The IBM 146 GB 15K rpm SAS 2.5-inch Slim-HS HDDs provide 2.5-inch form factor that can be used as hot-swap drives. The addition of a 146 GB 15K rpm offering to the System x and BladeCenter blade family of 2.5-inch SAS HDDs makes it the highest-performing SFF option. These drives are positioned at the top of the SAS SFF HDD line based on increased performance and capacity.