10 Best Nas Devices 2025 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 12RD is a powerful NAS device designed for users needing substantial storage and high performance, such as small to medium businesses or tech enthusiasts managing large amounts of data. It supports up to 12 drive bays, giving plenty of room for expanding storage, which is great if you expect to grow your data needs. The Intel Atom C3538 quad-core CPU paired with 8GB of DDR4 RAM (expandable up to 128GB) provides solid processing power for multitasking and running virtual machines or Docker apps, making it suitable for more advanced business tasks.

Connectivity is strong with two 2.5GbE ports and two 1GbE ports, which can be combined for faster network speeds up to 5 Gbps, and there's room to add a 10GbE card for even faster connections. It supports multiple RAID configurations and VMware, Citrix, and Hyper-V virtualization, adding to its versatility for business environments. Features like ACL and Active Directory support improve security and user management, which are important in professional settings.

On the downside, this is a bulky 2U rackmount device weighing over 25 pounds, so it's mainly suited for server rooms rather than casual home use. It's also diskless, so you must purchase hard drives separately, and its price and complexity may be overkill for average home users or those with simpler storage needs. The Asustor Lockerstor 12RD stands out as a robust, expandable NAS solution ideal for business users who need reliable performance, high capacity, and advanced networking features.