The Seagate Constellation was a line of high-capacity, enterprise-class 3.5-inch hard drives designed for 24/7 data center and cloud storage, emphasizing reliability, cost-effectiveness (low $/GB), and high performance with 7200 RPM speeds, SATA/SAS interfaces, and features like Self-Encrypting Drives (SED) for security. Key models included Constellation ES, ES.2, and ES.3, offering robust solutions for bulk unstructured data storage with advanced features like vibration tolerance and optimized power/cooling for dense environments. 

Key Characteristics & Models

Target Audience: Enterprise servers, data centers, cloud storage, system builders.

Performance: 7200 RPM, fast random performance, high data transfer rates (6Gb/s SAS/SATA).

Capacity: Offered various capacities, often in 1TB, 2TB, 3TB, and higher increments.

Reliability: Enterprise-grade features like rotational vibration (RV) tolerance for multi-drive systems, ensuring consistent performance.

Security: Available as Self-Encrypting Drives (SED) for data protection (e.g., Constellation ES.3).

Models: Popular generations included ES, ES.2, ES.3, and the cloud-focused CS (Constellation CS).

Benefits: Optimized for low power, efficient cooling, high density (TB per square foot), and lower total cost of ownership for bulk storage.