Seagate ST9500431SS, ST9500430SS General DC power requirement notes, Conducted noise immunity

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[5]See +12V current profile in Figure 1.

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

[7]See paragraph 7.3.1, "Conducted noise immunity." Specified voltage tolerance includes ripple, noise, and transient response.

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

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

General DC power requirement notes.

1.Minimum current loading for each supply voltage is not less than 1.7% of the maximum operating current shown.

2.The +5V and +12V supplies should employ separate ground returns.

3.Where power is provided to multiple drives from a common supply, careful consideration for individual drive power requirements should be noted. Where multiple units are powered on simultaneously, the peak starting current must be available to each device.

4.Parameters, other than spindle start, are measured after a 10-minute warm up.

5.No terminator power.

7.3.1Conducted noise immunity

Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz. Maximum allowed noise values given below are peak-to-peak measurements and apply at the drive power connector.

+5v	=	250 mV pp from 100 Hz to 20 MHz.
+12v	=	800 mV pp from 100 Hz to 8 KHz.
		450 mV pp from 8 KHz to 20 KHz.
		250 mV pp from 20 KHz to 5 MHz.

7.3.2Power sequencing

The drive does not require power sequencing. The drive protects against inadvertent writing during power-up and down.

24	Constellation SAS Product Manual, Rev. E

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Contents ST9500430SSST9500431SS ST9500432SSStandard Model Self-Encrypting Drive Model SED Fips 140-2 ModelRevision history Contents Defect and error management InstallationAbout Fips About self-encrypting drives Interface requirementsPower Constellation SAS Product Manual, Rev. E List of Figures GB model current profilesConstellation SAS Product Manual, Rev. E Seagate Technology support services Seagate Online Support and ServicesScope Applicable standards and reference documentation StandardsElectromagnetic compatibility Electromagnetic susceptibilityElectromagnetic compliance Electromagnetic compliance for the European UnionAustralian C-Tick Korean KCCReference documents European Union Restriction of Hazardous Substances RoHSGeneral description Standard features Media descriptionPerformance ReliabilityFormatted capacities Programmable drive capacityFactory-installed options Performance characteristics Internal drive characteristicsSeek performance characteristics Access timeGeneral performance characteristics Start/stop timePrefetch/multi-segmented cache control Cache operationCaching write data Prefetch operationReliability specifications Error ratesRecoverable Errors Unrecoverable ErrorsReliability and service Seek errorsInterface errors Preventive maintenance4 S.M.A.R.T Controlling S.M.A.R.TPerformance impact Reporting controlThermal monitor Temperature Log Page 0Dh Parameter Code DescriptionPredictive failures State of the drive prior to testing Drive Self Test DSTDST failure definition ImplementationShort and extended tests Short test Function Code 001bExtended test Function Code 010b Log page entriesProduct repair and return information Product warrantyShipping PowerChoice modes Physical/electrical specificationsPowerChoiceTM power management AC power requirements DC power requirementsPage Conducted noise immunity General DC power requirement notesPower sequencing Current profiles GB model current profilesPower dissipation ST9500430SS, ST9500431SS and ST9500432SS in 3 Gbit operationST9500430SS, ST9500431SS and ST9500432SS in 6 Gbit operation Temperature a. Operating Environmental limitsRelative humidity Effective altitude sea level a. OperatingShock and vibration ShockPage Recommended mounting Corrosive environment Air cleanlinessVibration a. Operating-normal Acoustics Mechanical specifications Mounting configuration dimensionsLevel 2 security About FipsPurpose Controlled access Admin SPAbout self-encrypting drives Data encryptionDefault password Random number generator RNGDrive locking Data bandsAuthenticated firmware download Power requirementsSupported commands Cryptographic eraseDrive error recovery procedures Defect and error managementDrive internal defects/errors SAS system errors Deferred Auto-Reallocation Background Media ScanMedia Pre-Scan Idle Read After Write Installation Drive orientationCooling Air flowDrive mounting GroundingSAS features Interface requirementsDual port support Scsi commands supported Supported commandsSupported commands Supported commands Supported commands Constellation inquiry data Mode Sense dataInquiry data Page Mode Data Header Miscellaneous status Miscellaneous operating features and conditionsMiscellaneous features SAS physical interface Datum B Section C C Section a a Physical characteristics Connector requirementsElectrical description Pin descriptionsSignal characteristics PowerSAS transmitters and receivers Ready LED OutSAS-2 Specification Compliance LED drive signalDifferential signals General interface characteristicsConstellation SAS Product Manual, Rev. E Index NumericsKCC Msid Mtbf See also cooling Page Constellation SAS Product Manual, Rev. E Page Seagate Technology LLC