Cooling, Air flow | Seagate ST31000640SSIM instruction

8.2Cooling

The host enclosure must dissipate heat 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 Section 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 11. 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.

Figure 11. Air flow

40	Barracuda ES.2 SAS Product Manual, Rev. G

Image 46

Seagate ST31000640SSIM manual Cooling, Air flow

Contents

Barracuda ES.2 SAS ST31000640SS ST3750630SS ST3500620SSPage Physical/electrical specifications Performance characteristicsReliability specifications General description Installation Defect and error managementInterface requirements Seagate Technology Support Services Barracuda ES.2 SAS Product Manual, Rev Scope Barracuda ES.2 SAS Product Manual, Rev. G Electromagnetic compatibility Standards, compliance and reference documentsStandards Electromagnetic susceptibility Compliance Reference documents Barracuda ES.2 SAS Product Manual, Rev. G General description Barracuda ES.2 drive illustration Performance Standard featuresMedia description Reliability Formatted capacities Factory-installed optionsProgrammable drive capacity Barracuda ES.2 SAS Product Manual, Rev. G Access time Performance characteristicsInternal drive characteristics Seek performance General performance characteristics Format command execution time minutesStart/stop time Cache operation Prefetch/multi-segmented cache controlCaching 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 0DhThermal monitor Implementation State of the drive prior to testingDST failure definition Invoking DST Extended test Function Code 010b Product warrantyShort test Function Code 001b Log page entries Shipping Product repair and return information Barracuda ES.2 SAS Product Manual, Rev. G DC power requirements Physical/electrical specificationsAC power requirements ST31000640SS DC power requirements ST3750630SS DC power requirements ST3500620SS DC power requirements Conducted noise immunity General DC power requirement notesPower sequencing Current profiles Typical ST31000640SS drive +5V and +12V current profiles Power dissipation Typical ST3500620SS drive +5V and +12V current profiles Barracuda ES.2 SAS Product Manual, Rev. G Temperature a. Operating Environmental limits Shock and vibration Relative humidityEffective altitude sea level a. Operating Shock Package size Packaged/product weight Drop height Acoustics Air cleanlinessVibration a. Operating-normal Corrosive environment See Section Barracuda ES.2 SAS Product Manual, Rev. G Mechanical specifications Physical dimensions Drive internal defects/errors Defect and error managementDrive error recovery procedures 108.29 Background Media Scan SAS system errorsMedia Pre-Scan Deferred Auto-Reallocation Idle Read After Write Installation Drive orientation Cooling Air flow Drive mounting Grounding Barracuda ES.2 SAS Product Manual, Rev. G SAS features Interface requirements Dual port support Commands supported by Barracuda ES.2 SAS family drives Scsi commands supportedCommand name Command code Supported Commands supported by Barracuda ES.2 SAS family drives Commands supported by Barracuda ES.2 SAS family drives Commands supported by Barracuda ES.2 SAS family drives Inquiry data Mode Sense dataBarracuda ES.2 SAS inquiry data Bytes Data hex Page 2.1 ST31000640SS Mode Sense data Mode Pages 2.2 ST3750630SS Mode Sense data 2.3 ST3500620SS Mode Sense data Supported Feature or condition Miscellaneous operating features and conditionsMiscellaneous features Miscellaneous status SAS physical interface Datum B Physical characteristics Connector requirements Pin descriptions Pin Signal name Signal typeElectrical description SAS pin descriptions SAS transmitters and receivers Signal characteristicsPower Ready LED Out General interface characteristics LED drive signalDifferential signals Eye masks Eye masks overview Absolute amplitude Receive eye maskJitter tolerance masks Normalized time in UI Jitter Peak-toSinusoidal Frequency in kHz Transmitter signal characteristics Signal characteristica Units Gbps Maximum allowable jitter Receiver signal characteristicsSignal characteristic Units Gbps Gbps m, n Deterministic jitterq Compliant jitter test pattern Cjtpat Impedance specificationsReceiver jitter tolerance Impedance requirements Sheet 1 Impedance requirements Sheet 2 Transmitter characteristicsElectrical TxRx connections = -5,437dB Shows the zero-length test load Receiver characteristics Barracuda ES.2 SAS Product Manual, Rev. G