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Drive Specifications
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,
Note
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
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
powerdown procedures.
2.8 Power specifications
The drive receives DC power (+5V or +12V) through a native SATA power connector. Refer to
2.8.1 Power consumption
Power requirements for the drives are listed in
drives tested, under nominal conditions, using 5.0V and 12.0V input voltage at 25°C ambient temperature.
• Spinup power
Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating
speed.
14
Read
1.0
12.0
15 (typical)
17 (max)
15 (typical)
17 (max)
10 (typical)
11 (max)
Table 2
. Typical power measurements are based on an average of
26.11mm / 1.028 in
101.6mm / 4.0 in ( ± 0.010 in)
146.99mm / 5.787 in
610g / 1.345 lb
64MB
Write
1.2
12.0
5.1
Video 3.5 HDD SATA Product Manual, Rev. A
www.seagate.com
.
Figure 1 on page 24
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