Physical Characteristics; Seek Time - Seagate Barracuda ST3808110AS Product Manual

2.5

Physical characteristics

Maximum height ( , , , , and models)
(mm)
(inches)
Maximum height (all other models)
(mm)
(inches)
Maximum width
(mm)
(inches)
Maximum length
(mm)
(inches)
Max weight
40, 60, 80, 120, 200, and 250 GB models
300GB models
400 and 500GB models
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:
*Measured in performance mode unless otherwise noted.
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.
20
Models
All 400 and 500GB
All 300, 250, 200, 160 and 120GB
All 80GB
All
19.99
0.787
26.1
1.028
101.6
4.000 +/- 0.010
146.99
5.787
580 grams (1.28 lbs)
655 grams (1.44 lbs)
710 grams (1.57 lbs)
Read
<0.8
<8.2
<8.0
<9.5
4.16
Barracuda 7200.9 Serial ATA Product Manual, Rev. D
Write
<1.0
<9.0
<9.0
<10.5
4.16