The buffalo drivestation duo usb 30 is a high performance multimedia 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 the drivestation duo usb 30 features the capacity redundancy and performance required for any demanding user the p