Disk Station DS508 Ultra-high-speed, 5-bay NAS Server with Hot-swappable HDD design, 2 Gigabit LAN ports and Windows ADS Authentication for Small Businesses and Corporations. DS508 is designed to serve continual data access for corporate users. The hot swappable hard drives are easily replaceable when hard drive failure occurs. Data is available 24/7. DS508 provides ultra-speedy data transmission and powerful computing capability, which is not only suitable for corporate environments that demand efficiency, but also a great choice for power users who massively access data on the server.