Seagate ST973352SS, ST973452SS, ST973252SS, ST9146752SS manual 73GB models DC power requirements

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Table 3:	73GB models DC power requirements

				3.0 Gbit mode		6.0 Gbit mode

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

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

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

Avg idle current DC			[1] [7]	0.36	0.18	0.37	0.18

Maximum starting current
(peak DC) DC		3σ	[3]	0.51	1.09	0.51	1.08
(peak AC) AC		3σ	[3]	0.93	1.73	0.99	1.86

Delayed motor start (max) DC		3σ	[1] [4]	0.56	0.06	0.57	0.05

Peak operating current: (random read)
Typical DC			[1] [6]	0.45	0.36	0.46	0.36
Maximum DC		3σ	[1]	0.47	0.37	0.48	0.37
Maximum (peak) DC		3σ		1.16	1.16	1.14	1.16

Peak operating current: (random write)
Typical DC			[1]	0.52	0.28	0.53	0.28
Maximum DC		3σ	[1]	0.55	0.28	0.56	0.28
Maximum (peak) DC		3σ		1.14	1.18	1.16	1.20

Peak operating current: (sequential read)
Typical DC			[1]	0.88	0.18	0.89	0.18
Maximum DC		3σ	[1]	0.92	0.19	0.93	0.19
Maximum (peak) DC		3σ		1.18	0.40	1.20	0.42

Peak operating current: (sequential write)
Typical DC			[1]	0.88	0.18	0.89	0.18
Maximum DC		3σ	[1]	0.94	0.19	0.95	0.19
Maximum (peak) DC		3σ		1.16	0.40	1.18	0.40

[1]Measured with average reading DC ammeter. Instantaneous +12V current peaks will exceed these val- ues. 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 15k 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 1.

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

[5]See paragraph 7.2.1, "Conducted noise immunity." Specified voltage tolerance includes ripple, noise, and transient response.

[6]Operating condition is defined as random 8 block reads.

[7]During idle, the drive heads are relocated every 60 seconds to a random location within the band from three-quarters to maximum track.

Savvio 15K.2 SAS Product Manual, Rev. E

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Contents SED Fips 140-2 Models ST9146852SSST9146752SS ST973452SSST973352SSST9146652SS ST973252SS Standard Models Self-Encrypting Drive ModelsPage Contents Interface requirements Defect and error managementInstallation About Fips About self-encrypting drivesPage Savvio 15K.2 SAS Product Manual, Rev. E List of Figures Page Seagate Online Support and Services Seagate Technology support servicesScope Electromagnetic susceptibility Applicable standards and reference documentationStandards Electromagnetic compatibilityKorean MIC Electromagnetic complianceElectromagnetic compliance for the European Union Australian C-TickEuropean Union Restriction of Hazardous Substances RoHS Reference documentsGeneral description Media description Standard featuresReliability PerformanceFormatted capacities Options Programmable drive capacityAccess time Performance characteristicsInternal drive characteristics Seek performance characteristicsGeneral performance characteristics Format command execution timeStart/stop time Cache operation Prefetch/multi-segmented cache controlPrefetch operation Caching write dataUnrecoverable Errors Reliability specificationsError rates Recoverable ErrorsPreventive maintenance Reliability and serviceSeek errors Interface errorsReporting control 4 S.M.A.R.TControlling S.M.A.R.T Performance impactPredictive failures Temperature Log Page 0Dh Parameter Code DescriptionThermal monitor Implementation State of the drive prior to testingDrive Self Test DST DST failure definitionLog page entries Short and extended testsShort test Function Code 001b Extended test Function Code 010bShipping Product warrantyProduct repair and return information AC power requirements Physical/electrical specificationsDC power requirements Gbit mode Amps 146GB models DC power requirements73GB models DC power requirements Power sequencing General DC power requirement notesConducted noise immunity Current profile for 146GB models Current profilesCurrent profile for 73GB models 146GB models in 6.0 Gbit operation Power dissipation146GB models in 3.0 Gbit operation 73GB models in 3.0 Gbit operation 73GB models in 6.0 Gbit operationEnvironmental limits Temperature a. OperatingRelative humidity Shock and vibration Effective altitude sea level a. OperatingShock Recommended mounting Vibration a. Operating-normal Air cleanlinessCorrosive environment Acoustics Dimensions Mechanical specificationsPurpose About FipsLevel 2 security Data encryption Controlled accessAdmin SP About self-encrypting drivesData bands Default passwordRandom number generator RNG Drive lockingCryptographic erase Authenticated firmware downloadPower requirements Supported commandsDrive internal defects/errors Defect and error managementDrive error recovery procedures SAS system errors Media Pre-Scan Background Media ScanDeferred Auto-Reallocation Idle Read After Write Drive orientation InstallationAir flow CoolingGrounding Drive mountingInterface requirements SAS featuresDual port support Supported commands Scsi commands supportedSupported commands Supported commands Supported commands Inquiry data Mode Sense dataSavvio inquiry data Page Mode Data Header 00 00 05 12 8B 00 10 Miscellaneous features Miscellaneous operating features and conditionsMiscellaneous status SAS physical interface Datum B Section C C Section a a Pin descriptions Physical characteristicsConnector requirements Electrical descriptionSAS transmitters and receivers SAS pin descriptionsSignal characteristics General interface characteristics SAS-2 Specification complianceAdditional information Savvio 15K.2 SAS Product Manual, Rev. E Numerics IndexIraw Msid Mtbf See also cooling