10 Best Nas Devices 2026 in the United States

The Asustor Lockerstor 10 AS6510T is a strong choice for users who need a high-capacity NAS with 10 drive bays, allowing up to 180TB of storage using SATA SSDs or HDDs. Its Intel Atom quad-core 2.1 GHz processor combined with 8GB DDR4 RAM (expandable to 64GB) offers solid performance for demanding tasks, making it suitable for small businesses or power users who manage large amounts of data. The inclusion of two M.2 NVMe SSD slots helps boost speed by providing fast cache options, which can significantly improve responsiveness.

Connectivity is a highlight, with dual 10GbE and 2.5GbE ports enabling very fast network speeds—up to 20 Gbps on the 10GbE ports or 5 Gbps on the 2.5GbE ports—ideal if you have a compatible high-speed network setup. This makes file transfers and streaming smoother, especially in a multi-user environment. The device supports RAID configurations, which help protect your data by spreading it across drives or creating backups.

Made from metal, it has a sturdy build and a compact footprint for a 10-bay NAS. The 3-year warranty adds peace of mind. However, the device is diskless, so you’ll need to purchase hard drives separately, which adds to the initial cost. Given its hardware, power consumption might be higher than smaller NAS models, which is worth considering if energy use is a priority. This NAS fits users who require large storage capacity, fast network connections, and strong performance for business or heavy personal use. It offers speed, expandability, and reliability for those needs.

The BUFFALO TeraStation 3420DN is a solid choice for small to medium businesses needing reliable network-attached storage with good data protection. It offers 16TB total capacity spread over four 4TB NAS-grade hard drives, using RAID 5 by default to provide about 12TB of usable storage with fault tolerance. You can also switch to RAID 6 for extra redundancy or RAID 0 for maximum space but less protection. Its 4-bay design is flexible enough for typical office storage needs. The device supports iSCSI, making it suitable for expanding server storage, and includes native 2.5GbE Ethernet for faster network transfers without needing cable upgrades. Security features like 256-bit drive encryption and a closed system add peace of mind for sensitive data. It also integrates with popular cloud services like Amazon S3 and Dropbox, which can be handy for hybrid backup solutions.

Setup is straightforward, with RAID 1 pre-configured for quick protection out of the box. The TeraStation is backed by a 3-year warranty including hard drive coverage, and US-based support is available around the clock. Although it may not be the most power-efficient model compared to newer NAS units, given its weight and older design, it’s built in Japan for quality assurance. This NAS is best suited for businesses needing dependable, secure storage with easy management rather than advanced home media features.

The Asustor Lockerstor 10 Gen3 AS6810T is a powerful 10-bay NAS device designed for users who need large storage capacity and high performance, such as small businesses or advanced home users with heavy data demands. Its AMD Ryzen quad-core processor paired with 16GB DDR5 ECC RAM offers solid speed and reliability, making it well-suited for multitasking and handling multiple users simultaneously. The inclusion of four M.2 NVMe slots allows for very fast storage caching, which can significantly improve data access speeds.

Connectivity options are impressive, featuring two 10GbE and two 5GbE Ethernet ports, plus USB4 Type-C and USB 3.2 ports. This wide range of fast connections supports high-speed networking and direct device link-ups, although USB4 currently supports only specific external storage or NAS-to-NAS connections. The device supports Wake on LAN/WAN, which helps save power by allowing remote startup.

While the unit is diskless, meaning you need to provide your own drives, it supports flexible RAID setups for data protection and performance optimization. The rack-mount design is great for server rooms but might be bulky for casual home use. This NAS stands out for its excellent processing power, fast RAM, ample bays, and versatile connectivity, making it a strong choice for professional or power users focused on speed and expandability. However, its complexity and rack-mount form factor may be less ideal for casual or beginner users looking for a plug-and-play experience.