Seagate ST336807FC manual Power dissipation

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6.3Power dissipation

ST336807FC

Typical power dissipation under idle conditions is 8.38 watts (28.60 BTUs per hour) during 1 Gbit operation. Typical power dissipation under idle conditions is 8.68 watts (29.62 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 4). 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.

		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	50.0	100.0	150.0	200.0	250.0	300.0
				I/Os per Second

		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	50.0	100.0	150.0	200.0	250.0	300.0
				I/Os per Second

Figure 4. ST336807FC DC current and power vs. input/output operations per second

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

Image 40

Contents Cheetah 10K.7 FC Page Cheetah 10K.7 FC Page Rev. a 05/04/05 All. Initial release Revision status summary sheetRevision 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 options Factory-installed accessoriesUser-installed accessories Internal drive characteristics Performance characteristicsST336807FC Seek performance characteristics Access timeFormat command execution time in minutes Generalized performance characteristicsPrefetch/multi-segmented cache control Start/stop timeCache operation Caching write data Prefetch operation Cheetah 10K.7 36GB FC Product Manual, Rev. a Error rates Reliability specificationsRecoverable Errors Reliability and service 4 S.M.A.R.T Hot plugging the driveControlling S.M.A.R.T Performance impact MillisecondsReporting control Determining rateParameter Code Description Temperature Log page 0DhDrive 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 requirementsPower sequencing General DC power requirement notesConducted 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 levelShock and vibration Package size Packaged/product weight Drop heightShock Recommended mounting Vibration Air cleanlinessCorrosive environment Mechanical specifications AcousticsMounting configuration dimensions Drive internal defects/errors Defect and error managementDrive error recovery procedures 77.7 Background Media Scan FC-AL system errorsMedia Pre-Scan Cheetah 10K.7 36GB FC Product Manual, Rev. a Installation Drive ID/option selectionLED connections Physical interface Drive FrontDrive orientation 1 J6 connector requirementsCooling 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 codesNPort login Plogi payload Fibre Channel port loginBytes 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 SupportedSupported commands Scsi commands supportedCommand 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 statusFC-AL physical interface Physical characteristicsPhysical description Connector requirements Part description Positions Part number FeaturesJ6 connector dimensions Electrical descriptionPin descriptions Pin Signal name Signal typeFC-SCA pin descriptions Fault LED Out PowerFC-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 linesArbitrated loop physical address Alpa values SettingHex 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 SupportData Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call center Presales and Technical Support Warranty Service FAX services-All Europe toll callToll-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