Seagate ST3250824SCE, ST3120213SCE manual Physical characteristics, Seek time, Drive specification

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2.5Physical characteristics

Drive specification

Maximum height
(mm)	26.1
(inches)	1.028

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

Maximum length
(mm)	146.99
(inches)	5.787

Maximum weight
ST3500841SCE	710 grams (1.57 lbs)
ST3400833SCE
ST3300822SCE	655 grams (1.44 lbs)
ST3250824SCE	580 grams (1.28 lbs)
ST3200827SCE
ST3160212SCE
ST3120213SCE
ST3802110SCE

2.6Seek 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.

Typical seek times (msec)	Read	Write

Track-to-track	0.8	1.0

Average	18	20

Average latency:	4.16	4.16

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.

12	DB35.2 Serial ATA Product Manual, Rev. C

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Contents DB35.2 Serial ATA Page Contents DB35.2 Serial ATA Product Manual, Rev. C List of Figures Page Introduction About the Serial ATA interface Drive specifications Specification summariesDrive specifications for 500 and 400 Gbyte models Drive specification ST3500841SCE ST3400833SCEBe asked to provide the drive serial number, model number or Drive specifications for 300, 250 and 200 Gbyte models Drive specification ST3300822SCE ST3250824SCE ST3200827SCEDrive specifications for 300, 250 and 200 Gbyte models Drive specifications for 160, 120, and 80 Gbyte models Drive specification ST3160212SCE ST3120213SCE ST3802110SCEDrive specifications for 160, 120, and 80 Gbyte models Formatted capacity Default logical geometryLBA mode Recording and interface technologyDB35.2 Serial ATA Product Manual, Rev. C Seek time Physical characteristicsDrive specification Typical seek times msec Read WritePower specifications Start/stop timesDC power requirements Typical current profilesIdle mode Power-management modesActive mode Sleep modeEnvironmental specifications Vibration AcousticsNonoperating shock Operating vibrationRadio frequency environments Electromagnetic immunityReliability Performance Reference Test Description Level StandardElectromagnetic compatibility Safety certificationAgency certification Korean RRLFCC verification Environmental protectionAustralian C-Tick N176 European Union Restriction of Hazardous Substances RoHSCorrosive environment DB35.2 Serial ATA Product Manual, Rev. C Configuring and mounting the drive Handling and static-discharge precautionsBreather filter hole precautions Breather filter hole locationConfiguring the drive Serial ATA cables and connectorsMounting dimensions-top, side and end view Drive mountingSerial ATA Sata interface Hot-Plug compatibilitySignal Serial ATA device plug connector pin definitionsSerial ATA connector pin definitions Pin Function DefinitionSupported ATA commands Supported ATA commandsCommand name Command code in hex F4H Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordSet Features command Set Features command values3 S.M.A.R.T. commands A.R.T. commandsCode in features register A.R.T. command DB35.2 Serial ATA Product Manual, Rev. C Internet Presales SupportTechnical Support Warranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index Pcba Sata Page Page Seagate Technology LLC