Seagate ST920814AM, ST940813AM, ST940814AM, ST930814AM, ST930813AM, ST920813AM Power specifications

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2.9Power specifications

The drive receives DC power (+5V) through the interface connector.

2.9.1Power consumption

Power requirements for the drives are listed in the table on page 11. Typical power measurements are based on an average of drives tested, under nominal conditions, using 5.0V input voltage at 25°C ambient tempera- ture.

Spinup power

Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating speed.

Seek mode

During seek mode, the read/write actuator arm moves toward a specific position on the disc 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 msecs. This mode is not typical.

Read/write power and current

Read/write power is measured with the heads on track, based on three 63 sector read or write operations every 100 msecs.

Idle mode power*

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

During Standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/ write electronics are in power-down model

Power dissipation

 

 

 

 

 

 

+5V average

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85C

 

25C

 

-20C

 

-30C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Watts

 

Amps

Watts

 

Amps

Watts

 

Amps

Watts

 

Amps

 

 

 

 

 

 

 

 

 

 

 

 

 

Spinup, typical

4.5

 

0.9

5

 

1.0

5

 

1.0

6.5

 

1.3

 

 

 

 

 

 

 

 

 

 

 

 

 

Spinup, maximum

5

 

1.0

5.5

 

1.1

5.5

 

1.1

7.5

 

1.5

 

 

 

 

 

 

 

 

 

 

 

 

 

Idle, performance mode*

1.35

 

0.27

1.72

 

0.34

2.18

 

0.43

2.76

 

0.55

 

 

 

 

 

 

 

 

 

 

 

 

 

Idle, active*

0.96

 

0.19

0.99

 

0.2

2.05

 

0.41

2.69

 

0.53

 

 

 

 

 

 

 

 

 

 

 

 

 

Idle, low power mode*

0.82

 

0.16

0.88

 

0.17

1.95

 

0.39

2.67

 

0.53

 

 

 

 

 

 

 

 

 

 

 

 

 

Seeking

1.57

 

0.31

1.90

 

0.38

2.38

 

0.47

2.97

 

0.59

 

 

 

 

 

 

 

 

 

 

 

 

 

Read

1.57

 

0.31

1.90

 

0.38

2.40

 

0.48

2.97

 

0.59

 

 

 

 

 

 

 

 

 

 

 

 

 

Write

1.38

 

0.27

1.70

 

0.34

2.45

 

0.49

3.00

 

0.60

 

 

 

 

 

 

 

 

 

 

 

 

 

Standby

0.30

 

0.06

0.26

 

0.05

0.22

 

0.04

0.22

 

0.04

 

 

 

 

 

 

 

 

 

 

 

 

 

Sleep

0.30

 

0.06

0.26

 

0.05

0.22

 

0.04

0.22

 

0.04

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels.

EE25 Series Product Manual, Rev. E

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Contents EE25 Series Page Contents EE25 Series Product Manual, Rev. E List of Figures EE25 Series Product Manual, Rev. E Introduction EE25 Series Product Manual, Rev. E Specification summary Drive specificationsAftermarket Specifications for 40 and 30 Gbyte modelsVibration, nonoperating Drive specification ST920813AM ST920814AM Specifications for 20 Gbyte modelsEE25 Series Product Manual, Rev. E LBA mode Default logical geometryFormatted capacity Physical organizationTechnology Specification Physical characteristicsRecording and interface technology Seek timeStart/stop times Read seek times vs temperature 85C 25C 20C 30CMsec Typical Max 85C 25C 20C 30CPower specifications Voltage tolerance Typical current profileConducted noise Active mode Power-management modesIdle mode Sleep modeAltitude Environmental specificationsNonoperating shock ShockOperating shock Acoustics Acoustic mode Idle Normal Seek Performance SeekVibration Operating vibrationElectromagnetic immunity Measurement type SpecificationReliability Test Description Performance Reference Level StandardAgency certification European Union Restriction of Hazardous Substances RoHS Environmental protectionCorrosive environment Page Handling and static discharge precautions Configuring and mounting the driveJumper settings Master/slave configurationCable-select option Drive mountingSignal Name Connector Cable Contact Conductor ATA interface signals and connector pinsCable Connector Signal Name Conductor Contact ATA interfaceCommand name Command code in hex ATA-standard commands Supported ATA commandsATA-standard security commands Command name Command code in hexATA-standard power-management commands Word Description Value Identify Device commandXx07H Bit Word Description if bit is set to Bit Word0CH Set Features commandEE25 Series Product Manual, Rev. E Internet Seagate Technology support servicesPresales Support Technical SupportData Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Numerics IndexPage Page EE25 Series Product Manual, Rev. E Page Seagate Technology LLC