10
SV35.3 Series Serial ATA Product Manual, Rev. B
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 CE Seek 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 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
Note.
Start/stop measurements are taken with nominal power at 25°C ambient temperature.
*Typical seek times (msec)
Read
Write
Track-to-track (1000, 750 & 500 GB models)
< 0.5
< 1.5
Track-to-track (250 GB model)
< 1.0
< 1.2
Average (1000, 750 & 500 GB models)
< 16.0
< 16.5
Average (250 GB model)
< 15.0
< 16.0
1 TB models
750 GB models
500 GB models
250 GB models
Power-on and Standby to Ready (sec)
17 (max)
15 (max)
13 (max)
15 (max)
Ready to spindle stop (sec)
12 (max)
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