Seagate ST3300631A, 7200.8 PATA, ST3250623A, ST3400632A manual Power specifications

Page 18

2.8Power specifications

The drive receives DC power (+5V or +12V) through a four-pin standard drive power connector.

2.8.1Power consumption

Power requirements for the drives are listed in the table on page 12. Typical power measurements are based on an average of drives tested, under nominal conditions, using +5.0V and +12.0V input voltage at 25°C ambi- ent temperature.

•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 represents the worst- case power consumption, using only random seeks with read or write latency time. This mode is not typical and is provided for worst-case information.

•Read/write power and current

Read/write power is measured with the heads on track, based on a 16-sector write followed by a 32-msec delay, then a 16-sector read followed by a 32-msec delay.

•Operating power and current

Operating power is measured using 40 percent random seeks, 40 percent read/write mode (1 write for each 10 reads) and 20 percent drive idle mode.

•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 mode.

Table 4:

DC power requirements

 

 

 

 

 

 

 

Power dissipation (watts)

Average

5V typ

12V typ

Example: ST3400832A

(watts, 25° C)

amps

amps

 

 

 

 

 

Spinup

 

—

—

2.8 (peak)

 

 

 

 

 

Idle

 

7.2

0.401

0.433

 

 

 

 

Idle* (with offline activity)

9.1

0.78

0.433

 

 

 

 

Operating (40% r/w, 40% seek, 20% inop.)

12.8

0.841

0.715

 

 

 

 

Seeking (random, 20% idle)

12.4

0.602

0.782

 

 

 

 

 

Standby

 

0.8

0.145

0.006

 

 

 

 

 

Sleep

 

0.8

0.145

0.006

 

 

 

 

 

*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.

12

Barracuda 7200.8 PATA Product Manual, Rev. F

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Contents Barracuda 7200.8 Pata Page Contents Barracuda 7200.8 Pata Product Manual, Rev. F List of Figures Barracuda 7200.8 Pata Product Manual, Rev. F Introduction Barracuda 7200.8 PataBarracuda 7200.8 Pata Product Manual, Rev. F Drive specifications Specification summary tableDrive specifications for 400 Gbyte models Drive specification ST3400832A ST3400632ABarracuda 7200.8 Pata Product Manual, Rev. F Drive specifications for 300 Gbyte models Drive specification ST3300831A ST3300631AFollowing web Drive specifications for 250 and 200 Gbyte models Drive specification ST3250823A ST3250623A ST3200826A Barracuda 7200.8 Pata Product Manual, Rev. F Formatted capacity Default logical geometryLBA mode Recording and interface technologyPhysical characteristics Seek timeStart/stop times Power specifications Typical current profile Conducted noiseVoltage tolerance Idle mode Power-management modesActive mode Sleep modeEnvironmental specifications Nonoperating shock ShockOperating shock VibrationFluid Dynamic Bearing FDB motor acoustics AcousticsElectromagnetic immunity Radio frequency environmentsAgency certification Safety certificationReliability Electromagnetic compatibilityAustralian C-Tick N176 FCC verificationEnvironmental protection Corrosive environmentEuropean Union Restriction of Hazardous Substances RoHS Configuring and mounting the drive Handling and static discharge precautionsBreather filter hole precautions Breather filter hole locationDrive as master with a non-ATA-compatible slave Jumper settingsMaster/slave configuration Cable-select optionDrive mounting Ultra ATA/100 cableMounting dimensions-top, side and end view Barracuda 7200.8 Pata Product Manual, Rev. F ATA interface signals and connector pins ATA interfaceSupported ATA commands Command name Command code in hexF4H Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Set Features command 4 S.M.A.R.T. commandsCode in features Register A.R.T. command Presales Support Seagate Technology support servicesInternet Technical SupportWarranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index Page TMR Barracuda 7200.8 Pata Product Manual, Rev. F Page Seagate Technology LLC
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