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 meets all these demands while providing the highest performance.HP 146GB 2.5-inch (SFF)Serial Attached SCSI(SAS) 6G 15K Hot-Plug Hard Drive in G8 G9(Gen8 Gen9) SmartDrive Carrier (SC) (as pictured)Genuine HPE serial number and firmwareGenuine HPE Certified Hard Drive