Seagate ST9200420AS Seek time, Start/stop times, Typical seek times, Time to ready Typical Max

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2.7Seek time

Seek measurements are taken with nominal power at 25°C ambient temperature. 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.

Table 2:	Typical seek times

*Typical seek times (msec)		Read	Write

Track-to-track		1.0	1.5

Average		11.0	13.0

Full-stroke		22.0	24.0

Average latency		4.17

*Measured in performance mode

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 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

Time to ready	Typical	Max

Power-on to Ready (sec)	4	8

Standby to Ready (sec)	4	8

Spin down	5	8

Momentus 7200.2 SATA Product Manual, Rev. E

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Contents Momentus 7200.2 Sata Page Contents Momentus 7200.2 Sata Product Manual, Rev. E List of Figures Page Introduction About the Serial ATA Sata interface Specification summary table Drive specificationsWill display the warranty information for your drive LBA mode Default logical geometryFormatted capacity Cylinders Read/write heads Sectors per track 16,383Physical organization Physical characteristicsRecording and interface technology Start/stop times Seek timeTypical seek times Typical seek times msec Read WritePower specifications Conducted noise Typical current profileVoltage tolerance Power management modes Power-management modesActive mode Idle modeEnvironmental specifications Operating shock ShockNonoperating shock VibrationElectromagnetic immunity AcousticsDrive level acoustics Radio frequency environmentsSafety certification Free Fall Protection featureReliability Agency certificationAustralian C-Tick N176 Korean RRLFCC verification Corrosive environment超出 Environmental protectionPage Momentus 7200.2 Sata Product Manual, Rev. E Handling and static-discharge precautions Configuring and mounting the driveSerial ATA cables and connectors Configuring the driveDrive mounting Drive dimensionsMomentus 7200.2 Sata Product Manual, Rev. E Serial ATA Sata interface Serial ATA connector pin definitionsSegment Pin Function Definition P10 Ground 2nd mate P11 Reserved Pin Function DefinitionCommand name Command code in hex ATA-standard commands Supported ATA commandsATA-standard power-management commands Command name Command code in hexATA-standard security commands Word Description Value Identify Device commandXxxxH Bit Word Description if bit is set to Bit WordSet Features command values Set Features commandA.R.T. commands 3 S.M.A.R.T. commandsCode in features register A.R.T. command Momentus 7200.2 Sata Product Manual, Rev. E Internet Seagate Technology support servicesPresales Support Technical SupportData Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call Center Toll-free Direct dial Index ITE Sata Momentus 7200.2 Sata Product Manual, Rev. E Page Seagate Technology LLC