Seagate ST34501WC, ST34501WD, ST34501DC, ST34501N manual Preface

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Cheetah 4LP Installation Guide, Rev. B

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Preface

This manual contains information for users of the Seagate® Cheetah 4LP SCSI disc drives. It provides support services, per- formance specifications, and initial setup information. Additional information is available in the Cheetah 4LP Product Manual (part number 83329120). Contact your Seagate sales representative if you need to order this publication.

Attention. This high performance Cheetah disc drive MUST have proper power and cooling considerations for reliable operation.

Why is there a difference between 10,000 RPM and 7,200 RPM disc drives?

Cheetah disc drives spinning at 10,000 RPM will dissipate more heat than 7,200 RPM class disc drives (typical power dissipation is 22.5 watts).

The increased heat is primarily due to increased motor power dissipated inside the drive.

The increase in heat dissipation requires that the Cheetah 10,000 RPM disc drives receive more cooling consideration than 7,200 RPM class disc drives.

Proper consideration of enhanced cooling by conduction (heat transfer thru material) can reduce the convection cooling (heat transfer by air motion) requirements.

Note. Please contact Seagate technical support services or your distributor’s technical support if you have questions.

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Contents ST34501N/W/WC/WD/DC Contents Preface Electrostatic discharge protection Important safety information and precautions Cheetah 4LP Installation Guide, Rev. B Wichtige Sicherheitshinweise Cheetah 4LP Installation Guide, Rev. B Page Regulatory agency compliance Electromagnetic susceptibilityElectromagnetic compliance Australian C-Tick Electromagnetic compliance for the European UnionOnline services Seagate technical support servicesSeagate CompuServe forum SeaFAX FAX servicesSeagate technical support Direct-support servicesManufacturer’s representatives Customer service centersGeneral description Drive characteristics Additional drive characteristics +12V8 +5V8 Voltage regulation5 ± 5% ± 5%2 DC power requirements Amps ST34501 WC models WD, DC modelsDimensions of the drive General information Drive modelsScsi ID jumpers Drive termination Circuits and data path widths Terminator powerCable characteristics for single-ended circuits Pin I/O connection to drive Multiple drive connection to host adapter Multiple-drive connection to host adapter Scsi I/O Providing adequate cooling Kühlung des Systems Abbildung 4. Empfohlener Luftstromverlauf Suggested air flowInstallation des Laufwerkes und Anschluß der Kabel Mounting the drive and connecting cablesPage Pin Gleichstrom Pin PowerHinweis Cheetah 4LP Installation Guide, Rev. B Mounting configuration dimensions Quick reference desktop system notes Formatting the driveSetting the Scsi ID on model N drives Setting the Scsi ID jumpersTerminating the drive Terminating the driveSetting terminator power jumpers Additional jumper options Other applicable jumper optionsWD drives Model W and WD drive alternate ID select and LED connection Terminating the drive W model shown Drive Front Other option jumpers are available as illustrated below WC/DC drives Jumper options Applicable jumper optionsDrive Active LED indicator connections Drive Active indicatorPage Page