A host bus adapter that supplies a serial interface for point-to-point connection. This connection offers higher performance and increased aggregate bandwidth. When compared to parallel Small Computer System Interface (SCSI), this connection also offers higher availability with dual-ported disk drives and enhanced reliability.
The SAS interface provides universal interconnectivity with SATA devices, and it offers logical SCSI compatibility. The SAS interface offers the reliability, performance, and manageability available in SAS disk drives. Common electrical and physical connections permit the application to dictate the technology of choice for disk drives.