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Seagate ST9500622SS, ST9500621SS, ST9500620SS, 100620418, ST91000642SS manual Cooling, Air flow

Models: ST91000640SS ST91000641SS 100620418 ST91000642SS ST9500622SS ST9500621SS ST9500620SS

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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 disk 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 12. 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.

Figure 12. Air flow

Note. Image is for reference only, may not represent actual drive.

50	Constellation.2 SAS Product Manual, Rev. H

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Seagate ST9500622SS, ST9500621SS, ST9500620SS, 100620418, ST91000642SS, ST91000641SS, ST91000640SS manual Cooling, Air flow

Contents

Standard Models Self-Encrypting Drive Models ST91000640SSST91000641SS ST9500620SSST9500621SSST91000642SS ST9500622SS SED Fips 140-2 Models Revision history Contents About Fips About self-encrypting drives Defect and error managementInstallation Interface requirementsPage Constellation.2 SAS Product Manual, Rev. H List of Figures Constellation.2 SAS Product Manual, Rev. H Seagate Technology support services Seagate Online Support and Services Scope Electromagnetic compatibility Applicable standards and reference documentationStandards Electromagnetic susceptibility Australian C-Tick Electromagnetic complianceElectromagnetic compliance for the European Union Korean KCC European Union Restriction of Hazardous Substances RoHS China Restriction of Hazardous Substances RoHS Directive Reference documents Self-Encrypting Drives Reference Manual General description Standard features Media description Formatted capacities PerformanceReliability Programmable drive capacity Factory-installed options Seek performance characteristics Performance characteristicsInternal drive characteristics Access time General performance characteristics Start/stop time Prefetch/multi-segmented cache control Cache operation Caching write data Prefetch operation Recoverable Errors Reliability specificationsError rates Unrecoverable Errors Interface errors Reliability and serviceSeek errors Preventive maintenance Performance impact 4 S.M.A.R.TControlling S.M.A.R.T Reporting control Predictive failures Temperature Log Page 0Dh Parameter Code DescriptionThermal monitor DST failure definition State of the drive prior to testingDrive Self Test DST Implementation Extended test Function Code 010b Short and extended testsShort test Function Code 001b Log page entries Storage Product warrantyShipping Product repair and return information PowerChoiceTM power management Physical/electrical specificationsPowerChoice modes AC power requirements DC power requirements 1000GB drive Standard & SED model DC power requirements 500GB drive Standard & SED model DC power requirements Power sequencing General DC power requirement notesConducted noise immunity Current profiles TB model current profiles GB model current profiles Power dissipation 1TB model drive in 3Gb operation 1TB model drive in 6Gb operation 500GB model drive in 3Gb operation 500GB model drive in 6Gb operation Environmental limits Temperature a. OperatingRelative humidity Shock and vibration Effective altitude sea level a. OperatingShock Recommended mounting Acoustics Air cleanlinessVibration a. Operating-normal Corrosive environment See Section Constellation.2 SAS Product Manual, Rev. H Mechanical specifications Mounting configuration dimensions Validation Program About FipsPurpose Seagate Enterprise SED Example of Fips tamper evidence labels About self-encrypting drives Controlled accessAdmin SP Data encryption Drive locking Authenticated firmware downloadRandom number generator RNG Data bands Power requirements Supported commands Drive internal defects/errors Defect and error managementDrive error recovery procedures SAS system errors Media Pre-Scan Background Media ScanDeferred Auto-Reallocation Protection Information PI Setting and determining the current Type LevelIdle Read After Write Levels of PI Identifying a Protection Information drive Installation Drive orientation Cooling Air flow Drive mounting Grounding SAS features Interface requirements Dual port support Scsi commands supported Supported commands Supported commands Supported commands Supported commands Inquiry data Mode Sense dataConstellation.2 inquiry data Page Block Descriptor 00 00 00 00 3a 38 60 30 00 00 00 00 00 00 02 Miscellaneous features Miscellaneous operating features and conditionsMiscellaneous status SAS physical interface Datum B Section C C Section a a Electrical description Physical characteristicsConnector requirements Pin descriptions SAS transmitters and receivers Signal characteristicsPower Ready LED Out Differential signals SAS-2 Specification ComplianceLED drive signal General interface characteristics Index Numerics KCC Msid Mtbf See also cooling Page Constellation.2 SAS Product Manual, Rev. H Page Seagate Technology LLC Americas