- HP SAS (Serial Attached SCSI) HDDs (Hard Drives) are high-performance alternatives to SATA hard drives. SAS hard drives combine high-bandwidth and faster data transfer rates with better error detection and recovery. as well as having higher reliability specifications.- Higher hard drive performance compared to typical SATA drives- Higher hard drive reliability compared to typical SATA drives600GB SAS HDD. 15000RPM. 3.5"