Seagate® Constellation.2™ 6Gb/s SAS 1TB Hard Drive ST91000640SS Specifications Model Number ST91000640SS Interface 6-Gb/s SAS Cache 64MB Capacity 1TB Areal density (avg) 417Gb/in2 Guaranteed Sectors 1,953,525,168 PHYSICAL Height (maximum) 15.00mm (0.591 in) Width (maximum) 70.10mm (2.760 in) Length (maximum) 100.45mm (3.955 in) Weight (typical) 200g (0.440 lb) PERFORMANCE Spin Speed (RPM) 7200 RPM Sustained data transfer rate 115MB/s Average latency 4.16ms Random read seek time 7.5ms Random write seek time 8.5ms 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 0.88A 5V start max current 0.69A Average idle power 3.84W Average operating power 6.35W 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) 25 Gs for 2ms Nonoperating Shock (max) 400 Gs for 2ms ACOUSTICS Acoustics (Idle Volume) 2.2 bels Features Storage Type HDD
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