Seagate 250GB Constellation SATA 6Gb/s 64MB Cache 2.5-Inch Internal Bare Drive (ST9250610NS) Highest capacities and best reliability available in an SFF, 7200-RPM enterprise-class nearline drive Best-in-class rotational vibration tolerance ensures unrivaled performance in high spindle-density applications, and multi-drive firmware maximizes system availability Self-Encrypting Drive (SED) models with Seagate Instant Secure Erase technology SATA 6Gb/s for economical 7200-RPM performance