Maintain dependable file services for teams that cannot afford storage downtime. The Buffalo TeraStation 5420DN delivers 16 TB of partially populated capacity with 2 x 8 TB NAS HDDs, giving you a practical starting point for shared storage, backups, and departmental data. Its 10GbE connectivity helps keep throughput high when multiple users are active, while RAID support adds the resilience expected in business storage. This model is built for environments that need more than basic file sharing. iSCSI support expands deployment options for block-level workloads, and the TAA-compliant design makes it suitable for public sector and regulated procurement paths. Because the system is partially populated, it gives IT teams a faster path to deployment without committing to a fully filled chassis on day one. For organizations comparing entry enterprise NAS options, the 5420DN stands out by combining capacity, network speed, and data protection in a compact platform. It is a sensible fit when you need a storage appliance that can serve users reliably, support backup targets, and scale within a controlled budget.