Seagate® Constellation.2™ SATA 6Gb/s 500GB Hard Drive ST9500620NS The Constellation 7200 hard drive enables secure, 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 with self-encrypting drive technology deliver cost-effective, secure enterprise-class storage for nearline applications. Seagate® Constellation.2™ drives are the most energy efficient enterprise drives on the market. Designed for enterprise robustness, Constellation.2 is available in capacities up to 1TB and offers reliable storage for high capacity servers and storage arrays in a minimal footprint. Features Industry’s first 2.5-inch 1TB capacity-optimized drive for dense, space-constrained data centers allows you to store twice as much data in the same footprint. Build highly efficient bulk storage solutions while lowering your power consumption costs Designed for robust 24x7 operation with a 1.4M hour mean-time-between-failure (MTBF) rating Best-in-class rotational vibration tolerance ensures unrivaled performance in high spindle-density applications, and multi-drive firmware maximizes system availability Choose from 6Gb/s SAS with improved data integrity, scalability and fastest data access or SATA 6Gb/s for economical 7200-RPM performance TCG- compliant, Self-Encrypting Drive (SED) security option cuts IT drive retirement expenses while securely protecting data Specifications Specifications Model Number ST9500620NS Interface SATA 6Gb/s Cache 64MB Capacity 500GB Areal density (avg) 417Gb/in2 Guaranteed Sectors 976,773,168 PHYSICAL Height 14.8mm (0.583 in) Width 70mm (2.76 in) Length 100.5mm (3.957 in) Weight (typical) 183g (0.403 lb) PERFORMANCE Spin Speed (RPM) 7200 RPM Average latency 4.16ms Random read seek time 8.5ms Random write seek time 9.5ms I/O data transfer rate 600MB/s Unrecoverable read errors 1 in 1015 RELIABILITY MTBF 1,400,000 hours Annual Failure Rate 0.62% POWER 12V start max current 0.79A 5V start max current 0.48A Average idle power 2.67W Average operating power 4.51W ENVIRONMENT Ambient Temperature Operating 5°–60°C Nonoperating -40°–70°C Maximum operating temperature change 20°C per hour Maximum nonoperating temperature change 20°C per hour Shock Operating Shock (max) Read 70 / Write 40 Gs for 2ms Nonoperating Shock (max) 400 Gs for 2ms ACOUSTICS Acoustics (Idle Volume) 2.2 bels Acoustics (Seek Volume) 2.8 bels Features Storage Type HDD