Seagate ST400FX0012, ST100FX0002 General DC power requirement notes, Conducted noise immunity

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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 start, are measured after a 10-minute warm up.

7.3.1Conducted noise immunity

Noise is specified as a periodic and random distribution of frequencies covering a defined frequency. 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	=	450 mV pp from 100 Hz to 100 KHz.
		250 mV pp from 100 KHz to 20 MHz.
		150 mV pp from 20 MHz to 80 MHz.

7.3.2Power sequencing

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

7.3.3Current profiles

The +12V and +5V current profiles for the Pulsar 10K.4 drives are shown below.

Figure 1. Current profiles for 400GB models

26	Pulsar XT.2 SAS Product Manual, Rev. B

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Contents ST400FX0002ST400FX0012 ST200FX0002 ST100FX0002 Standard Models Self-Encrypting Drive ModelsRevision history Contents Installation Physical/electrical specificationsDefect and error management About self-encrypting drivesPage Pulsar XT.2 SAS Product Manual, Rev. B List of Figures Page Seagate Technology support services Seagate Online Support and ServicesScope Electromagnetic compatibility Applicable standards and reference documentationStandards Electromagnetic susceptibilityAustralian C-Tick Electromagnetic complianceElectromagnetic compliance for the European Union Korean KCCReference documents China Restriction of Hazardous Substances RoHS DirectiveStandard features General descriptionPerformance Media descriptionReliability Formatted capacities Factory-installed optionsProgrammable drive capacity Thin Provisioning Drive Configuration Performance characteristics Performance characteristicsInternal drive characteristics Access timeFormat Mode Dcrt Bit IP Bit 400GB 200GB 100GB PerformanceCache control Start/stop timeCaching write data Reliability specifications Error ratesEndurance Management Data Retention Reliability and servicePreventive maintenance Lifetime Endurance ManagementControlling S.M.A.R.T Maximum processing delay Fully-enabled delay4 S.M.A.R.T Performance impactPredictive failures Thermal monitorDST failure definition State of the drive prior to testingDrive Self Test DST ImplementationExtended test Function Code 010b Short and extended testsShort test Function Code 001b Log page entriesProduct repair and return information Product warrantyShipping StoragePower specifications Physical/electrical specificationsAC power requirements DC power requirements 400GB standard model DC power requirements200GB standard model DC power requirements 100GB standard model DC power requirements Conducted noise immunity General DC power requirement notesPower sequencing Current profilesCurrent profiles for 200GB models 400GB models in 6Gb operation Power dissipation200GB models in 6Gb operation Environmental limits Temperature a. Operating100GB models in 6Gb operation Effective altitude sea level a. Operating Relative humidityShock and vibration Shock Recommended mountingVibration a. Operating-normal Air cleanlinessCorrosive environment Mechanical specifications Mounting configuration dimensions 400GB modelsWeight Pounds 100 grams About self-encrypting drives Controlled accessAdmin SP Data encryptionDrive locking Default passwordRandom number generator RNG Data bandsSupported commands Authenticated firmware downloadPower requirements Cryptographic eraseDrive internal defects/errors Defect and error managementSSD Physical format address descriptor Bit Byte Background Media Scan Drive error recovery proceduresSAS system errors Auto-ReallocationLevels of PI Setting and determining the current Type LevelProtection Information PI Identifying a Protection Information driveInstallation Drive orientationCooling Air flowDrive mounting GroundingSAS features Interface requirementsDual port support Scsi commands supported Supported commandsPersistent Reserve Read Capacity Write Mode Sense data Inquiry dataPage Mode Sense data for 400GB drives 14 1a 00 1aMode Sense data for 200GB drives Mode PagesMode Sense values for 100GB drives Miscellaneous status Miscellaneous operating features and conditionsMiscellaneous features SAS physical interfaceDatum B Section C C Section a a Electrical description Physical characteristicsConnector requirements Pin descriptionsSAS transmitters and receivers Signal characteristicsPower Ready LED OutDifferential signals SAS-2 Specification complianceLED drive signal General interface characteristicsIndex NumericsPage RNG See also cooling Page Seagate Technology LLC Americas