Seagate ST3450802SS manual Power dissipation, ST3600002SS

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7.3Power dissipation

ST3600002SS

Typical power dissipation under idle conditions in 6Gb operation is 10.03W (34.23 BTUs per hour) To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 3). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.

Figure 3. ST3600002SS (6 Gb) DC current and power vs. input/output operations per second

ST3450802SS

Typical power dissipation under idle conditions in 6Gb operation is 9.57W (32.66 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 3). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.

Figure 4. ST3450802SS (6 Gb) DC current and power vs. input/output operations per second

24	Cheetah NS 10K.2 SAS Product Manual, Rev. F

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Contents Cheetah NS 10K.2 SAS ST3600002SS ST3450802SSPage Contents Installation Defect and error managementInterface requirements Seagate Technology support services Seagate Online Support and ServicesScope Standards, compliance and reference documents StandardsElectromagnetic compatibility Electromagnetic susceptibilityCompliance Reference documents General description Standard features Media descriptionPerformance ReliabilityFormatted capacities Factory-installed optionsProgrammable drive capacity Performance characteristics Internal drive characteristicsAccess time Seek performanceGeneral performance characteristics Format command execution time minutesStart/stop time Cache operation Prefetch/multi-segmented cache controlCaching write data Prefetch operation Reliability specifications Error ratesRecoverable Errors Unrecoverable ErrorsReliability and service Interface errorsPreventive maintenance Hot plugging the drive4 S.M.A.R.T Controlling S.M.A.R.TPerformance impact Reporting controlTemperature Log Page 0Dh Parameter Code Description Predictive failuresThermal monitor Drive Self Test DSTDST failure definition ImplementationShort test Function Code 001b Product warrantyExtended test Function Code 010b Shipping Physical/electrical specifications AC power requirementsDC power requirements ST3600002SS DC power requirementsST3450802SS DC power requirements General DC power requirement notesConducted noise immunity Power sequencingCurrent profiles Typical ST3600002SS drive +5V and +12V current profiles ST3600002SS Power dissipationST3450802SS Temperature a. Operating Environmental limitsRelative humidity Effective altitude sea level a. OperatingShock and vibration ShockRecommended mounting Air cleanliness Vibration a. Operating-normalAcoustics Corrosive environmentChina Restriction of Hazardous Substances RoHS Directive Mechanical specifications Physical dimensionsDrive internal defects/errors Defect and error managementDrive error recovery procedures 77.81 SAS system errors Background Media ScanMedia Pre-Scan Deferred Auto-ReallocationIdle Read After Write Installation Drive orientationCooling Air flowDrive mounting GroundingSAS features Interface requirementsDual port support Scsi commands supported Commands supported by Cheetah NS 10K.2 SAS family drivesCommands supported by Cheetah NS 10K.2 SAS family drives Commands supported by Cheetah NS 10K.2 SAS family drives Commands supported by Cheetah NS 10K.2 SAS family drives Inquiry data 10.3.2Mode Sense dataPage 10.3.2.1 ST3600002SS Mode Sense data Mode Pages10.3.2.2 ST3450802SS Mode Sense data Miscellaneous features Miscellaneous operating features and conditionsMiscellaneous status SAS physical interface Datum B Physical characteristics Connector requirementsPin descriptions Electrical descriptionSAS pin descriptions Signal characteristics PowerSAS transmitters and receivers Ready LED OutLED drive signal Differential signalsGeneral interface characteristics 10.5.2.1 Eye masks 10.5.2.1.1 Eye masks overviewReceive eye mask 2OP 0, 5 xadditional sinusoidal jitter X 1OP Transmitter signal characteristics Receiver signal characteristics Maximum allowable jitterCompliant jitter test pattern Cjtpat Impedance requirements Sheet 1Impedance requirements Sheet 2 Electrical TxRx connections= -5, 437dB Shows the zero-length test load Receiver characteristics SAS-2 Specification complianceAdditional information Cheetah NS 10K.2 SAS Product Manual, Rev. F Index Page SAS See also cooling Page Seagate Technology LLC Americas

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