Enterprise Serial Attached SCSI (SAS) hard drives offer the best combination of performance while providing the highest data integrity for server & external storage solutions. The 6 Gbps SAS interface provides double the data transfer rates over the previous generation & 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 & puts enterprise-class functionality within financial reach of businesses of all sizes.