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Barracuda 9 Installation Guide, Rev. A

traveled by air that is heated by the drive and by other nearby
heat sources.

Figure 3 shows two design approaches with one or more fans
used to generate air flow. The air-flow patterns can be created
by the fans either pushing or drawing air. The overall flow pattern
can be directed from front to back, back to front, or side to side.

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Summary of Contents for BARRACUDA 9

Page 1: ...BARRACUDA 9 Disc Drive ST19171N W WD WC DC Installation Guide...

Page 2: ...C DC drives section 37 1995 Seagate Technology Inc All rights reserved Publication Number 83329020 Rev A February 1996 Seagate Seagate Technology and the Seagate logo are reg istered trademarks of Sea...

Page 3: ...vices used within the drive circuitry Although some devices such as metal oxide semiconductors are extremely sensitive all semiconductors as well as some resistors and capacitors may be damaged or deg...

Page 4: ...nit Some procedures require the use of special tools For proper maintenance and safety you must use these tools as recommended The procedures in this manual and labels on the unit contain warnings and...

Page 5: ...in an equipment rack or cabinet When units are stacked vertically pay special attention to the top where tem peratures are usually highest Follow the precautions listed above in Electrostatic dischar...

Page 6: ...or certifying where required by law A necessary part of meeting safety requirements is the provision for overcurrent protection on drive SELV supply voltages This unit is a component part and as such...

Page 7: ...eit besch digen k nnen so da deren Gebrauch mit Risiko behaftet ist Die Warn und Vorsichtshinweise sind nicht allumfassend Es ist uns einfach nicht m glich alle Wartungsmethoden oder die eventuellen R...

Page 8: ...ie die oben unter Electrostatic Discharge Protec tion angegebenen Sicherheitsma nahmen Nehmen Sie keine Platinen aus dem Laufwerkgeh use Wenn eine Platine defekt ist mu das gesamte Laufwerk zur Rep ar...

Page 9: ...fwerk vorbehaltlich der endg ltigen Zulasssung im Endprodukt Designer von Untersys temen sind daf r verantwortlich die Voraussetzungen f r die Einhaltung sicherheits oder aufsichtsbeh rdlicher Vorschr...

Page 10: ...m compliance to the above directives The drive was tested in a representative system for typical applications The selected system represents the most popular characteristics for test platforms The sys...

Page 11: ...847 7080 Use a touch tone telephone to access Seagate s automated FAX system and select technical support information by return FAX This service is available 24 hours a day 7 days a week CompuServe fo...

Page 12: ...ccess this service The communications software must be set for eight data bits no parity and one stop bit 8N1 These oper ate at 300 to 9600 baud With this service you can access Specifications and jum...

Page 13: ...or an external enclosure designed to house one or more disc drives or other peripheral units In either case the disc drive must receive adequate cooling refer to Providing adequate cooling and it mus...

Page 14: ...n RPM 7 200 Average latency 4 17 msec Internal transfer rate 80 to 124 Mbits sec variable with zone Max sync SCSI transfer rate N 20 Mbytes sec W WD WC DC 40 Mbytes sec Multi segmented cache 512 Kbyte...

Page 15: ...83 TBD TBD Maximum starting current Peak DC 3 6 Peak AC 3 0 98 2 2 3 1 TBD TBD TBD TBD Delayed motor start max 1 4 1 04 0 05 TBD TBD Peak operating current Typical DC 1 Maximum DC 1 Maximum peak 0 97...

Page 16: ...e tolerance is inclusive of ripple noise and transient response 6 At power up the motor current regulator limits the 12V cur rent to an average value of less than 1 4A although instanta neous peaks ma...

Page 17: ...al 12All power saving features are enabled ASA II code only 13Seeking is defined as a third stroke seek at OD The com mand is issued every 20 msec 14Read track is defined as repeat reads of track 15 w...

Page 18: ...models Page ST19171N 28 ST19171W ST19171WD 32 ST19171WC ST19171DC 37 General information The following general information topics are discussed SCSI ID jumpers Drive termination Terminator power Inte...

Page 19: ...sc drives are factory set with the SCSI ID set at 0 To change the SCSI ID refer to the appropriate drive sec tion for your model If after completing the installation process the drive s LED does not s...

Page 20: ...ontrollers treat the internal and external chains as separate logical buses This means you may need to terminate both the first and last devices on both logical buses to achieve proper termination If...

Page 21: ...tandard non wide 8 bit SCSI data bus how ever you can use these wide drives on a standard non wide 8 bit data bus Providing adequate cooling The enclosure design must ensure adequate cooling for the d...

Page 22: ...nd by other nearby heat sources Figure 3 shows two design approaches with one or more fans used to generate air flow The air flow patterns can be created by the fans either pushing or drawing air The...

Page 23: ...tieren oder den Luft strom so zu lenken da der geringste Luftstromwiderstand erzeugt wird und gleichzeitig ein Luftstrom ber den Platinen und um die Kopf und Festplatteneinheit HDA gegeben ist W hlen...

Page 24: ...inheit Under unit Unter der Einheit Note Air flows in the direction shown back to front or in reverse direction front to back Hinweis Luftstrom in der angezeigten Richtung von vorne nach hinten oder i...

Page 25: ...drive The maximum length that the screws should extend into the chassis mounting holes is 0 15 inch 3 81 mm measured from the outer surface of the chassis Tighten the screws down evenly Do not over ti...

Page 26: ...der ausgerichtet In diesem Fall die Schraube nicht in das Gewindeloch forcieren sondern die Schraube herausnehmen und erneut in das Gewindeloch einf hren 2 Verify that all connections between the driv...

Page 27: ...lung des Systems nicht behindern Das Laufwerk wird ber einen 4 poligen neben dem SCSI Anschlu befestigten Steckverbinder mit Gleichstrom ver sorgt Der Ausgang eines Netzteils mu SELV safety extra low...

Page 28: ...ting method of mounting the drive in the host system This may increase radiated emissions and is the system designer s responsibility Hinweis Die Signalerde auf der Stromregelungskarte PCB und der Kop...

Page 29: ...erase all user data 1 Turn on DC power 2 Boot the system from a system floppy disc or from a previ ously installed hard disc drive if there is one 3 Format the disc drive Barracuda 9 disc drives are...

Page 30: ...the SCSI ID see Figure 5 To change the SCSI ID install jumpers on the appropriate pins as shown in the illustration Figure 5 Setting the SCSI ID A2 A1 A0 SCSI ID 0 default SCSI ID 1 SCSI ID 2 SCSI ID...

Page 31: ...erminators by removing the jumper from pins 15 and 16 of connector J2 see Figure 6 If you install the drive on the end of the SCSI bus enable termina tion by installing a jumper on pins 15 and 16 of c...

Page 32: ...ally need to change this option and can leave the drive configured as it was shipped from the factory Figure 7 Setting terminator power jumpers Term Power to SCSI Bus Term Power from Drive default T E...

Page 33: ...D 2 the drive starts in 24 seconds Delay Motor Start option valid only if the Enable Motor Start jumper is not connected Enable motor start The drive waits for the Start Unit command from the host bef...

Page 34: ...illustration Optional connections to switching cir cuits in host equipment are provided on J1 auxiliary to set the SCSI ID see Figure 10 Figure 9 Setting the SCSI ID A2 A3 A1 A0 SCSI ID 0 default SCSI...

Page 35: ...nward Pin 1 PCB Pin 12 1P 2P 3P 4P Pins 2 4 6 and 8 are driven low for 250 ms after PWR ON and reset to allow jumper selectable SCSI ID default SCSI ID 0 SCSI ID 1 SCSI ID 2 SCSI ID 3 SCSI ID 4 SCSI I...

Page 36: ...jumper on pins 15 and 16 of connector J2 see Figure 11 Note Use active ANSI SCSI 2 Alternative 2 terminators when terminating the bus ST19171WD drives do not have internal terminators or any other way...

Page 37: ...re are two possible terminator power configurations for ST19171WD drives see Figure 12 Figure 12 Setting terminator power jumpers Term Power to SCSI Bus Term Power from Drive default ST19171W T E D S...

Page 38: ...ID 2 the drive starts in 24 seconds Delay Motor Start option valid only if the Enable Motor Start jumper is not connected Enable motor start The drive waits for the Start Unit command from the host be...

Page 39: ...normally set over the SCSI bus by the host system using connector contacts 39 ID0 40 ID2 79 ID1 and 80 ID3 Terminating the drive ST19171WC and ST19171DC drives do not have internal termi nators or any...

Page 40: ...ting default Write protect On disables writing Write Protect option The host system has complete control over motor start functions Do not install a jumper on these pins Delay Motor Start option The h...

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Page 44: ...Seagate Technology Inc 920 Disc Drive Scotts Valley CA 95066 4544 USA Publication Number 83329020 Rev A Printed in USA...

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