Seagate ST94015AS, ST980825AS, ST96023AS, ST910021AS manual Power specifications

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2.9Power specifications

The drive receives DC power (+5V) through a native SATA power connector.

2.9.1Power consumption

Power requirements for the drives are listed in Table 3, on page 8. Typical power measurements are based on an average of drives tested, under nominal conditions, 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.

•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

Table 3:	DC power requirements

Power dissipation (watts)
Example: ST910021AS		+5V input average (watts, 25° C)	+5V typ amps

Spinup		—	1.1

Seek		2.6

Read		2.4

Write		2.4

Idle, performance mode*		2.1

Idle, active*		1.3

Idle, low power mode*		0.95

Standby		0.28

Sleep		0.28

*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.

8	Momentus 7200.1 SATA Product Manual, Rev. B

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Contents Momentus 7200.1 Sata ST910021AS ST980825AS ST96023AS ST94015ASPage Contents Momentus 7200.1 Sata Product Manual, Rev. B List of Figures Page Introduction About the Serial ATA Sata interface Drive specifications Specification summary tableTrack-to-track seek time msec typical Formatted capacity Default logical geometryLBA mode Cylinders Read/write heads Sectors per track 16,383Physical organization Physical characteristicsDrive specification Recording and interface technologyTypical seek times Seek timeStart/stop times Typical seek times msec Read WritePower specifications Additional details Typical current profilesDeferred spinup Active mode Power-management modesPower management modes Idle modeEnvironmental specifications Nonoperating shock ShockOperating shock VibrationDrive level acoustics AcousticsElectromagnetic immunity Radio frequency environmentsReliability Safety certificationMeasurement type Specification Agency certificationFCC verification Korean RRLAustralian C-Tick N176 Environmental protection European Union Restriction of Hazardous Substances RoHSCorrosive environment Momentus 7200.1 Sata Product Manual, Rev. B Configuring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsMounting dimensions-top, side and end view Drive mountingMomentus 7200.1 Sata Product Manual, Rev. B Serial ATA Sata interface Serial ATA connector pin definitionsSignal Segment Pin Function DefinitionPin Function Definition P10 Ground 2nd mate P11 ReservedSupported ATA commands Command name Command code in hex ATA-standard commandsCommand name Command code in hex ATA-standard power-management commandsMomentus 7200.1 Sata Product Manual, Rev. B Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordSet Features command Set Features command valuesCode in features register A.R.T. command 3 S.M.A.R.T. commandsA.R.T. commands Presales Support Seagate Technology support servicesInternet Technical SupportData Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Index ITE Sata Momentus 7200.1 Sata Product Manual, Rev. B Page Seagate Technology LLC