Seagate ST3320311CS Pipeline HD.2 Series SATA Product Manual - Page 17
Physical characteristics, Seek time, Start/stop times
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2.5 Physical characteristics Maximum height Maximum width Maximum length Typical weight 1000GB model 500, 320, 250 and 160GB models 26.1mm / 1.028 in 20.20mm / 0.794 in 101.85mm / 4.010 in 146.99mm / 5.787 in 615g / 1.356 lb 500 and 320GB models 420g / 0.926 lb Cache buffer ST31000424CS, ST3500414CS, ST3320413CS and ST3250412CS ST31000322CS, ST3500312CS, ST3320311CS, ST3250312CS and ST3160316CS 250 and 160GB models 395g / 0.871 lb 16MB (16,384KB) 8MB (8,192KB) 2.6 Seek time Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics. The specifications in the table below are defined as follows: • Track-to-track seek time is an average of all possible single-track seeks in both directions. • Average seek time is a true statistical random average of at least 5,000 measurements of seeks between random tracks, less overhead. Typical seek times (ms) Track-to-track Average Read