72.0 GB hot-swap single-port Serial Attached SCSI (SAS) hard drive. Serial Attached SCSI is the logical evolution of SCSI and encompasses the long-established software advantages as well as the electrical and physical interface of Serial ATA. Given the increasing and more complex demands on enterprise storage, factors such as larger capacity, higher density, security, scalability, and accessibility are more important than ever. Enterprise data centers must be online 24/7, meet requests from numerous users simultaneously, enable constant growth and expansion, and be maintained while in operation. Serial Attached SCSI meets all these requirements while delivering the highest performance. As technology advances, support for devices continues to improve, making it an even more attractive alternative for enterprise users seeking a solution that is far superior and more flexible than any other storage technology. The results of aligning Serial Attached SCSI and Serial ATA technologies to serve storage users who need large capacity at lower costs will provide even more options for the storage industry.