Dell 450GB 15K SAS 3.5-inch 3Gb/s HDSingle Port (SP) Hot-Plug Dell Hard Drive in DellF9541 3.5-inch Hot-Plug Hard Drive Tray (as pictured)Genuine Dell serial number and firmwareGenuine Dell Certified Enterprise Class Hard DrivePart Number(s)Dell Part# XX517Hitachi Part# HUS154545VLS300Overview:Serial Attached SCSI (SAS) is the logical evolution of SCSI including its long-established software advantage and the serial physical connection interface. With enterprise storage requirements escalating and becoming more complex factors such as larger capacity greater density security scalability and accessibility are more critical than ever. Enterprise data centers must be online all the time fulfill requests from numerous users simultaneously allow for constant growth and expansion and be maintained while in operation. Serial Attached SCSI (SAS) meets all these demands while providing the highest performance.Specifications:Category Dell HardDriveSub-Category 15KGeneration SASPart Number XX517-2PackProducts ID 467935Capacity 450GBInterface Serial Attached SCSI (SAS)Enclosure InternalDrive Dimensions 3.5 inches x 1/3H (Low Profile)Spindle Speed 15000RPMExternal Data Transfer Rate 3G = 3Gb/sec (375 MB/s)Seek Time 4.5msHotSwap YesManufacturer DellPre-Failure Warranty YesHot Swap Tray Included/Attached