The Buffalo DriveStation Duo is a high performance, multimedia, eSATA & USB 2.0 external hard drive perfect for the home or small office that requires large amounts of storage space. The unit is a two drive; two bay RAID enabled drive with RAID 0 for performance and RAID 1 for redundant storage. The DriveStation Duo gives additional storage to quickly backup all your multimedia files. With data transfer speeds of up to 225MB/s, compatible with Windows Server 2003/2008 and available with NovaStor NovaBACKUP Business Essential backup software, the DriveStation Duo quickly backs up your entire server system and database. The DriveStation Duo comes complete with the Buffalo Tools suite of complimentary software that offers enhancements such as TurboPC and TurboCopy to improve the file transfer and copy performance of the drives. The DriveStation Duo features the capacity, redundancy and performance required for any demanding user, the perfect solution for backing up large servers or multimedia files.