Seagate ST336807FC manual Seek performance characteristics, Access time, GHz

Page 24

4.2Seek performance characteristics

4.2.1Access time [4]

Not including controller overhead (without disconnect) [1]

	Drive level
	Read	Write
		msec
Average—Typical [2]	4.9	5.4
Single Track—Typical [2]	0.45	0.65
Full Stroke—Typical [2]	9.9	10.5

4.2.2Format command execution time (in minutes)

	ST336807FC
Maximum (with verify)	25
Maximum (without verify)	13

4.2.3Generalized performance characteristics

Minimum sector interleave

1 to 1

Data buffer transfer rate to/from disc media (one 512-byte sector):

	ST336807FC
Minimum [3]*	59	MBytes/sec
Maximum [3]	118	MBytes/sec

Sustainable disc transfer rate:

	ST336807FC
Minimum [3]*	39	MBytes/sec
Maximum [3]	80	MBytes/sec

Fibre Channel Interface maximum instantaneous transfer rate 1 GHz	2 GHz
106 Mbytes/sec* per port	212 Mbytes/sec* per
(dual port = 212 Mbytes/	port (dual port = 424
sec*)	Mbytes/sec*)

Note. 1 Megabyte (MB) = 1,000,000 bytes.

Sector Sizes

Default is 512-byte data blocks.

Logical block sizes

Default is 512-byte data blocks

Variable 512 to 528 bytes per sector in a multiple of 4 bytes per sector.

Read/write consecutive sectors on a track

Yes

12	Cheetah 10K.7 36GB FC Product Manual, Rev. A

Image 24

Contents Cheetah 10K.7 FC Page Cheetah 10K.7 FC Page Revision status summary sheet Rev. a 05/04/05 All. Initial releaseRevision Date Sheets Affected Page Contents Physical/electrical specifications Defect and error managementInstallation Interface requirementsSeagate Technology support services Viii Cheetah 10K.7 36GB FC Product Manual, Rev. a List of Figures Cheetah 10K.7 FC family disc driveCheetah 10K.7 36GB FC Product Manual, Rev. a Scope Cheetah 10K.7 FC family disc driveCheetah 10K.7 36GB FC Product Manual, Rev. a Applicable standards and reference documentation StandardsElectromagnetic compatibility Electromagnetic susceptibilityElectromagnetic compliance European Union Restriction of Hazardous Substances RoHSReference documents Fibre Channel Interface ManualCheetah 10K.7 36GB FC Product Manual, Rev. a General description Standard features Media descriptionPerformance ReliabilityFormatted capacities Programmable drive capacityFactory-installed accessories Factory-installed optionsUser-installed accessories Performance characteristics Internal drive characteristicsST336807FC Seek performance characteristics Access timeFormat command execution time in minutes Generalized performance characteristicsStart/stop time Prefetch/multi-segmented cache controlCache operation Caching write data Prefetch operation Cheetah 10K.7 36GB FC Product Manual, Rev. a Reliability specifications Error ratesRecoverable Errors Reliability and service Hot plugging the drive 4 S.M.A.R.TControlling S.M.A.R.T Performance impact MillisecondsReporting control Determining rateTemperature Log page 0Dh Parameter Code DescriptionDrive Self Test DST State of the drive prior to testing DST Failure DefinitionImplementation Invoking DSTProduct warranty Short test Function Code 001bExtended test Function Code 010b Log page entriesShipping Product repair and return informationPhysical/electrical specifications AC power requirementsDC power requirements ST336807FC DC power requirementsGeneral DC power requirement notes Power sequencingConducted noise immunity Typical ST336807FC drive, 2 Gbit, +12V current profile Typical ST336807FC drive, 2 Gbit, +5V current profilePower dissipation ST336807FCTemperature Environmental limitsRelative humidity Effective altitude sea levelPackage size Packaged/product weight Drop height Shock and vibrationShock Recommended mounting Air cleanliness VibrationCorrosive environment Mechanical specifications AcousticsMounting configuration dimensions Defect and error management Drive internal defects/errorsDrive error recovery procedures 77.7 FC-AL system errors Background Media ScanMedia Pre-Scan Cheetah 10K.7 36GB FC Product Manual, Rev. a Installation Drive ID/option selectionLED connections Physical interface Drive Front1 J6 connector requirements Drive orientationCooling Drive mounting GroundingFC-AL features Fibre Channel link service framesLink services supported Type of frame Link serviceFibre Channel task management functions Fibre Channel Scsi FCP task management functionsFibre Channel task management responses FC Scsi FCP response codesFibre Channel port login NPort login Plogi payloadBytes Fibre Channel port login accept NPort Login Accept ACC payloadFibre Channel Process Login Process Login Plri payloadFibre Channel Process Login Accept Process Login Accept ACC payloadFibre Channel fabric login Fabric Login Flogi payloadFibre Channel fabric accept login Fabric Login Accept ACC payloadDual port support Fibre Channel Arbitrated Loop optionsFC-AL options supported Option SupportedScsi commands supported Supported commandsCommand code Supported Command name Supported commands Supported commands Supported commands Supported commands Mode Sense data Inquiry dataCheetah 10K.7 FC inquiry data Bytes Data hexPage DEF CHG Miscellaneous operating features and conditions Miscellaneous featuresSupported Feature or condition Miscellaneous statusPhysical characteristics FC-AL physical interfacePhysical description Connector requirements Part description Positions Part number FeaturesJ6 connector dimensions Electrical descriptionPin Signal name Signal type Pin descriptionsFC-SCA pin descriptions Power Fault LED OutFC-AL transmitters and receivers Enable port bypass signals Normal command activity LED statusActive LED Out Active LED Out conditionsMotor start control signals Parallel Enclosure Services Interface ESIMotor start controls 11 SEL6 through SEL0 ID linesSetting Arbitrated loop physical address Alpa valuesHex Dec Signal characteristics LED driver signals LED drive signalDifferential Pecl output characteristics Differential Pecl input characteristicsEye diagram data values Link rate GHzCheetah 10K.7 36GB FC Product Manual, Rev. a Seagate Technology support services Internet MySeagate Reseller.seagate.comPresales Support Technical SupportWarranty Service Data Recovery Services Authorized Service CentersData Recovery Services FAX services-All Europe toll call Call center Presales and Technical Support Warranty ServiceToll-free support numbers Asia/Pacific support services Publication feedback survey Cheetah 10K.7 36GB FC Product Manual, Rev. a Index NumericsFAN Flogi PBC Page See also cooling