The 18.2 GB, 36.4 GB, and 73.4 GB 10, 000 rpm SCSI Disk Drives and Assemblies are excellent HDDs that support Ultra, Ultra2, and Ultra3 speeds for IBM pSeries and RS/6000. These disk drives give the systems exceptional performance and storage while supporting industry-standard interface speeds of up to 160 Mbps Ultra3 SCSI. All drives support the Fast/Wide SCSI speeds of 20, 40, and 80 Mbps.The higher SCSI bus data rate along with the 10, 000 rpm spinning speed of the disk platters can greatly improve a system's overall data throughput. These disk drives are a 3.5-inch diameter, 1-inch (25-mm) high form factor that allows them to be placed in dense system configurations.