Seagate ST336607FC manual Power dissipation ST3146807FC, ST373307FC

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24	Cheetah 10K.6 FC Product Manual, Rev. B

6.3Power dissipation

ST3146807FC

Typical power dissipation under idle conditions is 10.72 watts (37.3 BTUs per hour).

To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 9). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.

ST3146807FC DC CURRENT/POWER vs THROUGHPUT (2 Gb)

Random 8 Block Reads

	1.800					18.00
	1.600					16.00
	1.400					14.00
Amperes	1.200					12.00
	1.000					10.00

	0.800					8.00
	0.600					6.00
	0.400					4.00
	0.0	50.0	100.0	150.0	200.0	250.0

I/Os per Second

5Volt A 12 Volt A

Watts

Power (watts)

Figure 9. ST3146807FC DC current and power vs. input/output operations per second

Note. Values shown are for operation at 2Gb, for operation at 1Gb, reduce the +5V by.10 amps. The +12V current values are not affected by loop speed.

ST373307FC

Typical power dissipation under idle conditions is 8.99 watts (30.7 BTUs per hour).

To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 9). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.

ST373307 FC CURRENT/POWER vs THROUGHPUT (2 gig)

Random 8 Block Reads

	1.800						18.00
	1.600						16.00
	1.400						14.00
Amperes	1.200						12.00
	1.000						10.00

	0.800						8.00
	0.600						6.00
	0.400						4.00
	0.0	50.0	100.0	150.0	200.0	250.0	300.0

I/Os per Second

5Vo lt A

12 Vo lt A Watts

Power (watts)

Figure 10. ST373307FC DC current and power vs. input/output operations per second

Note. Values shown are for operation at 2Gb, for operation at 1Gb, reduce the +5V by.10Amps. The +12V current values are not affected by loop speed.

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Contents Page Page Page Page Revision status summary sheet Revision Date Writer/Engineer Sheets AffectedPage Contents Seagate Technology support services Defect and error managementInstallation Interface requirementsList of Figures Cheetah 10K.6 FC Product Manual, Rev. B ViiPage Scope Cheetah 10K.6 FC family disc driveCheetah 10K.6 FC Product Manual, Rev. B Applicable standards and reference documentation Taiwanese Bsmi Australian C-TickKorean MIC Reference documentsGeneral description Cheetah 10K.6 FC disc drivePerformance Standard featuresMedia description ReliabilityUser-installed accessories Factory-installed accessoriesFactory-installed options Unformatted and formatted capacitiesCheetah 10K.6 FC Product Manual, Rev. B Seek performance characteristics Access time Performance characteristicsInternal drive characteristics Format command execution time in minutesPrefetch/multi-segmented cache control General performance characteristicsStart/stop time Cache operationCaching write data Prefetch operation Reliability specifications Service life Reliability and servicePreventive maintenance Service philosophyControlling S.M.A.R.T 7 S.M.A.R.TPerformance impact Determining rate MillisecondsReporting control Predictive failuresInvoking DST State of the drive prior to testingImplementation Short and extended testsAbort Product warrantyLog page entries ShippingDC power requirements Physical/electrical specificationsAC power requirements General DC power requirement notesCurrent profiles Power sequencingConducted noise immunity +5V +12V Typical ST373307FC drive +12V current profile Typical ST3146807FC drive +5V current profile Typical ST373307FC drive +5V current profile Power dissipation ST3146807FC ST373307FCTemperature Cheetah 10K.6 FC Product Manual, Rev. B ST336607FCShock and vibration Relative humidityEffective altitude sea level ShockPackage size Packaged/product weight Drop height Recommended mounting Cheetah 10K.6 FC Product Manual, Rev. B Vibration Air cleanlinessAcoustics Mechanical specifications Mounting configuration dimensionsDrive internal defects/errors Defect and error managementDrive error recovery procedures Read and write retry count maximum recovery times Read retry Maximum recovery time per Write retryFC-AL system errors Maximum recovery time perDrive ID/option selection InstallationLED connections Drive orientation 1 J6 connector requirementsDrive Front CoolingDrive mounting Air flowGrounding Interface requirements FC-AL featuresFibre Channel link service frames Fibre Channel task management functionsFibre Channel port login NPort login Plogi payload BytesNPort Login Accept ACC payload Bytes Fibre Channel Process LoginFibre Channel Process Login Accept Process Login Plri payloadFibre Channel fabric login Fabric Login Flogi payload BytesFabric Login Accept ACC payload Bytes Accept or NPort Login when sending frames to an initiatorFC-AL options supported Fibre Channel Arbitrated Loop optionsDual port support Option SupportedSupported commands Command code Command name Supported commands Command code Supported Command nameRead descriptor mode Cheetah 10K.6 FC Product Manual, Rev. B Cheetah 10K.6 FC inquiry data Mode Sense dataCheetah 10K.6 FC Product Manual, Rev. B Inquiry data Bytes Data hexCheetah 10K.6 FC Product Manual, Rev. B DEF DEF CHG Cheetah 10K.6 FC Product Manual, Rev. B Supported Feature or condition Miscellaneous operating features and conditionsMiscellaneous features Miscellaneous statusPhysical characteristics Physical descriptionConnector requirements Part description Positions Part number FeaturesPin descriptions Pin Signal name Signal typeFC-SCA pin descriptions FC-AL transmitters and receivers PowerFault LED Out Active LED OutMotor start controls Enable port bypass signals11 SEL6 through SEL0 ID lines Parallel Enclosure Services Interface ESI Setting Hex Dec SettingArbitrated loop physical address Alpa values LED driver signals Signal characteristicsTTL input characteristics Device control codesTransmit eye diagram Differential Pecl inputEye diagram data values Link rate GHzPresales Support Seagate Technology support services Online ServicesAutomated Services Technical SupportUSA/Canada/Latin America Support Services Customer Service CSOEuropean Support Services Asia/Pacific Support Services Africa/Middle East Support ServicesCall Center Toll-free Direct dial Cheetah 10K.6 FC Product Manual, Rev. B Index FC-AL Cheetah 10K.6 FC Product Manual, Rev. B Plogi Cheetah 10K.6 FC Product Manual, Rev. B Cheetah 10K.6 FC Product Manual, Rev. B

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