Seagate ST3600057FC Performance characteristics, Internal drive characteristics, Access time

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4.0Performance characteristics

This section provides detailed information concerning performance-related characteristics and features of Cheetah 15K.7 FC drives.

4.1Internal drive characteristics

	ST3600057FC	ST3450857FC	ST3300657FC
	ST3600957FC	ST3450757FC	ST3300557FC	Gbytes (formatted, rounded off value)*
Drive capacity	600	450	300	Gbytes (formatted, rounded off value)*
Read/write data heads	8	6	4
Tracks per inch	165,000	165,000	165,000	TPI
Peak bits per inch	1,361	1,361	1,361	KBPI
Areal Density	225	225	225	Gbits/inch2
Internal data rate	1.49 - 2.37	1.49 - 2.37	1.49 - 2.37	Gbits/sec (max)
disk rotation speed	15k	15k	15k	RPM
Avg rotational latency	2.0	2.0	2.0	msec

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

4.2Seek performance characteristics

See Section 10.5, "FC-AL physical interface" on page 63 and the Fibre Channel Interface Manual (part number 77767496) for additional timing details.

4.2.1Access time

Not including controller overhead1,2(msec)

		Read	Write
Average	Typical	3.4	3.9
Single track	Typical	0.2	0.44
Full stroke	Typical	6.6	7.4

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.

4.2.2Format command execution time (minutes)

When changing sector sizes, the format times shown below may need to be increased by 30 minutes.

	ST3600057FC	ST3450857FC	ST3300657FC
Maximum (with verify)	119	88	58
Maximum (without verify)	60	44	29

Cheetah 15K.7 FC Product Manual, Rev. A

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Contents Standard models Self-Encrypting Drive models Cheetah 15K.7 FCPage Contents Interface requirements Defect and error managementInstallation About self-encrypting drivesSeagate Technology support services Cheetah 15K.7 FC Product Manual, Rev. a Model Number Capacity Self-Encrypting Drive SED ScopeElectromagnetic susceptibility Applicable standards and reference documentationStandards Electromagnetic compatibilityEuropean Union Restriction of Hazardous Substances RoHS Ncits TR-20 Reference documentsGeneral description Standard features Formatted capacities Media descriptionPerformance ReliabilityFactory-installed options User-installed accessoriesProgrammable drive capacity Access time Performance characteristicsInternal drive characteristics Seek performance characteristicsGeneral performance characteristics Start/stop timePrefetch/multi-segmented cache control Caching write data Cache operationPrefetch operation Unrecoverable Errors Reliability specificationsError rates Recoverable ErrorsPreventive maintenance Reliability and serviceSeek errors Interface errorsMilliseconds 4 S.M.A.R.TControlling S.M.A.R.T Performance impactThermal monitor Temperature Log Page 0DhDetermining rate Predictive failuresImplementation State of the drive prior to testingDrive Self Test DST DST failure definitionLog page entries Short and extended testsShort test Function Code 001b Extended test Function Code 010bProduct warranty ShippingProduct repair and return information Physical/electrical specifications AC power requirementsDC power requirements ST3450857FC DC power requirements Gbit Amps ST3600057FC DC power requirements Gbit AmpsST3300657FC DC power requirements Gbit Amps General DC power requirement notesPower sequencing Conducted noise immunityCurrent profiles Typical ST3450857FC current profiles Typical ST3300657FC current profiles 600GB model Power dissipation450GB models Temperature a. Operating Environmental limits300GB models Effective altitude sea level a. Operating Relative humidityPackage size Packaged/product weight Drop height Shock and vibrationShock Recommended mounting Corrosive environment Air cleanlinessVibration a. Operating-normal AcousticsElectromagnetic susceptibility See Section RoHS compliance statementMounting configuration dimensions Mechanical specificationsData encryption Controlled accessAdmin SP About self-encrypting drivesData bands Default passwordRandom number generator RNG Drive lockingCryptographic erase Authenticated firmware downloadPower requirements Supported commandsDefect and error management Drive internal defects/errorsDrive error recovery procedures Page These values are subject to change FC-AL system errorsBackground Media Scan Media Pre-ScanDeferred Auto-Reallocation Idle Read After Write Installation Drive ID/option selectionDrive orientation Air flow CoolingGrounding Drive mountingInterface 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 loginFibre Channel port login accept NPort Login Accept ACC payload BytesProcess Login Plri payload Fabric 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 loginFC-AL options supported Scsi commands supportedDual port support Fibre Channel Arbitrated Loop optionsSupported commands Cheetah 15K.7 FC Product Manual, Rev. a Cheetah 15K.7 FC Product Manual, Rev. a Background Medium Scan 15h Mode Sense data Inquiry dataCheetah 15K.7 FC inquiry data Bytes Data hex Page Mode Data Header Block Descriptor Ec b2 5c 00 00 02 Miscellaneous status Miscellaneous operating features and conditionsMiscellaneous features Supported Feature or conditionPhysical characteristics FC-AL physical interfacePhysical description Connector requirements Electrical descriptionPin descriptions FC-SCA pin descriptions Pin Signal name Signal type Pin Signal name Signal typeFC-AL transmitters and receivers Fault LED Out PowerEnable port bypass signals Active LED OutMotor start controls 10.5.11 SEL6 through SEL0 ID lines Parallel Enclosure Services Interface ESISetting Arbitrated loop physical address Alpa valuesHex Dec Signal characteristics TTL input characteristics provides the TTL 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 Presales SupportTechnical Support Warranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Numerics IndexDevctrlcode FCP Mtbf Page See also cooling Page Cheetah 15K.7 FC Product Manual, Rev. a Page Seagate Technology LLC

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