Seagate ST9146753SS manual Environmental limits, Temperature a. Operating, Relative humidity

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7.5Environmental limits

Temperature and humidity values experienced by the drive must be such that condensation does not occur on any drive part. Altitude and atmospheric pressure specifications are referenced to a standard day at 58.7°F (14.8°C). Maximum wet bulb temperature is 82°F (28°C).

Note. To maintain optimal performance drives should be run at nominal case temperatures.

7.5.1Temperature a. Operating

The drive meets the operating specifications over a 41°F to 131°F (5°C to 55°C) drive case temperature range with a maximum temperature gradient of 86°F (30°C) per hour.

The maximum allowable drive case temperature is 60°C.

The MTBF specification for the drive assumes the operating environment is designed to maintain nominal case temperature. The rated MTBF is based upon a sustained case temperature of 122°F (50°C). Occa- sional excursions in operating temperature between the rated MTBF temperature and the maximum drive operating case temperature may occur without impact to the rated MTBF temperature. However continual or sustained operation at case temperatures beyond the rated MTBF temperature will degrade the drive MTBF and reduce product reliability.

Air flow may be required to achieve consistent nominal case temperature values (see Section 9.2). To con- firm that the required cooling is provided for the electronics and HDA, place the drive in its final mechanical configuration, and perform random write/read operations. After the temperatures stabilize, measure the case temperature of the drive. See Figure 7 for HDA temperature checkpoint.

b.Non-operating

–40° to 158°F (–40° to 70°C) package ambient with a maximum gradient of 30°C per hour. This specifica- tion assumes that the drive is packaged in the shipping container designed by Seagate for use with drive.

HDA Temp.

Check Point

Figure 7. Location of the HDA temperature check point

7.5.2Relative humidity

The values below assume that no condensation on the drive occurs.

a.Operating

5% to 95% non-condensing relative humidity with a maximum gradient of 20% per hour.

b.Non-operating

5% to 95% non-condensing relative humidity.

Savvio 15K.3 SAS Product Manual, Rev. A

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Contents SED FIPS140-2 Models ST9300653SSST9300553SS ST9146853SSST9146753SSST9300453SS ST9146653SS Standard Models Self-Encrypting Drive ModelsPage Contents Interface requirements Defect and error managementInstallation About Fips About self-encrypting drivesPage Savvio 15K.3 SAS Product Manual, Rev. a List of Figures Page Seagate Online Support and Services Seagate Technology support servicesScope Electromagnetic susceptibility Applicable standards and reference documentationStandards Electromagnetic compatibilityKorean KCC Electromagnetic complianceElectromagnetic compliance for the European Union Australian C-TickEuropean Union Restriction of Hazardous Substances RoHS Reference documents Scsi Commands Reference Manual SAS Interface ManualGeneral description Media description Standard featuresPerformance ReliabilityFormatted capacities Programmable drive capacity Factory installed optionsAccess time Performance characteristicsInternal drive characteristics Seek performance characteristicsFormat command execution time General performance characteristicsStart/stop time Cache operation Prefetch/multi-segmented cache controlPrefetch operation Caching write dataUnrecoverable Errors Reliability specificationsError rates Recoverable ErrorsPreventive maintenance Reliability and serviceSeek errors Interface errorsPerformance impact Maximum processing delay4 S.M.A.R.T Controlling S.M.A.R.TTemperature Log Page 0Dh Parameter Code Description Predictive failuresThermal monitor Implementation State of the drive prior to testingDrive Self Test DST DST failure definitionLog page entries Short and extended testsShort test Function Code 001b Extended test Function Code 010bStorage Product warrantyShipping Product repair and return informationPhysical/electrical specifications PowerChoiceTM power managementPowerChoice modes DC power requirements AC power requirementsRegulation 300GB models DC power requirements146GB models DC power requirements General DC power requirement notes Power sequencingConducted noise immunity Current profile for 300GB models Current profilesCurrent profile for 146GB models Power dissipation 300GB models in 6Gb operation300GB models in 3Gb operation 146GB models in 3Gb operation 146GB models in 6Gb operationTemperature a. Operating Environmental limitsRelative humidity Effective altitude sea level a. Operating Shock and vibrationShock Recommended mounting Vibration a. Operating-normalAir cleanliness Corrosive environmentAcoustics Dimensions Mechanical specificationsAbout Fips PurposeLevel 2 security Data encryption Controlled accessAdmin SP About self-encrypting drivesData bands Default passwordRandom number generator RNG Drive lockingCryptographic erase Authenticated firmware downloadPower requirements Supported commandsDefect and error management Drive internal defects/errorsDrive error recovery procedures Background Media Scan SAS system errorsMedia Pre-Scan Deferred Auto-ReallocationIdle Read After Write Identifying a Protection Information drive Setting and determining the current Type LevelProtection Information PI Levels of PIDrive orientation InstallationAir flow CoolingGrounding Drive mountingInterface requirements SAS featuresScsi commands supported Supported commandsDual port support Supported commands Supported commands Supported commands Mode Sense data Inquiry dataSavvio inquiry data Page Mode Data Header Mode Data Header Miscellaneous operating features and conditions Miscellaneous featuresMiscellaneous status SAS physical interface Datum B Section C C Section a a Pin descriptions Physical characteristicsConnector requirements Electrical descriptionReady LED Out Signal characteristicsPower SAS transmitters and receiversGeneral interface characteristics SAS-2 Specification complianceLED drive signal Differential signalsNumerics IndexPage Msid Mtbf See also cooling Page Savvio 15K.3 SAS Product Manual, Rev. a
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