Seagate Constellation ES fourth-generation drives are among the highest-capacity drives available and are the only 6Gb/s SAS nearline hard drives on the market. These drives feature enterprise-class reliability and power and performance efficiencies, making them ideal for business-critical, 24x7 multi-drive server and storage environments.ENTERPRISE STORAGE HARD DRIVEThe Seagate Constellation ES enterprise hard drives deliver industry leading reliability, large capacity, and high data transfer rate for 24 x 7, multi-drive, business-critical applications.neweggPOWERCHOICE TECHNOLOGYThe Seagate Constellation ES hard drives include Seagate PowerChoice technology for even greater on-demand power savings during slow or idle periods.