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Seagate ST9400321AS, ST9640320AS, ST9640322AS manual Drive mounting, Top cover stiffness/deflection

Models: ST9250310AS ST9160316AS ST9500320AS ST9640322AS ST9320312AS ST9640320AS ST9320310AS ST9400321AS

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4.4Drive mounting

You can mount the drive using four screws in the side-mounting holes or four screws in the bottom-mounting holes. See Figure 4 for drive mounting dimensions. Follow these important mounting precautions when mount- ing the drive:

•Allow a minimum clearance of 0.030in (0.76 mm) around the entire perimeter of the drive for cooling.

•Use only M3 UNC mounting screws.

•Do not overtighten the mounting screws. Maximum torque: 4.0 in-lb (0.4519 N-m).

•Four (4) threads (0.080in, 2.032 mm) minimum screw engagement recommended.

•Avoid excessive drive distortion when mounting. Refer to the following specifications for stiffness/deflection information:

Top cover stiffness/deflection

Operating with no performance degradation, emitted noise,	10 mm probe: 1.5kgf or
mechanical damage, or hard errors	5 mm probe: 0.92kgf

Non-operating with no hard errors	20 mm probe: 2kgf at any point of top cover
	20 mm probe: 15kgf at top cover edges only

Momentus Product Manual, Rev. D

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Seagate ST9400321AS, ST9640320AS, ST9640322AS, ST9500320AS, ST9320310AS manual Drive mounting, Top cover stiffness/deflection

Contents

Momentus Revision Date Revision history Contents Momentus Product Manual, Rev. D List of Figures Page Seagate Online Support and Services Seagate Technology support services Introduction 4K byte/sector modelsByte/sector models About the Serial ATA interface Drive specifications Specification summary tableDrive specifications for 640, 500 and 400GB models To 12,192 m -1000 ft to 40,000 ft Drive specifications for 320, 250 and 160GB models Drive specifications for 320, 250 and 160GB models Physical organization Default logical geometryLBA mode Formatted capacity Typical seek times Physical characteristicsRecording and interface technology Seek time Start/stop times Power specifications Voltage tolerance Typical current profileDeferred spinup Conducted noise Idle mode Power-management modesPower management modes Active mode Environmental specifications Vibration ShockOperating shock Nonoperating shock Test for Prominent Discrete Tones PDTs Drive A-weighted Sound Power Levels SWL, BAAcoustics Electromagnetic immunity Agency certification Safety certificationMeasurement type Specification Reliability Korean RRL Australian C-Tick N176FCC verification China Restriction of Hazardous Substances RoHS Directive Environmental protectionCorrosive environment European Union Restriction of Hazardous Substances RoHS Handling and static-discharge precautions Configuring and mounting the drive Serial ATA cables and connectors Configuring the drive Top cover stiffness/deflection Drive mounting Measurements shown in are in inches Segment Pin Function Definition Serial ATA connector pin definitionsSignal Serial ATA Sata interface P10 Ground 2nd mate P11 Reserved Pin Function Definition Command name Command code in hex ATA-standard commands Supported ATA commands ATA-standard security commands Command name Command code in hex Word Description Value Identify Device command Xx07H Description if bit is set to Bit Set Features command values Set Features command 3 S.M.A.R.T. commands M.A.R.T. commandsCode in features register A.R.T. command Momentus Product Manual, Rev. D Index Page Page Momentus Product Manual, Rev. D Page Seagate Technology LLC