The Buffalo Drive Station Quad is a high performance, multimedia, e SATA & USB (Universal Serial Bus) 2.0 external hard drive perfect for the home or small office that requires large amounts of storage space. The unit is a four drive; four bay RAID enabled drive with RAID 0 for performance & RAID 5 or 10 for redundant storage. The Drive Station Quad gives additional storage to quickly backup all your multimedia files. With data transfer speeds of up to 235MB/s, compatible with Windows Server 2003/2008, the Drive Station Quad quickly backs up your entire server system & database.