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Seagate ST3160811AS, ST3120811AS Recording and interface technology, Physical characteristics

Models: ST3160211AS ST3120811AS ST380211AS ST3120211AS ST3160811AS ST340211AS ST380811AS

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2.4Recording and interface technology

Interface	Serial ATA (SATA)

Recording method	16/17 EPRML

Recording density KBPI (kbits/inch max)	756.09

Track density KTPI (ktracks/inch avg)	141.95

Areal density (Gbits/inch2 avg)	103.8
Spindle speed (RPM) (± 0.2%)	7,200

Average latency (msec)	4.16

Internal data-transfer rate (Mbits/sec max)	867.2

Sustained data transfer rate OD (Mbytes/sec max)	80

I/O data-transfer rate (Mbytes/sec max)	300

Interleave	1:1

Cache buffer
ST3160811AS	8 Mbytes (8,192 kbytes)
ST3120811AS
ST380811AS
ST3160211AS	2 Mbytes (2,048 kbytes)
ST3120211AS
ST380211AS
ST340211AS

2.5	Physical characteristics

Maximum height
	(mm)	19.99
	(inches)	0.787

Maximum width
	(mm)	101.6
	(inches)	101.6
	(inches)	4.000 +/- 0.010
		4.000 +/- 0.010

Maximum length
	(mm)	146.99
	(inches)	5.787

Max weight
	160 and 120 GB models	380 grams (0.838 pounds)
	80 and 40 GB model	365 grams (0.805 pounds)

Barracuda 7200.9 Serial ATA Product Manual, Rev. C

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Seagate ST3160811AS, ST3120811AS, ST3120211AS, ST3160211AS manual Recording and interface technology, Physical characteristics

Contents

Barracuda 7200.9 Serial ATA Page Contents Barracuda 7200.9 Serial ATA Product Manual, Rev. C List of Figures Page Introduction About the Serial ATA interface Specification summary tables Drive specifications Drive specification ST3160811AS ST3160211AS Drive specifications summary for 160 Gbyte models Barracuda 7200.9 Serial ATA Product Manual, Rev. C Drive specification ST3120811AS ST3120211AS Drive specifications summary for 120 Gbyte models Barracuda 7200.9 Serial ATA Product Manual, Rev. C Drive specification ST380811AS ST380211AS ST340211AS Drive specifications summary for 80 and 40 Gbyte models Barracuda 7200.9 Serial ATA Product Manual, Rev. C LBA mode Default logical geometryFormatted capacity Cylinders Read/write heads Sectors per track 16,383 Recording and interface technology Physical characteristics Typical seek times msec Read Write Seek timeStart/stop times Power specifications Voltage tolerance Typical current profilesConducted noise Active mode Power-management modesIdle mode Sleep mode Environmental specifications Vibration AcousticsOperating vibration Nonoperating vibration Reliability Electromagnetic immunityRadio frequency environments Test Description Performance level Reference standard Agency certification Safety certificationElectromagnetic compatibility Korean RRL European Union Restriction of Hazardous Substances RoHS Environmental protectionFCC verification Corrosive environment Barracuda 7200.9 Serial ATA Product Manual, Rev. C Handling and static-discharge precautions Configuring and mounting the drive Serial ATA cables and connectors Configuring the drive Drive mounting Mounting dimensions-top, side and end view Barracuda 7200.9 Serial ATA Product Manual, Rev. C Hot-Plug compatibility Serial ATA Sata interface Serial ATA connector pin definitions Serial ATA device plug connector pin definitionsSignal Pin Function Definition Command name Command code in hex Supported ATA commandsSupported ATA commands F4H Word Description Value Identify Device command Xx07H Bit Word Description if bit is set to Bit Word Set Features command values Set Features command Code in features register A.R.T. command 3 S.M.A.R.T. commandsM.A.R.T. commands Barracuda 7200.9 Serial ATA Product Manual, Rev. C Internet Seagate Technology support servicesPresales Support Technical Support Data Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Index RRL Sata Barracuda 7200.9 Serial ATA Product Manual, Rev. C Page Seagate Technology LLC