Seagate ST3450856SS, ST3146356SS manual Physical/electrical specifications, AC power requirements

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6.0Physical/electrical specifications

This section provides information relating to the physical and electrical characteristics of the drive.

6.1AC power requirements

None.

6.2DC power requirements

The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive connector.

Table 2: ST3450856SS DC power requirements

							ST3450856SS		ST3450856SS
							1.5 Gbit mode		3 Gbit mode

						Notes	(Amps)	(Amps)	(Amps)	(Amps)

Voltage							+5V	+12V [2]	+5V	+12V [2]

Regulation						[5]	±5%	±5% [2]	±5%	±5% [2]

						[1] [7]	0.57	0.82	0.59	0.81
Avg idle current DCX						[1] [7]	0.57	0.82	0.59	0.81
Maximum starting current
Maximum starting current
(peak DC) DC					3σ	[3]	0.92	1.95	0.84	1.95
(peak AC) AC					3σ	[3]	1.17	4.58	1.16	4.56
					3σ
Delayed motor start (max) DC					3σ	[1] [4]	0.58	0.03	0.60	0.03
Peak operating current:
Peak operating current:
					[1][6]	[1]	0.62	1.23	0.64	1.22
Typical DCX					[1][6]	[1]	0.62	1.23	0.64	1.22
Maximum DC					3σ	[1]	0.64	1.24	0.65	1.23
Maximum (peak) DC					3σ		1.16	2.76	1.18	2.86

Cheetah 15K.6 SAS Product Manual, Rev. A

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Contents ST3450856SS ST3300656SS ST3146356SS Cheetah 15K.6 SASPage Contents Installation Defect and error managementSeagate Technology support services Interface requirementsCheetah 15K.6 SAS disk drive List of FiguresCheetah 15K.6 SAS Product Manual, Rev. a Cheetah 15K.6 SAS disk drive ScopeCheetah 15K.6 SAS Product Manual, Rev. a Standards Standards, compliance and reference documentsElectromagnetic compatibility Electromagnetic susceptibilityEuropean Union Restriction of Hazardous Substances RoHS ComplianceReference documents Cheetah 15K.6 SAS Product Manual, Rev. a General description Performance Standard featuresMedia description Options factory installed Factory-installed accessoriesReliability Formatted capacitiesCheetah 15K.6 SAS Product Manual, Rev. a Internal drive characteristics Performance characteristicsAccess time Seek timeStart/stop time Format command execution time minutesGeneral performance characteristics Cache operation Prefetch/multi-segmented cache controlPrefetch operation Caching write dataError rates Reliability specificationsRecoverable Errors Unrecoverable ErrorsSeek errors Reliability and serviceInterface errors Preventive maintenanceControlling S.M.A.R.T 4 S.M.A.R.TPerformance impact MillisecondsDetermining rate Reporting controlPredictive failures Thermal monitorPrimary Temperature Temperature Log Page 0DhReference Temperature Parameter Code DescriptionInvoking DST State of the drive prior to testingShort and extended tests Short test Function Code 001bAbort Product warrantyShipping Product repair and return informationCheetah 15K.6 SAS Product Manual, Rev. a AC power requirements Physical/electrical specificationsDC power requirements ST3450856SS DC power requirementsST3146356SS DC power requirements ST3300656SS DC power requirementsST3300656SS Gbit mode Amps ST3146356SS Gbit mode AmpsPower sequencing General DC power requirement notesConducted noise immunity Current profilesTypical ST3450856SS current profiles Typical ST3300656SS current profiles Typical ST3146356SS current profiles ST3450856SS in 3 Gbit operation Power dissipationST3300656SS in 3 Gbit operation ST3300656SS CURRENT/POWER vs Throughput SAS 3.0GBRandom 8 Block Reads ST3146356SS CURRENT/POWER vs Throughput SAS 3.0GBST3146356SS in 3 Gbit operation Environmental limits TemperatureEffective altitude sea level Relative humidityShock and vibration ShockRecommended mounting Package size Packaged/product weight Drop heightVibration Air cleanlinessAcoustics Corrosive environmentMechanical specifications Physical dimensions Cheetah 15K.6 SAS Product Manual, Rev. a Drive error recovery procedures Defect and error managementDrive internal defects/errors 51.87 Media Pre-Scan SAS system errorsBackground Media Scan Idle Read After Write Deferred Auto-ReallocationDrive orientation InstallationAir flow CoolingGrounding Drive mountingCheetah 15K.6 SAS Product Manual, Rev. a Interface requirements SAS featuresDual port support Command name Command code Supported Scsi commands supportedCommands supported by Cheetah 15K.6 SAS family drives Commands supported by Cheetah 15K.6 SAS family drives Commands supported by Cheetah 15K.6 SAS family drives Commands supported by Cheetah 15K.6 SAS family drives Bytes Data hex Mode Sense dataInquiry data Page Mode Pages 2.1 ST3450856SS Mode Sense data2.2 ST3300656SS Mode Sense data 2.3 ST3146356SS Mode Sense data Miscellaneous features Miscellaneous operating features and conditionsSupported Feature or condition Miscellaneous statusSAS physical interface Datum B Connector requirements Physical characteristicsElectrical description Pin Signal name Signal typePin descriptions SAS pin descriptionsPower Signal characteristicsSAS transmitters and receivers Ready LED OutDifferential signals LED drive signalGeneral interface characteristics Eye masks Eye masks overviewJitter tolerance masks Receive eye maskAbsolute amplitude Normalized time in UISinusoidal Peak-toJitter Frequency in kHzSignal characteristica Units Gbps Transmitter signal characteristicsSignal characteristic Units Gbps Receiver signal characteristicsMaximum allowable jitter Gbps m, n Deterministic jitterqReceiver jitter tolerance Impedance specificationsCompliant jitter test pattern Cjtpat Impedance requirements Sheet 1Electrical TxRx connections Transmitter characteristicsImpedance requirements Sheet 2 = -5,437dB Shows the zero-length test load Receiver characteristics Cheetah 15K.6 SAS Product Manual, Rev. a Internet Seagate Technology support servicesPresales Support Technical SupportData Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Numerics IndexPage SAS See also cooling