Seagate ST9450404FC Performance characteristics, Internal drive characteristics, Seek performance

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4.0Performance characteristics

This section provides detailed information concerning performance-related characteristics and features of Sav- vio 10K.4 FC drives.

4.1Internal drive characteristics

	ST9600204FC	ST9450404FC
Drive capacity*	600	450	GBs (formatted, rounded off value)
Read/write data heads	6	6
Tracks per inch	240,000	180,000	TPI
Peak bits per inch	1,430	1,430	kBPI
Areal density	343	257.4	Gb/in2
Internal data rate	1.62	1.62	Gb/s (variable with zone)
disk rotation speed	10K	10K	rpm
Avg rotational latency	3.0	3.0	ms

*One GB equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.

4.2Seek performance

See Section 9.5, "FC-AL physical interface" on page 58 and the Fibre Channel Interface Manual (part number 77767496) for additional timing details.

4.2.1Access time

Not including controller overhead1,2(ms)

			Read	Write

	Average		3.80	4.40
	Single track	600GB	0.30	0.55
	Single track	Typical	0.30	0.55
		Typical
	Full stroke		3.88	4.56

	Average		4.00	4.65
	Single track	450GB	0.32	0.58
	Single track	Typical	0.32	0.58
		Typical
	Full stroke		4.10	4.61

1.Typical access times are measured under nominal conditions of temperature, voltage, and horizontal orientation as measured on a representative sample of drives.

2.Access to data = access time + latency time.

Savvio 10K.4 FC Product Manual, Rev. A

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Contents ST9600204FC ST9450404FC Savvio 10K.4 FCRev. a 03/26/10 Initial release Revision historyContents Installation Seagate Technology support services Savvio 10K.4 FC Product Manual, Rev. a Scope Electromagnetic susceptibility Standards, compliance and reference documentsStandards Electromagnetic compatibilityEuropean Union Restriction of Hazardous Substances RoHS Ncits TR-19 Reference documentsGeneral description Media description Standard featuresPerformance ReliabilityFormatted capacities Factory-installed options User-installed accessoriesProgrammable drive capacity Seek performance Performance characteristicsInternal drive characteristics Access timePrefetch/multi-segmented cache control Format command execution time minutesGeneral performance characteristics Start/stop timeCache operation Prefetch operation Caching write dataUnrecoverable Errors Reliability specificationsError rates Recoverable ErrorsPreventive maintenance Reliability and serviceSeek errors Interface errors4 S.M.A.R.T Controlling S.M.A.R.TPerformance impact Thermal monitor Reporting controlDetermining rate Predictive failuresDST failure definition State of the drive prior to testingTemperature Log Page 0Dh Drive Self Test DSTExtended test Function Code 010b Invoking DSTShort and extended tests Short test Function Code 001bAbort Product warrantyPhysical/electrical specifications PowerChoiceTM power managementPowerChoice modes AC power requirements DC power requirements for ST9600204FC model 2Gb 4Gb Amps DC power requirementsDC power requirements for ST9450404FC model 2Gb 4Gb Amps General DC power requirement notes Power sequencingConducted noise immunity Current profiles Savvio 10K.4 FC Product Manual, Rev. a ST9600204FC Power dissipationST9450404FC Temperature a. Operating Environmental limitsRelative humidity Effective altitude sea level a. Operating Shock and vibrationShock Recommended mounting Package size Packaged/product weight Drop heightCorrosive environment Air cleanlinessVibration a. Operating-normal AcousticsChina Restriction of Hazardous Substances RoHS Directive Mounting configuration dimensions Mechanical specificationsDefect and error management Drive internal defects/errorsDrive error recovery procedures 77.87 FC-AL system errors Background Media ScanMedia Pre-Scan Idle Read After Write Deferred Auto-ReallocationCooling InstallationDrive ID/option selection Drive orientationAir flow Drive mountingGrounding Interface requirements FC-AL featuresFibre Channel link service frames Link services supported Type of frameFibre Channel task management functions Fibre Channel task management responsesFC Scsi FCP response codes Function name Response code NPort login Plogi payload Bytes Fibre Channel port loginProcess Login Plri payload Fibre Channel port login acceptFibre Channel Process Login NPort Login Accept ACC payload BytesFabric Login Flogi payload Bytes Fibre Channel Process Login AcceptFibre Channel fabric login Process Login Accept ACC payload BytesFabric Login Accept ACC payload Bytes Fibre Channel fabric accept loginOption Supported Dual port supportFibre Channel Arbitrated Loop options FC-AL options supportedSupported commands Command code Command name Scsi commands supportedVerify error recovery page 07h Savvio 10K.4 FC Product Manual, Rev. a Temperature page 0Dh Mode Sense data Inquiry dataSavvio 10K.4 FC inquiry data Bytes Data hex Page Mode Data Header 34 65 f8 70 00 00 02 Supported Feature or condition Miscellaneous operating features and conditionsPhysical characteristics FC-AL physical interfacePhysical description Connector requirements Electrical descriptionPin descriptions FC-AL transmitters and receivers FC-SCA pin descriptions Pin Signal name Signal typeFault LED Out PowerEnable port bypass signals Active LED OutMotor start controls 11 SEL6 through SEL0 ID lines Parallel Enclosure Services Interface ESIAlpa SEL ID Signal characteristics TTL input characteristicsDevice control codes LED driver signals FC Differential outputFC Differential input Receive eye diagram Eye diagram data values Link rate GHz Seagate Technology support services Warranty Support Direct.seagate.com Spp.seagate.comWeb Presales Support Technical Support Warranty ServiceData Recovery Services Authorized Service Centers Data Recovery Services Call Center Toll-free Direct dialSavvio 10K.4 FC Product Manual, Rev. a Index FCP Flogi Plogi Page See also cooling Page Seagate Technology LLC