Seagate ST3400755SS 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: ST3400755SS DC power requirements

							ST3400755SS		ST3400755SS
							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] [6]	0.76	0.37	0.75	0.37
Avg idle current DCX						[1] [6]	0.76	0.37	0.75	0.37
Maximum starting current
Maximum starting current
(peak DC) DC					3σ	[3]	0.89	1.73	0.88	1.73
(peak AC) AC					3σ	[3]	1.10	3.43	1.14	3.40
					3σ
Delayed motor start (max) DC					3σ	[1] [4]	0.63	0.04	0.67	0.04
Peak operating current:
Peak operating current:
						[1]	0.75	0.69	0.78	0.68
Typical DCX						[1]	0.75	0.69	0.78	0.68
Maximum DC					3σ	[1]	0.78	0.74	0.81	0.74
Maximum (peak) DC					3σ		1.38	2.64	1.40	2.58

[1]Measured with average reading DC ammeter or equivalent sampling scope. Instantaneous +12V current peaks will exceed these values. Power supply at nominal voltage. N (number of drives tested) = 6, 35 Degrees C ambient.

[2]For +12 V, a –10% tolerance is allowed during initial spindle start but must return to ±5% before reaching 10,000 RPM. The ±5% must be maintained after the drive signifies that its power-up sequence has been completed and that the drive is able to accept selection by the host initiator.

[3]See +12V current profile in Figure 19.

[4]This condition occurs after OOB and Speed Negotiation completes but before the drive has received the Notify Spinup primitive.

Cheetah NS SAS Product Manual, Rev. B

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Contents

ST3400755SS Cheetah NS SASPage Contents Installation Defect and error managementSeagate Technology support services Interface requirementsTypical ST3400755SS drive +5V and +12V current profiles List of FiguresCheetah NS SAS Product Manual, Rev. B Scope Cheetah NS SAS Product Manual, Rev. B Standards Standards, compliance and reference documentsElectromagnetic compatibility Electromagnetic susceptibilityCompliance Reference documents Cheetah NS SAS Product Manual, Rev. B General description Media description Standard featuresPerformance ReliabilityFormatted capacities Factory-installed optionsProgrammable drive capacity ST3400755SSCheetah NS SAS Product Manual, Rev. B Internal drive characteristics Performance characteristicsAccess time Seek performanceStart/stop time Format command execution time minutesGeneral performance characteristics Caching write data Prefetch/multi-segmented cache controlCache operation Prefetch operation Error 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 Reporting controlThermal monitor Temperature Log Page 0DhPredictive failures DST failure definition State of the drive prior to testing Implementation Invoking DSTShort test Function Code 001b Product warrantyExtended test Function Code 010b Log page entriesProduct repair and return information ShippingCheetah NS SAS Product Manual, Rev. B AC power requirements Physical/electrical specificationsDC power requirements ST3400755SS DC power requirementsPower sequencing General DC power requirement notesConducted noise immunity Current profilesTypical ST3400755SS drive +5V and +12V current profiles Power dissipationEnvironmental limits TemperatureEffective altitude sea level Relative humidityShock and vibration ShockRecommended mounting Package size Packaged/product weight Drop heightVibration Air cleanlinessAcoustics Corrosive environmentChina Restriction of Hazardous Substances RoHS Directive X表示该部件（于同类物品程度上）所含的危险和有毒物质中国RoHS MCV标准所定义的门槛值。Physical dimensions Mechanical specificationsCheetah NS SAS Product Manual, Rev. B Drive error recovery procedures Defect and error managementDrive internal defects/errors 77.87 Media Pre-Scan SAS system errorsBackground Media Scan Idle Read After Write Deferred Auto-ReallocationDrive orientation InstallationAir flow CoolingGrounding Drive mountingCheetah NS SAS Product Manual, Rev. B Interface requirements SAS featuresDual port support Command name Command code Supported Scsi commands supportedCommands supported by Cheetah NS SAS family drives Commands supported by Cheetah NS SAS family drives Commands supported by Cheetah NS SAS family drives Commands supported by Cheetah NS SAS family drives Cheetah NS SAS inquiry data Bytes Data hex Mode Sense dataInquiry data Page Mode Pages 2.1 ST3400755SS Mode Sense dataMiscellaneous 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 NS SAS Product Manual, Rev. B 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