Model: WS5420RN16W5
from $2,199.99
Storage: 4 x 4TB
3 configurations available
Configuration tips
Upgrade available
8GB / 4 x 8TB from $2,599.99 (+$400)
Purpose built as efficient data storage and backup solutions for small businesses, the TeraStation WS5020 IoT 16TB 4-Bay Rackmount NAS Server from Buffalo runs on the Windows Server IoT 2025 for Storage Workgroup operating system and integrates seamlessly into Windows-based environments and Microsoft services such as Azure and OneDrive. It can act as a multi-purpose file server, a central backup hub for all your files, an NVR server for security cameras, or a subscription-free backup and disaster recovery (BDR) appliance.
Buy based on the software ecosystem (e.g. Available from $2,199.99.
NAS (Network Attached Storage) devices run 24/7, making power consumption a steady, though low, cost. The real ongoing expense is replacing hard drives as they fail or filling empty bays to expand storage.
Common Failure Modes
Hard drive failure is the most common issue, which is why NAS uses RAID redundancy to prevent data loss. Fan failures and power brick deaths are the primary hardware issues for the enclosure itself.
Buy based on the software ecosystem (e.g., Synology DSM) and the number of drive bays you need for redundancy and future expansion. CPU power matters greatly if you plan to run media servers like Plex.
The NAS enclosure itself can last a decade. However, the hard drives inside are consumable and typically need replacing every few years depending on workload.
The Buffalo TeraStation WS5020 IoT 16TB 4-Bay Rackmount NAS Server (4 x 4TB) is available at bhphoto, starting at $2,199.99.
NAS (Network Attached Storage) devices run 24/7, making power consumption a steady, though low, cost. The real ongoing expense is replacing hard drives as they fail or filling empty bays to expand storage.
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