Seagate ST3000DM001 Barracuda 7200.9 PATA Product Manual - Page 28

Physical characteristics, Seek time, Start/stop times - benchmark

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2.5 Physical characteristics Drive specification Maximum height (mm) (inches) Maximum width (mm) (inches) Maximum length (mm) (inches) Max weight 40GB models 250, 200, 160, 120 and 80GB models 300 and 320 GB models 400 and 500GB models 26.1 1.028 101.6 4.000 +/- 0.010 146.99 5.787 525 grams (1.16 lbs) 580 grams (1.28 lbs) 655 grams (1.44 lbs) 710 grams (1.57 lbs) 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 (msec) Track-to-track Average Average latency: Read

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22
Barracuda 7200.9 PATA Product Manual, Rev. F
2.5
Physical characteristics
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.
*Measured in quiet mode
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 or exceed 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.
2.7
Start/stop times
Drive specification
Maximum height
(mm)
(inches)
26.1
1.028
Maximum width
(mm)
(inches)
101.6
4.000 +/- 0.010
Maximum length
(mm)
(inches)
146.99
5.787
Max weight
40GB models
250, 200, 160, 120 and 80GB models
300 and 320 GB models
400 and 500GB models
525 grams (1.16 lbs)
580 grams (1.28 lbs)
655 grams (1.44 lbs)
710 grams (1.57 lbs)
*Typical seek times (msec)
Read
Write
Track-to-track
<0.8
<1.0
Average
<11.0
<12.0
Average latency:
4.16
400 and 500GB
models
320, 300, 250 and
200GB models
160, 120, 80 and 40GB
models
Power-on to Ready (sec)
13 (max)
11 (max)
<10 (max)
Standby to Ready (sec)
13 (max)
11 (max)
<10 (max)
Ready to spindle stop (sec)
14 (max)
12 (max)
<11 (max)