Seagate Constellation enterprise hard drives offer the combination of power savings, high capacity, high performance, rock-solid reliability and value for all enterprise storage application needs. Best suited for 24 x 7 business-critical multi-drive 2.5-inch server and storage system environments, Constellation enterprise drives feature a 3-Gbps SATA or 6-Gbps SAS interface and deliver best-in-class rotational vibration tolerance. Constellation hard drives offer maximum performance in high drive-count storage systems. Perpendicular recording technology increases capacity and reliability by storing data vertically instead of horizontally for maximum data density on the hard drive.