Seagate ST936751FC manual Power dissipation, ST973451FC

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6.3Power dissipation

ST973451FC

Typical power dissipation under idle conditions in 1Gb operation is 5.58 watts (19.04 BTUs per hour). Typical power dissipation under idle conditions in 2Gb operation is 5.58 watts (19.04 BTUs per hour). Typical power dissipation under idle conditions in 4Gb operation is 5.88 watts (20.06 BTUs per hour).

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.

CURRENT/POWER vs THROUGHPUT (FC - 1GB)

Random 8 Block Reads

	1.400								14.00	5Volt A
										5Volt A
										12 Volt A
	1.200								12.00	Watts
										Watts
	1.000								10.00
Amperes	0.800								8.00	ower (watts)
Amperes	0.600								6.00	ower (watts)
	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	350.0	400.0

I/Os per Second

Figure 4. ST973451FC DC current and power vs. input/output operations per second at 1 Gbit

CURRENT/POWER vs THROUGHPUT (FC - 2GB)

Random 8 Block Reads

	1.400								14.00	5Volt A
										5Volt A
										12 Volt A
	1.200								12.00	Watts
										Watts
	1.000								10.00
Amperes	0.800								8.00	ower (watts)
Amperes	0.600								6.00	ower (watts)
	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	350.0	400.0

I/Os per Second

Figure 5. ST973451FC DC current and power vs. input/output operations per second at 2 Gbit

Savvio 15K.1 FC Product Manual, Rev. B

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Contents ST973451FC ST936751FC Savvio 15K.1 FCPage Contents Interface requirements Physical/electrical specificationsDefect and error management InstallationSeagate Technology support services Savvio 15K.1 FC Product Manual, Rev. B List of Figures Page Savvio 15K.1 family disc drive ScopeSavvio 15K.1 FC Product Manual, Rev. B Electromagnetic susceptibility Applicable standards and reference documentationStandards Electromagnetic compatibilityEuropean Union Restriction of Hazardous Substances RoHS Ncits TR-19 Reference documentsSavvio 15K.1 FC Product Manual, Rev. B General description Standard features Formatted capacities Media descriptionPerformance ReliabilityProgrammable drive capacity Factory-installed accessoriesOptions Access time Performance characteristicsInternal drive characteristics Seek performance characteristicsStart/stop time Format command execution timeGeneral performance characteristics Caching write data Prefetch/multi-segmented cache controlCache operation Prefetch operation Recoverable Errors Reliability specificationsError rates Interface errors Reliability and serviceUnrecoverable Errors Seek errorsControlling S.M.A.R.T Hot plugging the drive4 S.M.A.R.T Predictive failures Performance impactReporting control Determining rateDST failure definition Temperature Log Page 0DhParameter Code Description Drive Self Test DSTShort and extended tests State of the drive prior to testingImplementation Invoking DSTShipping Product warrantyLog page entries AbortProduct repair and return information DC power requirements Physical/electrical specificationsAC power requirements General DC power requirement notes +5V +12V Power sequencingConducted noise immunity Current profilesTypical ST936751FC drive +12V and +5V current profiles ST973451FC Power dissipationCURRENT/POWER vs Throughput FC 1GB Random 8 Block Reads CURRENT/POWER vs Throughput FC 4GB Random 8 Block Reads ST936751FC FC CURRENT/POWER vs Throughput FC 1GB Random 8 Block ReadsEnvironmental limits TemperatureFC CURRENT/POWER vs Throughput FC 4GB Random 8 Block Reads Shock Relative humidityEffective altitude sea level Shock and vibrationPackage size Packaged/product weight Drop height Recommended mounting Corrosive environment Air cleanlinessVibration Acoustics Drive dimensions inches Mechanical specificationsDrive error recovery procedures Defect and error managementDrive internal defects/errors FC-AL system errors Deferred Auto-Reallocation Background Media ScanMedia Pre-Scan Idle Read After Write Cooling InstallationDrive orientation Grounding Drive mountingInterface requirements FC-AL featuresFibre Channel link service frames Link services supported Type of frameTask name Supported Fibre Channel task management functionsFibre Channel task management responses Fibre Channel Scsi FCP task management functionsNPort login Plogi payload Bytes Fibre Channel port loginProcess Login Plri payload Fibre Channel port login acceptFibre Channel Process Login NPort Login Accept ACC payload BytesFabric 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 loginOption Supported Dual port supportFibre Channel Arbitrated Loop options FC-AL options supportedSupported commands Command code Command name Scsi commands supportedDisconnect/reconnect control page 02h Savvio 15K.1 FC Product Manual, Rev. B LBdata Supported commands Command code Supported 4 Command name Savvio inquiry data Bytes Data hex Inquiry dataMiscellaneous 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 Pin descriptions FC-SCA pin descriptions Pin Signal name Signal typePin Signal name Signal type FC-AL transmitters and receivers PowerFault LED Out Motor start controls Enable port bypass signalsActive LED Out 11 SEL6 through SEL0 ID lines Parallel Enclosure Services Interface ESIHex Dec SettingArbitrated loop physical address Alpa values Device control codes Signal characteristicsTTL input characteristics Differential Pecl input Differential Pecl outputSavvio 15K.1 FC Product Manual, Rev. B 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 Page Plogi SEL ID See also cooling