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2.5 Physical characteristics
Maximum height
Maximum width
Maximum length
Typical weight
Cache buffer
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 5000 measurements of seeks between random tracks,
less overhead.
Typical seek times (ms)
Track-to-track
Average
Average latency
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
Note
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
The start/stop times listed below are for the 3TB and 4TB models.
Power-on to ready
(in seconds)
Standby to ready
(in seconds)
Ready to spindle stop
(in seconds)
Time-to-ready may be longer than normal if the drive power is removed without going through normal OS power down
procedures.
Seagate Desktop HDD Product Manual, Rev. A
Read
12.0
13 (typical)
17 (max)
13 (typical)
17 (max)
10 (typical)
11 (max)
26.11mm / 1.028 in
101.6mm / 4.0 in (± 0.010 in)
146.99mm / 5.787 in
635g / 1.400 lb
64MB
1.0
5.1
Drive Specifications
Write
1.2
12.0
9
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