Seagate 5400-RPM, 7200-RPM manual Recording and interface technology, Physical characteristics

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	3.5	Recording and interface technology

	Interface		Serial ATA (SATA)

	Recording method		Perpendicular

	Recording density BPI (bits/in max)		1,586k

	Track density TPI (tracks/in max)		341k

	Areal density (Gb/in2 max)		541
	Spindle speed (RPM) (± 0.2%)		5400
	(ST9750423AS, ST9750423ASG, ST9640424AS, ST9640423AS		5400
	and ST9640423ASG models only)

	Spindle speed (RPM) (± 0.2%) (all other models)		7200

	Maximum Internal transfer rate (Gb/s)		1130
	(ST9750423AS and ST9750423ASG models)		1130
	(ST9750423AS and ST9750423ASG models)

	Maximum Internal transfer rate (Gb/s)		1305
	(ST9750422AS, ST9750420AS, ST9750420ASG, ST9500424AS,		1305
	ST9500423AS and ST9500423ASG models)

	Maximum Internal transfer rate (Gb/s)		950
	(ST9640424AS, ST9640423AS and ST9640423ASG models)		950
	(ST9640424AS, ST9640423AS and ST9640423ASG models)

	I/O data-transfer rate (Gb/s max)		3.0

	Interleave		1:1

	Cache buffer		16MB (16,384KB)

3.6Physical characteristics

Drive specification

Height	(mm)	9.5 +/-0.2
	(in)	0.370	+/-0.008

Width	(mm)	69.85	+/-0.25
	(in)	2.750	+/-0.010

Length	(mm)	100.35 +0.20 / -0.25
	(in)	3.951	+0.008 / -.010

Typical weight		115 g
all models		115 g
		0.254 lb

Momentus Product Manual, Rev. B

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Contents Standard models Free-fall sensor models MomentusRevision Date Sheets affected or comments Revision historyContents Momentus Product Manual, Rev. B List of Figures Page Seagate Online Support and Services Seagate Technology support servicesStandard models Free Fall Protection models IntroductionAbout the Serial ATA interface Specification summary table Drive specificationsDrive specifications for 750, 640 and 500 GB models Altitude, nonoperating LBA mode Default logical geometryFormatted capacity Physical organizationDrive specification Physical characteristicsRecording and interface technology Start/stop times Seek timeTypical seek times Typical seek times ms ReadPower specifications Typical current profile Voltage tolerance Conducted noisePower management modes Power-management modesActive mode Idle modeEnvironmental specifications Operating shock ShockNonoperating shock VibrationAcoustics Drive A-weighted Sound Power Levels SWL, BAElectromagnetic immunity Test for Prominent Discrete Tones PDTsSafety certification Free Fall Protection featureReliability Agency certificationAustralian C-Tick N176 Korean RRLFCC verification Corrosive environment Environmental protectionEuropean Union Restriction of Hazardous Substances RoHS China Restriction of Hazardous Substances RoHS DirectiveHandling and static-discharge precautions Configuring and mounting the driveSerial ATA cables and connectors Configuring the driveDrive mounting Mounting dimensions-top, side and end viewHot-Plug compatibility Serial ATA Sata interfaceSerial ATA connector pin definitions Serial ATA device plug connector pin definitionsSignal Pin Function DefinitionCommand name Command code in hex ATA-standard commands Supported ATA commandsATA-standard security commands Command name Command code in hexWord Description Value Identify Device commandXxxxH Fffeh Description if bit is set to Bit Set Features command values Set Features commandA.R.T. commands 3 S.M.A.R.T. commandsCode in features register A.R.T. command Momentus Product Manual, Rev. B Index ITE TPI Momentus Product Manual, Rev. B Page Seagate Technology LLC