Seagate ST340015ACE manual Seek time, Start/stop times, Power specifications

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8	Barracuda 5400.1 Product Manual, Rev. G

2.7Seek time

Seek measurements are taken with nominal power at 25°C ambient temper- ature. 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.

•Average seek time is a true statistical random average of at least 5,000 measurements of seeks between random tracks, less overhead.

Typical seek times (msec)	Read	Write

Average	12.5	13.5

Track-to-track	0.3	0.7

Read/write	15.5	16.5

Full stroke	26	28

Note. 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 or exceed the noted values. However, due to the manner in which these drives are formatted, benchmark tests that include command overhead or measure logical seeks may produce results that vary from these specifications.

2.8Start/stop times

Power-on to Ready (sec)	6.5 (max)
Standby to Ready (sec)	6.0 (typical)
Ready to spindle stop (sec)	10 (typical)

2.9Power specifications

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

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Contents Page Page Page Page Contents Seagate Technology support services Barracuda 5400.1 Product Manual, Rev. GList of Figures Barracuda 5400.1 Product Manual, Rev. G Introduction Barracuda 5400.1 Product Manual, Rev. G Drive specifications Specification summary tableDrive specification ST340015ACE 50,000 Humidity SeaShield LBA mode Default logical geometryPhysical organization Physical characteristics ATAPower specifications Seek timeStart/stop times Typical seek times msec Read WriteBarracuda 5400.1 Product Manual, Rev. G Power consumption Spinup powerSeek mode Read/write power and currentBarracuda 5400.1 Product Manual, Rev. G Typical 5V startup and operation current profile Power-management modes Active modeIdle mode Conducted noiseIdle and Standby timers Sleep modeEnvironmental specifications Ambient temperature Temperature gradient Wet bulb temperatureHumidity Relative humidity AltitudeBarracuda 5400.1 Product Manual, Rev. G Shock Operating shockNonoperating shock VibrationAcoustic mode AcousticsFluid Dynamic Bearing FDB motor acoustics Model Idle Quiet seek Performance seekReliability Performance Reference Test Description Level StandardElectromagnetic compatibility Agency certification Safety certificationKorean RRL FCC verification Barracuda 5400.1 Product Manual, Rev. G 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 Cable select optionUltra ATA/100 cable Drive mountingMaster SlaveMounting dimensions-top, side and end view Barracuda 5400.1 Product Manual, Rev. G ATA interface signals and connector pins ATA interfaceO pins and supported ATA signals Command name Command code in hex ATA-standard commands EC HCommand name Command code in hex Identify Device command ATA-standard security commandsWord Description Value 0C5AHXxxxH Xx3FH Description if bit is set to Bit Set Features command 0CHF1H Report full capacity available 4 S.M.A.R.T. commands Code in features Register A.R.T. commandSeagate Technology support services Online Services Internet MySeagateAutomated Phone Services 40Barracuda 5400.1 Product Manual, Rev. GUSA/Canada/Latin America Support Services European Support Services Africa/Middle East Support ServicesAsia/Pacific Support Services Barracuda 5400.1 Product Manual, Rev. G Index GMR Barracuda 5400.1 Product Manual, Rev. G 48Barracuda 5400.1 Product Manual, Rev. G Page Seagate Technology LLC

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