-factor authentication, this network-attached storage device guarantees data protection at the highest level. Additionally, the TeraStation 5420DN offers performance enhancements through features like snapshots for instant data backup and recovery, enabling seamless operations and minimizing downtime. The device's advanced hardware and firmware contribute to its stability and security, providing users with peace of mind regarding their critical data. Furthermore, the inclusion of a native 10GbE port facilitates fast data transfers, enhancing overall system efficiency. These security features and performance enhancements make the BUFFALO TeraStation 5420DN a reliable choice for businesses and individuals seeking top-tier data protection and storage solutions.

Cloud Storage Integration

Cloud storage integration in the BUFFALO TeraStation 5420DN facilitates seamless data synchronization and accessibility across hybrid cloud environments. The integration allows users to leverage popular cloud storage services such as Dropbox, Amazon S3, and Microsoft Azure, enhancing data mobility and flexibility. By utilizing cloud storage benefits like scalability, cost-efficiency, and remote access, businesses can optimize their data management strategies. However, integration challenges such as ensuring data security, managing multiple cloud accounts, and dealing with potential compatibility issues may arise. Despite these challenges, the TeraStation 5420DN's cloud integration feature streamlines data workflows, enabling efficient collaboration and backup processes within hybrid cloud setups.

Product Specifications

The BUFFALO TeraStation 5420DN, with product dimensions of 14.1 x 12.2 x 14.3 inches and an item weight of 17.26 pounds, offers a robust and compact network-attached storage solution. Below is a detailed specification table for the TeraStation 5420DN:

Item Model NumberTS5420DN1604
Best Sellers Rank#251 in NAS Devices
Date First AvailableDecember 27, 2022

This table provides essential information for those considering the BUFFALO TeraStation 5420DN. For further details on performance benchmarking or setup tutorial, please refer to the user manual or online resources provided by BUFFALO.

Who Needs This

For individuals seeking a reliable and secure network-attached storage solution with advanced data protection features, the BUFFALO TeraStation 5420DN offers a robust and compact option. The target audience for this NAS device includes small to medium-sized businesses, remote offices, creative professionals, and tech-savvy home users who prioritize data security, backup efficiency, and fast data transfers. With the increasing demand for secure data storage solutions in today's digital landscape, the market demand for NAS devices like the TeraStation 5420DN is high. Businesses and individuals looking to enhance their data management practices, safeguard data integrity, and streamline file sharing processes will find the TeraStation 5420DN to be a valuable asset that meets their storage needs effectively.


One of the standout features of the BUFFALO TeraStation 5420DN is its robust hardware and firmware, designed to guarantee stability and security in professional network-attached storage environments. When considering the pros of this NAS device, the following points stand out:

  1. Performance Comparison: The BUFFALO TeraStation 5420DN excels in performance when compared to similar NAS devices in its class, offering faster data transfers and smoother operations.
  2. Storage Capacity: With ample storage capacity options available, ranging up to 32TB, this NAS device provides the flexibility to meet the varying data storage needs of businesses effectively.
  3. Reliability: The advanced hardware and firmware components provide a dependable and secure storage solution, enhancing data protection and accessibility for users.


Despite its impressive performance and reliability, the BUFFALO TeraStation 5420DN does have some limitations that users should be aware of. When considering this NAS device, users should take into account the following cons:

  1. Performance issues: Some users have reported that under heavy workloads, the TeraStation 5420DN may experience a decrease in performance, affecting data transfer speeds and overall efficiency.
  2. Compatibility concerns: While the TeraStation 5420DN is compatible with various operating systems and devices, some users have faced challenges when integrating it into complex network environments or when attempting to utilize specific software applications.
  3. Limited customization options: Users looking for extensive customization and advanced features may find the TeraStation 5420DN's options somewhat limited compared to other NAS solutions on the market.

What Customers Are Saying

In customer feedback regarding the BUFFALO TeraStation 5420DN, a prevalent theme emerges highlighting the device's robust security features and data protection capabilities. Customer testimonials consistently praise the advanced hardware and firmware that contribute to the device's stability and security measures. Users have reported positive user experiences with the 256-bit drive encryption and two-factor authentication, emphasizing the product's purpose-built design for data protection. Additionally, customers have lauded the snapshots feature for enabling instant data backup and recovery, further enhancing the overall security of the device. The native 10GbE port has also been well-received for facilitating fast data transfers. Overall, user feedback underscores the BUFFALO TeraStation 5420DN's reputation for providing excellent security and data protection solutions.

Overall Value

Building upon the positive customer feedback regarding the BUFFALO TeraStation 5420DN's robust security features and data protection capabilities, a critical evaluation of its overall value reveals its inclusive blend of advanced hardware, innovative firmware, and purpose-built design for enhancing network-attached storage solutions. The performance comparison showcases the TeraStation 5420DN's exceptional data transfer speeds facilitated by its native 10GbE port, ensuring efficient operations for businesses with high data demands. Additionally, the 256-bit drive encryption and two-factor authentication contribute greatly to its data protection capabilities, enhancing overall security. When considering the price point in relation to the feature set and performance, the TeraStation 5420DN offers a compelling overall value proposition for businesses seeking reliable and secure network-attached storage solutions.

Tips and Tricks For Best Results

For peak performance and efficiency when utilizing the BUFFALO TeraStation 5420DN, implementing strategic operational methodologies and system configurations is crucial. To guarantee the best settings, it is advisable to regularly update the firmware to the latest version provided by BUFFALO. Utilizing the 10GbE port for fast data transfers can greatly enhance productivity. Enabling 256-bit drive encryption and two-factor authentication improves data protection. In case of any issues, employing troubleshooting techniques such as reviewing system logs, checking network connectivity, and verifying drive health can help identify and resolve problems effectively. By following these tips and tricks, users can maximize the capabilities of the TeraStation 5420DN and maintain a reliable and secure network-attached storage solution.


Wrapping up our evaluation of the BUFFALO TeraStation 5420DN, what overarching benefits does this network-attached storage solution offer to users seeking robust data protection and efficient storage management? When it comes to performance analysis, the TeraStation 5420DN excels with fast data transfers facilitated by a native 10GbE port and snapshot capabilities for instant data backup and recovery. Users can expect a seamless user experience with advanced hardware and firmware ensuring stability and security. When looking at price comparison, the TeraStation 5420DN provides competitive pricing for the features offered, making it a cost-effective solution. Additionally, BUFFALO's customer support, including a 3-year warranty with optional extensions and 24/7 US-based support, enhances the overall value proposition for users investing in this NAS device.

Frequently Asked Questions

Is the 10GBE Port Upgradeable to Higher Speeds?

Is the 10GbE port on the BUFFALO TeraStation 5420DN upgradeable for higher speeds? Ethernet compatibility is essential for network performance. Future-proofing upgrades may be possible by checking manufacturer specifications or consulting with technical support for possible speed enhancements.

Can the NAS Be Used for Multimedia Streaming?

The NAS is designed for multimedia compatibility, supporting seamless multimedia streaming. Its advanced features guarantee high-quality streaming performance, making it suitable for various media applications. The device offers a reliable solution for efficient multimedia storage and playback.

Does the Device Support Third-Party Apps?

The device supports third-party apps, enhancing user customization. App compatibility allows for expanded functionality and tailored usage. This feature enables users to optimize their experience by integrating additional software solutions to meet specific needs.

How Many Users Can Access the NAS Simultaneously?

User management and access control on the NAS facilitate multiple users to simultaneously access the system, enhancing network performance and scalability. Robust user authentication mechanisms guarantee secure and efficient data handling for seamless operations.

Is the NAS Compatible With Mac and Windows Systems?

Like a symphony that harmonizes Mac and Windows systems, the NAS boasts compatibility parity. Unifying file sharing through its versatile interface, it transcends network requirements with seamless integration, bridging interface differences effortlessly.

Disclosure: As an Amazon Associate, I earn from qualifying purchases.

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