Seagate ST3500071FC, ST3400071FC manual Power dissipation

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6.3Power dissipation

Typical power dissipation under idle conditions is 10.49 watts (35.79 BTUs per hour) during 1 Gbit operation. Typical power dissipation under idle conditions is 10.75 watts (36.68 BTUs per hour) during 2 Gbit operation.

To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 2). 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.

	ST3500001FC DC CURRENT/POWER vs THROUGHPUT (1Gb) Random 8 Block Reads
	1.800									18.00	5Volt A
											5Volt A
	1.600									16.00	12 Volt A
	1.600									16.00	Watts
											Watts
	1.400									14.00
	1.200									12.00	Power (watts)
Amperes	1.000									10.00
	0.800									8.00
	0.600									6.00
	0.600									6.00
	0.400									4.00
	0.200									2.00
	0.000									0.00
	0.0	20.0	40.0	60.0	80.0	100.0	120.0	140.0	160.0	180.0
					I/Os per Second

Figure 2. DC current and power vs. input/output operations per second (1 Gbit)

	ST3500001FC DC CURRENT/POWER vs THROUGHPUT (2Gb) Random 8 Block Reads
	1.800									18.00	5Volt A
											5Volt A
	1.600									16.00	12 Volt A
	1.600									16.00	Watts
											Watts
	1.400									14.00
	1.200									12.00	Power (watts)
Amperes	1.000									10.00
	0.800									8.00
	0.600									6.00
	0.600									6.00
	0.400									4.00
	0.200									2.00
	0.000									0.00
	0.0	20.0	40.0	60.0	80.0	100.0	120.0	140.0	160.0	180.0
					I/Os per Second

Figure 3. DC current and power vs. input/output operations per second (2 Gbit)

NL35 Series FC Product Manual, Rev. D

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Contents ST3500071FC ST3400071FC NL35 Series FCPage Contents Interface requirements Defect and error managementInstallation Seagate Technology support services NL35 Series FC Product Manual, Rev. D NL35 Series family disc drive List of FiguresViii NL35 Series FC Product Manual, Rev. D NL35 Series family disc drive ScopeNL35 Series FC Product Manual, Rev. D Electromagnetic susceptibility Applicable standards and reference documentationStandards Electromagnetic compatibilityEnvironmental protection Electromagnetic complianceFibre Channel Interface Manual Reference documentsNL35 Series FC Product Manual, Rev. D General description Standard features Formatted capacities Media descriptionPerformance ReliabilityProgrammable drive capacity Factory-installed accessoriesFactory-installed options User-installed accessoriesAccess time Performance characteristicsInternal drive characteristics Seek performance characteristicsGHz Generalized performance characteristicsCache operation Start/stop timePrefetch/multi-segmented cache control Prefetch operation Caching write dataPage NL35 Series FC Product Manual, Rev. D Error rates Reliability specificationsSeek errors Reliability and serviceRecoverable Errors Unrecoverable errorsHot plugging the drive Preventive maintenanceMean Time Between Failure Mtbf Milliseconds 4 S.M.A.R.TControlling S.M.A.R.T Performance impactParameter Code Description Temperature Log page 0DhPredictive failures Thermal monitorImplementation State of the drive prior to testingDrive Self Test DST DST Failure DefinitionExtended test Function Code 010b Invoking DSTShort and extended tests Short test Function Code 001bProduct repair and return information Product warrantyAbort ShippingST3500071FC/ST3400071FC DC power requirements Physical/electrical specificationsAC power requirements DC power requirementsConducted noise immunity General DC power requirement notesPower sequencing Power dissipation Effective altitude sea level TemperatureEnvironmental limits Relative humidityShock Package size Packaged/product weight Drop heightShock and vibration Recommended mounting Vibration Air cleanlinessAcoustics Typical idle mode sound power ST3500071FC and ST3400071FCCorrosive environment Mounting configuration dimensions Mechanical specificationsNL35 Series FC Product Manual, Rev. D Drive error recovery procedures Defect and error managementDrive internal defects/errors 108.3 Media Pre-Scan FC-AL system errorsBackground Media Scan NL35 Series FC Product Manual, Rev. D Drive orientation InstallationDrive ID/option selection Air flow CoolingGrounding Drive mountingNL35 Series FC Product Manual, Rev. D Type of frame Link service FC-AL featuresFibre Channel link service frames Link services supportedFC Scsi FCP response codes Fibre Channel task management functionsFibre Channel Scsi FCP task management functions Fibre Channel task management responsesBytes Fibre Channel port loginNPort login Plogi payload Process Login Plri payload Fibre Channel port login acceptNPort Login Accept ACC payload Fibre Channel Process LoginFabric Login Flogi payload Fibre Channel Process Login AcceptProcess Login Accept ACC payload Fibre Channel fabric loginFabric Login Accept ACC payload Fibre Channel fabric accept loginOption Supported Dual port supportFibre Channel Arbitrated Loop options FC-AL options supportedCommand code Supported Command name Scsi commands supportedSupported commands Supported commands Supported commands Supported commands Supported commands Bytes Data hex Mode Sense dataInquiry data NL35 Series inquiry dataPage DEF CHG NL35 Series FC Product Manual, Rev. D Miscellaneous status Miscellaneous operating features and conditionsMiscellaneous features Supported Feature or conditionPhysical description Physical characteristicsFC-AL physical interface Electrical description Connector requirementsPart description Positions Part number Features FC-SCA pin descriptions Pin Signal name Signal typePin descriptions FC-AL transmitters and receivers PowerFault LED Out Active LED Out conditions Enable port bypass signalsNormal command activity LED status Active LED Out11 SEL6 through SEL0 ID lines Motor start control signalsParallel Enclosure Services Interface ESI Motor start controlsHex Dec SettingArbitrated loop physical address Alpa values Signal characteristics Differential Pecl input characteristics LED driver signalsLED drive signal Differential Pecl output characteristicsLink rate GHz Eye diagram data valuesNL35 Series FC Product Manual, Rev. D Technical Support Seagate Technology support servicesInternet Presales SupportData Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Numerics IndexFAN Flogi Plogi Page See also cooling