Seagate ST3600002SS, ST3450802SS manual Drive mounting, Grounding

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9.3Drive mounting

Mount the drive using the bottom or side mounting holes. If you mount the drive using the bottom holes, ensure that you do not physically distort the drive by attempting to mount it on a stiff, non-flat surface.

The allowable mounting surface stiffness is 80 lb/in (14.0 N/mm). The following equation and paragraph define the allowable mounting surface stiffness:

K x X = F < 15lb = 67N

where K is the mounting surface stiffness (units in lb/in or N/mm) and X is the out-of-plane surface distortion (units in inches or millimeters). The out-of-plane distortion (X) is determined by defining a plane with three of the four mounting points fixed and evaluating the out-of-plane deflection of the fourth mounting point when a known force (F) is applied to the fourth point.

Note. Before mounting the drive in any kind of 3.5-inch to 5.25-inch adapter frame, verify with Seagate Technology that the drive can meet the shock and vibration specifications given herein while mounted in such an adapter frame. Adapter frames that are available may not have a mechanical structure capable of mounting the drive so that it can meet the shock and vibration specifications listed in this manual.

9.4Grounding

Signal ground (PCBA) and HDA ground are connected together in the drive and cannot be separated by the user. The equipment in which the drive is mounted is connected directly to the HDA and PCBA with no electri- cally isolating shock mounts. If it is desired for the system chassis to not be connected to the HDA/PCBA ground, the systems integrator or user must provide a nonconductive (electrically isolating) method of mount- ing the drive in the host equipment.

Increased radiated emissions may result if you do not provide the maximum surface area ground connection between system ground and drive ground. This is the system designer’s and integrator’s responsibility.

Cheetah NS 10K.2 SAS Product Manual, Rev. F

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Contents ST3600002SS ST3450802SS Cheetah NS 10K.2 SASPage Contents Interface requirements Defect and error managementInstallation Seagate Online Support and Services Seagate Technology support servicesScope Standards Standards, compliance and reference documentsElectromagnetic compatibility Electromagnetic susceptibilityCompliance Reference documents General description Media description Standard featuresPerformance ReliabilityProgrammable drive capacity Factory-installed optionsFormatted capacities Internal drive characteristics Performance characteristicsAccess time Seek performanceStart/stop time Format command execution time minutesGeneral performance characteristics Caching write data Prefetch/multi-segmented cache controlCache operation Prefetch operation Error rates Reliability specificationsRecoverable Errors Unrecoverable ErrorsInterface errors Reliability and servicePreventive maintenance Hot plugging the driveControlling S.M.A.R.T 4 S.M.A.R.TPerformance impact Reporting controlPredictive failures Temperature Log Page 0Dh Parameter Code DescriptionThermal monitor Drive Self Test DSTImplementation DST failure definitionExtended test Function Code 010b Product warrantyShort test Function Code 001b Shipping AC power requirements Physical/electrical specificationsDC power requirements ST3600002SS DC power requirementsGeneral DC power requirement notes ST3450802SS DC power requirementsCurrent profiles Power sequencingConducted noise immunity Typical ST3600002SS drive +5V and +12V current profiles ST3450802SS Power dissipationST3600002SS Environmental limits Temperature a. OperatingEffective altitude sea level a. Operating Relative humidityShock and vibration ShockRecommended mounting Vibration a. Operating-normal Air cleanlinessAcoustics Corrosive environmentChina Restriction of Hazardous Substances RoHS Directive Physical dimensions Mechanical specificationsDrive error recovery procedures Defect and error managementDrive internal defects/errors 77.81 Background Media Scan SAS system errorsMedia Pre-Scan Deferred Auto-ReallocationIdle Read After Write Drive orientation InstallationAir flow CoolingGrounding Drive mountingInterface requirements SAS featuresDual port support Commands supported by Cheetah NS 10K.2 SAS family drives Scsi commands supportedCommands supported by Cheetah NS 10K.2 SAS family drives Commands supported by Cheetah NS 10K.2 SAS family drives Commands supported by Cheetah NS 10K.2 SAS family drives 10.3.2Mode Sense data Inquiry dataPage Mode Pages 10.3.2.1 ST3600002SS Mode Sense data10.3.2.2 ST3450802SS Mode Sense data Miscellaneous status Miscellaneous operating features and conditionsMiscellaneous features SAS physical interface Datum B Connector requirements Physical characteristicsSAS pin descriptions Electrical descriptionPin descriptions Power Signal characteristicsSAS transmitters and receivers Ready LED OutDifferential signals LED drive signalGeneral interface characteristics 10.5.2.1 Eye masks 10.5.2.1.1 Eye masks overviewReceive eye mask 2OP 0, 5 xadditional sinusoidal jitter X 1OP Transmitter signal characteristics Maximum allowable jitter Receiver signal characteristicsImpedance requirements Sheet 1 Compliant jitter test pattern CjtpatElectrical TxRx connections Impedance requirements Sheet 2= -5, 437dB Shows the zero-length test load Additional information SAS-2 Specification complianceReceiver characteristics Cheetah NS 10K.2 SAS Product Manual, Rev. F Index Page SAS See also cooling Page Americas Seagate Technology LLC

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