Seagate ST9500432SS, ST9500430SS, ST9500431SS manual Cooling, Air flow

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11.2Cooling

Cabinet cooling must be designed by the customer so that the ambient temperature immediately surrounding the drive will not exceed temperature conditions specified in Section 7.5.1, "Temperature."

The rack, cabinet, or drawer environment for the drive must provide heat removal from the electronics and head and disc assembly (HDA). You should confirm that adequate heat removal is provided using the temper- ature measurement guidelines described in Section 7.5.1.

Forced air flow may be required to keep temperatures at or below the temperatures specified in Section 7.5.1 in which case the drive should be oriented, or air flow directed, so that the least amount of air flow resistance is created while providing air flow to the electronics and HDA. Also, the shortest possible path between the air inlet and exit should be chosen to minimize the travel length of air heated by the drive and other heat sources within the rack, cabinet, or drawer environment.

If forced air is determined to be necessary, possible air-flow patterns are shown in Figure 9. The air-flow pat- terns are created by one or more fans, either forcing or drawing air as shown in the illustrations. Conduction, convection, or other forced air-flow patterns are acceptable as long as the temperature measurement guide- lines of Section 7.5.1 are met.

Note. Air flows in the direction shown (back to front) or in reverse direction (front to back)

Above unit

Under unit

Note. Air flows in the direction shown or in reverse direction (side to side)

Figure 9. Air flow

Above unit

Under unit

44	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 controlPredictive failures Temperature Log Page 0Dh Parameter Code DescriptionThermal monitor 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 entriesShipping Product warrantyProduct repair and return information PowerChoiceTM power management Physical/electrical specificationsPowerChoice modes AC power requirements DC power requirementsPage Power sequencing General DC power requirement notesConducted noise immunity 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 Vibration a. Operating-normal Air cleanlinessCorrosive environment Acoustics Mechanical specifications Mounting configuration dimensionsPurpose About FipsLevel 2 security Controlled access Admin SPAbout self-encrypting drives Data encryptionDefault password Random number generator RNGDrive locking Data bandsAuthenticated firmware download Power requirementsSupported commands Cryptographic eraseDrive 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 Installation Drive orientationCooling Air flowDrive mounting GroundingSAS features Interface requirementsDual port support Scsi commands supported Supported commandsSupported commands Supported commands Supported commands Inquiry data Mode Sense dataConstellation inquiry data Page Mode Data Header Miscellaneous features Miscellaneous operating features and conditionsMiscellaneous status 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