Serial Attached SCSI (SAS) provides a superior storage solution. With storage requirements escalating and becoming more complex, factors such as performance, increased reliability, 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. SAS meets all these demands. HP SAS drives are available in both Small Form Factor (SFF) and 3.5" models. 3.5" SAS drives combine high capacity with enterprise reliability and performance. SFF SAS drives provide superior performance and reliability at half the power of 3.5" SAS drives. Available models include: 2.5" 10K - 146GB, 72GB, & 36GB; 2.5" 15K - 72GB & 36GB; and 3.5" 15K - 300GB, 146GB, 72GB, & 36GB.