Seagate ST903203N1A2AS Momentus 7200.3 SATA Product Manual - Page 13
Physical characteristics, Seek time
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2.6 Physical characteristics Drive specification Height (mm) (inches) Width (mm) (inches) Length (mm) (inches) Typical weight ST9320421AS ST9320421ASG ST9250421AS ST9250421ASG ST9200421AS ST9200423ASG ST9160411AS ST9160411ASG ST9120411AS ST9120411ASG ST980411AS ST980411ASG 9.5 +/-0.2 0.374 +/-0.0078 69.85 +/-0.249 2.75 +/-0.0098 100.3 +/-0.25 3.95 +/-.010 110 grams 0.238 pounds 105 grams 0.227 pounds 2.7 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. Table 2: Typical seek times Typical seek times (msec) Track-to-track Average Full-stroke Average latency Read 1.0 11.0 22.0 4.17 Note. These drives are designed to consistently meet the seek times represented in this manual. Physical seeks, regardless of mode (such as track-to-track and average), are expected to meet the noted values. However, due to the manner in which these drives are formatted, benchmark tests that include command overhead or measure logical seeks may produce results that vary from these specifications. Momentus 7200.3 SATA Product Manual, Rev. C 7