QNAP TS-509 Pro Turbo NAS is the new generation all-in-one NAS server for SMB and enterprises. It offers the most reliable and powerful storage solution. With superior performance, versatile server features, best-in-class RAID data protection and rock-solid hot-swappable hard drive design, the TS-509 Pro brings business nowadays a truly new experience of instant data access and sharing, a protected mass storage, value-plus server features at the lowest maintenance cost.