IBM SSA manual Volt current during read/write operations C1x Models

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U S E R RESPONSIBLE F O R V E R I F Y I N G VERSION A N D COMPLETENESS

O E M F U N C T I O N A L S P E C I F I C A T I O N U L T R A S T A R X P ( D F H C ) SSA M O D E L S 1.12/2.25 G B - 1.0" H I G H

Figure 1. 5 volt current during read/write operations — C1x Models

1.Read/write baseline voltage.

2.Read/write pulse. The width of the pulse is proportional to the number of consecutive blocks read or written. The 5 volt supply must be able to provide the required current during this event.

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I B M Corporation

Source filename=POWER

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Contents Form Factor Disk Drive Version BM Corporation Preface Source filename=STSSHEXT When Reliability Operating LimitsContaminants Acoustic Levels Source filename=STSSHEXT Interface Controller Features FeaturesGeneral Features DescriptionReliability Features ModelsSpecifications GeneralUser bytes/logical block ub/lba User bytes/sector ub/sctSectors/logical block sct/lba Sectors/track sct/trkCapacity Equations For Each NotchFor Entire Drive Input Voltage + 5 Volts Supply Power Requirements by Model1 C1x Models + 1 2 Volts SupplyPower Calculation Examples Example 3. Power CalculationExample 1. Calculate the mean 12 volt average current Things to check when measuring 12 V supply current Example 4. Calculate the 12 volt peak currentVolt current during read/write operations C1x Models Typical 12 volt current C1x Models Typical 12 volt spin-up current C1x Models 2 C2x Models Power Calculation Examples Example 4. Calculate the 12 volt peak current Volt current during read/write operations C2x Models Typical 12 volt current C2x Models Typical 12 volt spin-up current C2x Models 3 C4x Models Power Calculation Examples Example 4. Calculate the 12 volt peak current Volt current during read/write operations C4x Models Typical 12 volt current C4x Models Typical 12 volt spin-up current C4x Models Power supply methods CxB Models4.2 DC/DC Converter Grounding Requirements of the Disk Enclosure Hot plug/unplug supportM Corporation Bring-up Sequence and Stop Times Event Nominal MaximumBring-up Sequence Times and Stop Time for C2x Models Source filename=PERFORM Workload Definition PerformanceEnvironment Definition # of segments Ub/lba +Random Command Execution TimeSequential Basic Component DescriptionsData Transfer to/from Disk Comments Data Transfer to/from SSA LinkApproximating Performance for Different Environments Theoretical Data Sector Transfer RateWhen Adaptive Caching is Enabled When Read Caching is EnabledWhen Write Caching is Enabled When Read-ahead is EnabledReordered Commands When No Seek is RequiredFor Queued Commands Back-To-Back CommandsSkew Cylinder to Cylinder SkewTrack to Track Skew Idle Time Functions Predictive Failure Analysis Servo Run Out MeasurementsServo Bias Measurements Channel CalibrationCommand Timeout Limits Save Logs and PointersDisk Sweep M Corporation Small Form Factor Models CxC Weight and DimensionsMechanical ClearancesDimensions are in millimeters Location of Side Mounting Holes of C4C Models Source filename=MECHANIC Unitized Connector Locations Source filename=MECHANIC Carrier Models CxB Dimensions CxB Models M Corporation Handle Docking and Ejection System Auto-docking Assembly Side Rails Side Rail Positioning Electrical Connector and Indicator Locations E D Locations front view CxB Models M CorporationSSA Unitized Connector Electrical InterfaceCarrier Connector PinRow SSA Link Electrical Characteristics Option Pins and IndicatorsSSA Link Cable Write Protect Option Port Pin Device Activity Pin/Indicator Option Port PinDevice Fault Pin/Indicator Option Port Pin Ground long Option Port Pin12 12V Charge and 5V Charge Power Port pin 1 Front Jumper ConnectorEarly Power Off Warning or Power Fail Power Port Pin Programmable pin 1 Option Port PinSpindle Synchronization Over Sync Hard-wire M Corporation Source filename=RELIABLE Power On Hours Examples Error DetectionSeek Error Rate ReliabilityMaximum on/off cycles Power on/off cyclesUseful Life Product LifeSpql Shipped product quality level Install Defect FreeMean Time Between Failure *MTBF Sample Failure Rate ProjectionsInstall Defect Free percentage Percent Periodic MaintenanceConnector Insertion Cycles ESD ProtectionTemperature Measurement Points Operating LimitsMaximum Reliability P F E TTemperature Measurement Points for all Models bottom view Vibration and ShockDrive Mounting Guidelines Output Vibration LimitsOperating Vibration Nonoperating Vibration V4SContaminants Operating ShockNonoperating Shock Upper Limit Sound Power Requirements Bels for C4x Models Acoustic LevelsSource filename=STANDARD Safety StandardsElectromagnetic Compatibility EMC M Corporation Bibliography Serial Storage Architecture S S a P H Transport