Seek Time; Start/Stop Times; Power Specifications; Power Consumption - Seagate ST1000LX000 Product Manual

2.5

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:
Track-to-track seek time is an average of all possible single-track seeks in both directions.
n
Average seek time is a true statistical random average of at least 5000 measurements of seeks between random tracks, less overhead.
n
Table 2 Typical seek times
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.
2.6

Start/stop times

Table 3 Start/stop times
Typical seek times (ms)
Power-on to ready (sec)
Standby to ready (sec)
2.7

Power Specifications

The drive receives DC power (+5V) through a native SATA power connector (refer to
2.7.1

Power consumption

Power requirements for the drives are listed in the table in
nominal conditions, at 25°C ambient temperature. These power measurements are done with Interface Power Management modes like HIPM
and DIPM enabled.
Spinup power
n
Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating speed.
Seek mode
n
During seek mode, the read/write actuator arm moves toward a specific position on the disk surface and does not execute a read or write
operation. Servo electronics are active. Seek mode power is measured based on three random seek operations every 100 ms. This mode is not
typical.
Read/write power and current
n
Read/write power is measured with the heads on track, based on three 63 sector read or write operations every 100 ms.
Idle mode power
n
Idle mode power is measured with the drive up to speed, with servo electronics active and with the heads in a random track location.
Standby mode
n
During standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/write electronics are in power-down
mode.
Seagate Laptop SSHD SATA Product Manual, Rev. M
Read
2.0
12.0
5.6
°
Typical Max @ 25
<1.0 <1.0
<1.0 <1.0
Table 4. Typical power measurements are based on an average of drives tested, under
C
Figure 2).
Drive Specifications
11