10 Best Nas Servers 2025 in the United States

The BUFFALO TeraStation 5820DN is a solid choice for businesses needing a large and reliable network storage solution. It comes with 8 bays, each preloaded with 20TB NAS-grade hard drives, giving you a massive raw capacity of 160TB. Configured in RAID 6 out of the box, it offers about 120TB of usable space with good data protection, which is ideal for critical business data. The device supports RAID configurations, allowing flexibility depending on your needs for speed or redundancy.

Its hardware is designed for stability and security, featuring a closed system with 256-bit encryption and two-factor authentication to protect sensitive files. The built-in snapshot feature helps with quick backups and recovery, which is useful in preventing data loss from accidental deletion or ransomware attacks. Another standout is the native 10GbE Ethernet port that supports very fast file transfers without needing additional hardware upgrades, beneficial for environments with heavy data traffic.

In terms of compatibility, it works well across Windows, Mac, and Linux systems, making it versatile in mixed-OS offices. Cloud integration with services like Dropbox and Amazon S3 enables hybrid backup strategies for extra data safety. The unit is fairly large and weighs about 31.5 pounds, and while power consumption and noise levels aren’t explicitly detailed, business NAS devices like this typically balance performance with reasonable energy use and quiet operation. The 5600 RPM hard drives are optimized for NAS use but might be slower than higher RPM drives for some intensive tasks. If you need a high-capacity, secure, and business-focused NAS with strong data protection and fast network connectivity, the TeraStation 5820DN is a dependable option best suited for medium to large businesses looking for a robust desktop NAS without having to separately buy drives.

The WD My Cloud 24TB EX2 Ultra is a solid choice for a centralized storage solution primarily suited for home or small office use. It offers a large storage capacity of 24TB across two bays, allowing you to install two drives with RAID options for data protection and improved performance. The 1.3 GHz dual-core processor paired with 1GB of DDR3 memory helps reduce lag during streaming and multitasking, which is beneficial for media sharing and file backups.

Its USB 3.0 connectivity supports fast data transfers, although it lacks more modern ports like USB-C or multiple Ethernet ports, which might limit advanced networking setups. WD’s software makes file syncing and sharing straightforward, even for users who aren’t very tech-savvy, and you can access your files remotely.

This device was released in 2020 and has only 1GB of RAM, which may struggle under heavy multitasking or very large file operations compared to newer NAS models. It is a user-friendly and reliable option for those needing easy-to-manage network storage with large capacity but might not be the best fit for professional users requiring top-tier performance or extensive connectivity options.

The BUFFALO TeraStation 3420RN is a robust rackmount NAS server with a substantial storage capacity of 64TB, making it ideal for small to medium-sized businesses. It comes with four pre-tested NAS-grade hard drives, configured in RAID 5 for better data redundancy and usability. Users can also switch to RAID 6 for added protection or RAID 0 for full capacity usage. With four bays, it offers flexibility in storage management and expansion. The 2.5GbE port enables fast data transfers, reducing latency without needing any cable upgrades, which is a notable advantage for businesses requiring efficient data handling.

The pre-configured RAID 1 setup ensures out-of-the-box protection, saving setup time and effort. It supports iSCSI for server storage expansion, enhancing its versatility as a network-attached storage solution. Data security is a priority with its 256-bit drive encryption and closed system architecture, along with flexible replication and backup features. The integration with major cloud services like Amazon S3, Dropbox, Azure, and OneDrive allows for a hybrid cloud setup, offering additional scalability and security benefits.

The NAS is built with reliability in mind, being made in Japan and coming with a three-year warranty that includes hard drive coverage. Remote management capabilities and a data recovery service provide additional peace of mind and operational efficiency. However, at nearly 29 pounds, it is quite heavy and may require a sturdy rackmount setup. Additionally, the hard drive speed of 5400 RPM is relatively slower compared to other high-end NAS devices, possibly affecting performance under heavy loads. The BUFFALO TeraStation 3420RN is particularly suited for SMBs looking for reliable, secure, and flexible storage.