Enterprise Serial Attached SCSI (SAS) hard drives offer the best combination of performance while providing the highest data integrity for server and external storage solutions. The 6 Gbps SAS interface provides double the data transfer rates over the previous generation and provide the scalability required by data centers worldwide. SAS has become the hard drive interface of choice for enterprise-based storage solutions today. With full duplex, bidirectional I/O, these hard drives offer an average of 135 percent increased performance over SATA-based solutions and puts enterprise-class functionality within financial reach of businesses of all sizes. IBM 300GB 15K 6Gbps SAS 2.5" SFF HS HDD 2.5"