The Constellation 7200 hard drive enables manageable nearline storage solutions in 2.5" chassis — either direct attach or in a tiered storage environment — at the lowest power usage without compromising performance or reliability. Constellation 500GB SAS drives deliver cost-effective, eco-friendly nearline storage. Key Features and Benefits - Lowest operating power & enhanced power options with PowerChoice™ for even greater power savings during slow or idle periods. - First 2.5", 15mm business critical drive on the market designed for enterprise reliability, vibration performance and high data integrity. Fits in more server & storage slots! - Fastest Tier 2/Nearline HDD on the market (SAS @ 6Gb/s speed). At a system level (with more drives) the performance will be >2x as compared to 3.5" HDD. - The highest capacity 2.5" enterprise drive with 500GB with both SAS and SATA interfaces. (160GB SATA also available for boot/entry server applications). - 6Gbps SAS 2.0 allows for easier integration, enhanced features and outstanding performance. - Government-grade self-encrypting drive (SED) on SAS models. - Best performing nearline drive with Best-in-class Rotational Vibration. Best-Fit Applications - High Density Nearline Storage - Internet Infrastructure, Backup & Restore, Medical Imaging, Nearline Storage, Disaster Recovery, Check Imaging, Video Editing. - Blade Servers - Computation, Scientific Applications, Server Appliance, Web Content. - Rack Servers - Graphics, Security, Firewalls, Email. - Network Routers - Video Surveillance. - 24x7 Availability - Kiosks, ATMs, Video Lottery Terminals, Video Serves, High Reliability Govt/Military. - Workstations & Enthusiast PCs.