10 Best Nas Devices 2026 in the United States

The Synology DS1522+ is a solid choice for anyone needing a mid-sized NAS device with good flexibility. It comes with 5 bays, allowing you to install multiple hard drives, and the included bundle offers 20TB total storage using five 4TB Seagate IronWolf drives, which are designed for reliable NAS use. Powered by an AMD Ryzen R1600 processor and 8GB of RAM, this NAS can handle more demanding tasks and support several users accessing files at the same time without slowing down. It supports RAID configurations, which means you can protect your data by spreading it across drives in ways that keep it safe if one drive fails.

Connectivity is strong with four Gigabit Ethernet ports (RJ-45 1GbE), providing fast and stable network access, which is important if multiple devices are connected or if you’re moving large files. Synology’s software enhances the experience by offering private cloud features, letting you sync and access your data remotely with ease, while also including built-in security measures to keep your files safe. The device’s metal build gives it a sturdy feel, though it weighs around 15.7 pounds, which is normal for this type of equipment.

One minor point is the 5400 RPM hard drives, which are quieter and cooler but not as fast as 7200 RPM models, so transfer speeds might be slightly slower for very heavy workloads. This NAS is best suited for small to medium businesses or tech-savvy home users who want a dependable, expandable storage solution with strong data protection and remote access features.

The BUFFALO TeraStation 5820DN is a strong choice for businesses needing reliable, large-scale data storage. It comes with 8 bays and 4 pre-installed 20TB hard drives, offering a total of 80TB raw space. With RAID 5 configured by default, you get around 54TB usable storage that balances speed and protection, and you can switch to RAID 6 for even better redundancy or RAID 0 for maximum capacity without protection. The device includes built-in 256-bit encryption and two-factor authentication, making it a secure option for sensitive data. It supports snapshot backups that help you recover files quickly without interrupting work, which is handy against ransomware threats.

Connectivity is excellent with a native 10GbE port, meaning fast data transfers without needing extra hardware upgrades. The NAS is compatible with Windows, Mac, and Linux, and integrates with popular cloud services like Dropbox and Microsoft Azure for added backup flexibility. It runs on a stable, business-focused system designed to handle heavy workloads smoothly. The device is relatively large and weighs nearly 24 pounds, so it’s best suited for a fixed office setup rather than portable use.

This NAS is ideal for medium to large businesses needing secure, high-capacity storage with fast network access and robust backup options. It includes a solid 3-year warranty with optional extensions and 24/7 support, providing added peace of mind.

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.