Seagate ST3400071FC, ST3500071FC manual Cooling, Air flow

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8.3Cooling

The host enclosure must provide heat removal from the drive. You should confirm that the host enclosure is designed to ensure that the drive operates within the temperature measurement guidelines described in Sec- tion 6.4.1. In some cases, forced airflow may be required to keep temperatures at or below the temperatures specified in Section 6.4.1.

If forced air is necessary, possible air-flow patterns are shown in Figure 7. The air-flow patterns are created by 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 guidelines of Section 6.4.1 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 7.

Air flow

Above unit

Under unit

40	NL35 Series FC Product Manual, Rev. D

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Contents NL35 Series FC ST3500071FC ST3400071FCPage Contents Defect and error management InstallationInterface requirements Seagate Technology support services NL35 Series FC Product Manual, Rev. D List of Figures NL35 Series family disc driveViii NL35 Series FC Product Manual, Rev. D Scope NL35 Series family disc driveNL35 Series FC Product Manual, Rev. D Applicable standards and reference documentation StandardsElectromagnetic compatibility Electromagnetic susceptibilityElectromagnetic compliance Environmental protectionReference documents Fibre Channel Interface ManualNL35 Series FC Product Manual, Rev. D General description Standard features Media description PerformanceReliability Formatted capacitiesFactory-installed accessories Factory-installed optionsUser-installed accessories Programmable drive capacityPerformance characteristics Internal drive characteristicsSeek performance characteristics Access timeGeneralized performance characteristics GHzStart/stop time Prefetch/multi-segmented cache controlCache operation Caching write data Prefetch operationPage NL35 Series FC Product Manual, Rev. D Reliability specifications Error ratesReliability and service Recoverable ErrorsUnrecoverable errors Seek errorsPreventive maintenance Mean Time Between Failure MtbfHot plugging the drive 4 S.M.A.R.T Controlling S.M.A.R.TPerformance impact MillisecondsTemperature Log page 0Dh Predictive failuresThermal monitor Parameter Code DescriptionState of the drive prior to testing Drive Self Test DSTDST Failure Definition ImplementationInvoking DST Short and extended testsShort test Function Code 001b Extended test Function Code 010bProduct warranty AbortShipping Product repair and return informationPhysical/electrical specifications AC power requirementsDC power requirements ST3500071FC/ST3400071FC DC power requirementsGeneral DC power requirement notes Power sequencingConducted noise immunity Power dissipation Temperature Environmental limitsRelative humidity Effective altitude sea levelPackage size Packaged/product weight Drop height Shock and vibrationShock Recommended mounting Air cleanliness VibrationTypical idle mode sound power ST3500071FC and ST3400071FC Corrosive environmentAcoustics Mechanical specifications Mounting configuration dimensionsNL35 Series FC Product Manual, Rev. D Defect and error management Drive internal defects/errorsDrive error recovery procedures 108.3 FC-AL system errors Background Media ScanMedia Pre-Scan NL35 Series FC Product Manual, Rev. D Installation Drive ID/option selectionDrive orientation Cooling Air flowDrive mounting GroundingNL35 Series FC Product Manual, Rev. D FC-AL features Fibre Channel link service framesLink services supported Type of frame Link serviceFibre Channel task management functions Fibre Channel Scsi FCP task management functionsFibre Channel task management responses FC Scsi FCP response codesFibre Channel port login NPort login Plogi payloadBytes Fibre Channel port login accept NPort Login Accept ACC payloadFibre Channel Process Login Process Login Plri payloadFibre Channel Process Login Accept Process Login Accept ACC payloadFibre Channel fabric login Fabric Login Flogi payloadFibre Channel fabric accept login Fabric Login Accept ACC payloadDual port support Fibre Channel Arbitrated Loop optionsFC-AL options supported Option SupportedScsi commands supported Supported commandsCommand code Supported Command name Supported commands Supported commands Supported commands Supported commands Mode Sense data Inquiry dataNL35 Series inquiry data Bytes Data hexPage DEF CHG NL35 Series FC Product Manual, Rev. D Miscellaneous operating features and conditions Miscellaneous featuresSupported Feature or condition Miscellaneous statusPhysical characteristics FC-AL physical interfacePhysical description Connector requirements Part description Positions Part number FeaturesElectrical description Pin Signal name Signal type Pin descriptionsFC-SCA pin descriptions Power Fault LED OutFC-AL transmitters and receivers Enable port bypass signals Normal command activity LED statusActive LED Out Active LED Out conditionsMotor start control signals Parallel Enclosure Services Interface ESIMotor start controls 11 SEL6 through SEL0 ID linesSetting Arbitrated loop physical address Alpa valuesHex Dec Signal characteristics LED driver signals LED drive signalDifferential Pecl output characteristics Differential Pecl input characteristicsEye diagram data values Link rate GHzNL35 Series FC Product Manual, Rev. D Seagate Technology support services InternetPresales Support Technical SupportWarranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index NumericsFAN Flogi Plogi Page See also cooling