Seagate Understanding Power Specifications and Consumption for HDDs

Page 18

2.8Power specifications

The drive receives DC power (5V or 12V) through a native SATA power connector. Refer to Figure 2 on page 22.

2.8.1Power consumption

Power requirements for the drives are listed in the table on page 9. Typical power measurements are based on an average of drives tested, under nominal conditions, using 5V and 12V input voltage at 25°C ambient tem- perature.

• Spinup power

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

• 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.

• Operating (CE seek profile)

Operating power is measured by simulating a typical PVR operating environment, using a 50% write, 50% read algorithm.

• 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 (2 disk models)

Avg (watts 25° C)

Avg 5V typ. amps

Avg 12V typ. amps

 

 

 

 

 

Spinup

 

2.0 (peak)

 

 

 

 

 

Idle*

 

3.834

0.223

0.226

 

 

 

 

 

Operating

 

4.107

0.295

0.219

 

 

 

 

 

Standby

 

0.699

0.121

0.008

 

 

 

 

 

Sleep

 

0.699

0.121

0.008

 

 

 

 

 

 

 

 

Power dissipation (1 disk models)

Avg (watts 25° C)

Avg 5V typ. amps

Avg 12V typ. amps

 

 

 

 

 

Spinup

 

2.0 (peak)

 

 

 

 

 

Idle*

 

3.008

0.248

0.147

 

 

 

 

 

Operating

 

3.445

0.316

0.155

 

 

 

 

 

Standby

 

0.707

0.127

0.006

 

 

 

 

 

Sleep

 

0.707

0.127

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.

Note. Drive supports PHY layer power management. When enabled, a power savings of ~300mw can be achieved in Idle, Standby and Sleep modes.

12

Video 3.5 HDD Product Manual, Rev. J

Image 18
Contents Video 3.5 HDD Revision history Revision Date Sheets affected or commentsPipeline HD.2 Series Sata Product Manual, Rev. J Pipeline HD.2 Series Sata Product Manual, Rev. J Contents Pipeline HD.2 Series Sata Product Manual, Rev. J Introduction About the Serial ATA interface Drive specifications Specification summary tablesDrive specifications summary for 1000GB models Drive specification ST31000424CS ST31000322CSVideo 3.5 HDD Product Manual, Rev. J Drive specifications summary for 500 and 320GB models Video 3.5 HDD Product Manual, Rev. J Drive specifications summary for 250 and 160GB models Drive specification ST3250412CS ST3250312CS ST3160316CSVideo 3.5 HDD Product Manual, Rev. J Formatted capacity Default logical geometryLBA mode Recording and interface technologyPhysical characteristics Seek timeStart/stop times Power specifications Typical current profiles Conducted noiseVoltage tolerance Idle mode Power management modesActive mode Sleep modeEnvironmental specifications Non-operating shock ShockOperating shock VibrationElectromagnetic immunity Drive A-weighted Sound Power Levels SWL, BAAcoustics emissions Test for Prominent Discrete Tones PDTsAgency certification Safety certificationReliability Annualized Failure Rate AFRKorean RRL Australian C-Tick N176FCC verification Environmental protection Corrosive environmentChina Restriction of Hazardous Substances RoHS Directive Configuring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsMounting dimensions for 1000GB models Drive mountingMounting dimensions for 500, 320, 250 and 160GB models Serial ATA Sata interface Hot-Plug compatibilitySignal Serial ATA device plug connector pin definitionsSerial ATA connector pin definitions Pin Function DefinitionSupported ATA commands Supported ATA commandsCommand name Command code in hex F3H Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordIdle Immediate command with Iunload faeture is supported Set Features command Set Features command values3 S.M.A.R.T. commands M.A.R.T. commandsCode in features register A.R.T. command Seagate Technology support services Warranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index RRL Page Video 3.5 HDD Product Manual, Rev. J Page Seagate Technology LLC
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