Keep shared data available, organized, and protected with the Buffalo TeraStation 5420DN 16TB NAS. This 4-bay system ships with 4 x 4 TB drives and is designed for teams that need centralized storage with straightforward administration and strong data availability. Its 10 GbE connectivity helps reduce bottlenecks when multiple users access large files, while RAID support adds the resilience expected in business environments. Built for practical deployment, the 5420DN also supports iSCSI, giving IT teams flexibility for block-level storage use cases alongside standard file sharing. That makes it a strong fit for backup targets, departmental file repositories, and shared project storage where uptime and recoverability matter more than consumer-grade simplicity. TAA compliance further positions it for procurement environments that require sourcing discipline. For organizations replacing ad hoc storage or aging file servers, this model offers a cleaner path to controlled capacity, predictable access, and easier day-to-day management. It is the kind of NAS you choose when the data matters, the users are active, and the cost of downtime is real.