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2.6
Physical characteristics
Drive specification
Height
(mm)
(inches)
Width
(mm)
(inches)
Length
(mm)
(inches)
Weight (max)
ST9500325AS
ST9500325ASG
ST9400326AS
ST9320325AS
ST9320325ASG
ST9250315AS
ST9250315ASG
ST9160314AS
ST9160314ASG
ST9120315AS
ST9120315ASG
ST980313AS
ST980313ASG
ST9160301AS
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 5000 measurements of seeks between
random tracks, less overhead.
Table 4:
Typical seek times
Seek times (msec)
Track-to-track (typical)
Average (typical)
Full-stroke (max)
Average latency
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.
2.8
Start/stop times
Time to ready
Power-on to Ready (sec)
Standby to Ready (sec)
10
9.5 +/-0.2
0.374 +/-0.0079
69.85 +/-0.25
2.75 +/-0.0098
100.35 +0.20 / -0.25
3.957 +0.0079 / -0.0098
98.8 grams
0.218 pounds
93.5 grams
0.206 pounds
105 grams
0.23 pounds
Read
1
14
30
5.56
Max @ 25
Typical
3.6
3.8
1.8
2
°
C
Momentus 5400.6 SATA Product Manual, Rev. F
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