Seagate ST380215ACE ユーザーズマニュアル
DB35.3 Series SATA/PATA Product Manual, Rev. F
7
2.1.4
Physical characteristics
2.1.5
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:
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.
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.
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.
2.1.6
Start/stop times
Drive specification
Maximum height
(mm)
(inches)
20.2
0.794
Maximum width
(mm)
(inches)
101.6
4.000
Maximum length
(mm)
(inches)
146.6
5.772
Typical weight
380 grams (0.838 lbs) 160 GB models
370 grams (0.816 lbs) 80 GB models
Cache Size
2 Mbytes
Typical seek times (msec)
Read
Write
Track-to-track
<1.0
<1.2
Average
<14.0
<15.0
Average latency
4.16
4.16
Power-on to Ready (sec)
16 (max)
Standby to Ready (sec)
16 (max)
Ready to spindle stop (sec)
10 (max)