The Rhino Atrium NAS is the product of our years of research and development of extremely rugged servers. Utilizing the OpenFiler open-source NAS software, and coupled with Rhino's trademark easy-to-use and informative front LCD panel, the Rhino NAS is the perfect complement to any IT department or small office. Designed to be as feature full as it is powerful, the Rhino Atrium NAS can serve files at gigabit speeds and serve as many users as you can throw at it. The Rhino Atrium NAS can even be coupled with a second unit for backups and mirroring. The Rhino Atrium NAS Green Edition uses Western Digital's high-efficiency, ultra-power saving "Green" drives. These drives offer the best combination of speed while maximizing power efficiency by dynamically throttling disk speed and spindown period.