BARRACUDA 4 Family ST15150N/ND/DC ST15150W/WD/WC Installation GuideThis is the html version of the file http://www.seagate.com/support/disc/iguides/scsi/28870e.pdf. G o o g l e automatically generates html versions of documents as we crawl the web. To link to or bookmark this page, use the following url: http://www.google.com/search?q=cache:kRv9i9NoB6IJ:www.seagate.com/support/disc/iguides/scsi/28870e.pdf+st15150+specification&hl=en&gl=au&ct=clnk&cd=5&lr=lang_en Google is neither affiliated with the authors of this page nor responsible for its content. These search terms have been highlighted: st15150 These terms only appear in links pointing to this page: specification Page 1 ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○BARRACUDA 4 Family○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ST15150N/ND/DC○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ST15150W/WD/WC○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○Installation Guide○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ Page 2 2Barracuda 4 Installation Guide, Rev. EContentsPreface .................................................................. 1Electrostatic discharge protection ........................ 1Important safety information and precautions....... 2Wichtige Sicherheitshinweise ............................... 5Technical support services ..................................... 10General description ................................................ 13Initial setup information ........................................... 19Kühlung des Systems .......................................... 24Installation des Laufwerkesund Anschluß der Kabel................................... 27N/ND drives section................................................ 35W/WD drives section .............................................. 40WC/DC drives section ............................................ 46© 1995 Seagate Technology, Inc. All rights reservedPublication Number: 83328870, Rev. EJuly 1995Seagate®, Seagate Technology®, and the Seagate logoare registered trademarks of Seagate Technology, Inc.Barracuda™, SeaFAX™, SeaFONE™, SeaTDD™,and SeaBOARD™ are trademarks of Seagate Tech-nology, Inc. Other product names are registered trade-marks or trademarks of their owners.No part of this publication may be reproduced in anyform without written permission from Seagate Tech-nology, Inc. Page 3 Barracuda 4 Installation Guide, Rev. E1PrefaceThis manual contains information for users of Seagate®ST15150N/ND/DC and ST15150W/WD/WCBarracuda™4SCSI disc drives. It provides support services, perfor-mance specifications, and initial setup information. Ad-ditional information is available in the Barracuda 4Product Manual(part number 83328880). Contact yourSeagate sales representative if you need to order thispublication.Electrostatic discharge protectionCaution. Removal of circuit boards by personnel notperforming depot repair will damage com-ponents and may void the warranty.All drive electronic assemblies are sensitive to staticelectricity, due to the electrostatically sensitive de-vices used within the drive circuitry. Although somedevices such as metal-oxide semiconductors are ex-tremelysensitive, all semiconductors, aswellassomeresistors and capacitors, may be damaged or de-graded by exposure to static electricity.Electrostatic damage to electronic devices may becaused by the direct discharge of a charged conductoror by exposure to the static fields surrounding chargedobjects. To avoid damaging drive electronic assem-blies, observe the following precautions when installingor servicing the drive: Page 4 2Barracuda 4 Installation Guide, Rev. E• Ground yourself to the drive whenever the driveelectronics are or will be exposed. Connect yourselfto ground with a wrist strap (Seagate part number12263496). Connection may be made to any groundedmetal assembly. As a general rule, remember that youand the drive electronics must all be grounded to avoidpotentially damaging static discharges.• Turn off the power before removing or installing theDC power cable.• Do not remove any circuit boards from the drive.• Never use an ohmmeter on any circuit boards.• When installing the drive on a carrier or tray, dis-charge the carrier or tray prior to inserting it into thesystem.Important safety information and precautionsCaution. Use forced-air ventilation when bench-test-ing the drive to ensure proper cooling ofdrive components.Use proper safety and repair techniques for safe, reli-able operation of this unit. Service should be done onlyby qualified persons. We recommend the procedures inthis manual as effective ways of servicing the unit.Some procedures require the use of special tools. Forproper maintenance and safety, you must use thesetools as recommended. Page 5 Barracuda 4 Installation Guide, Rev. E3The procedures in this manual and labels on the unitcontain warnings and cautions that must be carefullyread and followed to minimize or eliminate the risk ofpersonal injury. The warnings point out conditions orpractices that may endanger you or others. The cau-tions point out conditions or practices that may damagethe unit, possibly making it unsafe for use.These warnings and cautions are not exhaustive. Wecannot possibly know, evaluate, and advise you of allthe ways in which maintenance might be performed orthe possible risk of each technique. Consequently, wehave not completed any such broad evaluation. If youuse a non-approved procedure or tool, first ensure thatthe method you choose will not risk either your safety orunit performance.Always observe the following warnings and precau-tions:• Perform all maintenance by following the proceduresin this manual.• Follow all cautions and warnings in the procedures.• Use sound safety practices when operating or repair-ing the unit.• Use caution when troubleshooting a unit that hasvoltages present. Turn off power to the unit beforeservicing it. Page 6 4Barracuda 4 Installation Guide, Rev. E• Wear safety shoes when removing or replacing heavyparts.• Ensure that the internal temperature of the rack orcabinet does not exceed the limits defined for thedrive when the drive is mounted in an equipment rackor cabinet. When units are stacked vertically, payattention to the top where temperatures are usuallyhighest.• Follow the precautions listed above in “Electrostaticdischarge protection.”• Do not remove any circuit boards from the drivechassis. Return the entire drive for depot repair if anycircuit board is defective. Removal of circuit boardsby personnel not performing depot repair will damagecomponents and may void the warranty.• Do not remove the head and disc assembly (HDA)from the drive chassis. Return the entire drive fordepot repair if the HDA is defective.• Do not attempt to disassemble the HDA. It is not fieldrepairable. If the sealed HDA is opened by personnelnot performing depot repair, this will damage compo-nents and void the warranty.As a component, this drive is designed to be installedand operated in accordance with UL1950, IEC950,EN60950, CSA C22.2 No. 950-M89, and VDE0805. Page 7 Barracuda 4 Installation Guide, Rev. E5Seagate takes all reasonable steps to ensure that itsproducts are certifiable to currently accepted stan-dards. Typical applications of these disc drives includecustomer packaging and subsystem design. Safetyagencies conditionally certify component assemblies,such as the Barracuda disc drive, based on their finalacceptability in the end-use product. The subsystemdesigners are responsible for meeting these condi-tions of acceptability in obtaining safety/regulatoryagency compliance in their end-use products and forcertifying where required by law. A necessary part ofmeeting safety requirements is the provision forovercurrent protection on drive SELV supply volt-ages.This unit is a component part and as such is not meantto comply with FCC or similar national requirements asa stand-alone unit. Engineering radiated emissionstest results are available through the Seagate SafetyDepartment to assist the subsystem designer.Wichtige SicherheitshinweiseVorsicht. Beim Testen des Laufwerks auf demPrüftisch ist Fremdbelüftung vorzusehen, um eineausreichende Kühlung der Laufwerkkomponentensicherzustellen.Verwenden Sie geeignete Sicherheits- und Page 8 6Barracuda 4 Installation Guide, Rev. EReparaturverfahren, um den sicheren, zuverlässigenBetrieb dieser Einheit zu gewährleisten. Reparaturendürfen nur von qualifiziertem Fachpersonalvorgenommen werden. Wir empfehlen die Verfahren indiesem Handbuch als effektive Methoden zurWartung und Reparatur der Einheit. Einige Verfahrenerfordern Spezialwerkzeuge; diese müssen zursachgemäßen Ausführung der Wartungsarbeiten undaus Sicherheitsgründen den Empfehlungenentsprechend verwendet werden.Die Verfahren in diesem Handbuch und die Aufkleberauf dem Gerät enthalten Warn- und Vorsichtshinweise.Diese Hinweise sind sorgfältig durchzulesen und zubeachten, um das Risiko von Verletzungen auf einMindestmaß zu beschränken oder ganz zu vermeiden.Die Warnhinweise machen auf Situationen oderPraktiken aufmerksam, die Sie oder andere gefährdenkönnten. Die Vorsichtshinweise machen auf Situationenoder Praktiken aufmerksam, die Einheit beschädigenkönnen, so daß deren Gebrauch mit Risiko behaftet ist.Die Warn- und Vorsichtshinweise sind nichtallumfassend! Es ist uns einfach nicht möglich, alleWartungsmethoden oder die eventuellen Risikenjeder Methode zu kennen, zu beurteilen und Sieentsprechend zu beraten. Aus diesem Grund habenwir auf eine derartige umfassende Beurteilung Page 9 Barracuda 4 Installation Guide, Rev. E7verzichtet. Falls Sie ein hier nicht beschriebenesVerfahren oder Werkzeug verwenden, stellen Siezuerst sicher, daß das gewählte Verfahren wederIhre persönliche Sicherheit noch die Leistung derEinheit gefährdet.Beachten Sie in jedem Fall die folgenden Warn-undVorsichtshinweise:• Führen Sie alle Wartungsarbeiten entsprechend denAnweisungen in diesem Handbuch aus.• Beachten Sie alle Warn- und Vorsichtshinweise indiesem Handbuch.• Treffen Sie beim Betrieb oder bei der Reparatur derEinheit angemessene Sicherheitsvorkehrungen.• Wenn eine Einheit unter Spannung steht, gehen Siebei der Fehlerdiagnose besonders vorsichtig vor.Schalten Sie die Einheit aus, bevor Sie mit denReparaturarbeiten beginnen.• Tragen Sie Sicherheitsschuhe, wenn Sie schwereTeile aus- bzw. einbauen.• Wenn das Laufwerk in einem Einbaugestell oderGehäuse montiert ist, sorgen Sie dafür, daß dieTemperatur im Inneren des Gestells oder Gehäusesdie für das Laufwerk vorgegebenen Grenzwerte nichtübersteigt. Wenn Einheiten vertikal übereinanderbetestigt werden, achten Sie besonders auf den Page 10 8Barracuda 4 Installation Guide, Rev. Eoberen Stapelbereich, da dort die Temperaturgewöhnlich am höchsten ist.• Befolgen Sie die oben unter “Electrostatic DischargeProtection” angegebenen Sicherheitsmaßnahmen.• Nehmen Sie keine Platinen aus demLaufwerkgehäuse. Wenn eine Platine defekt ist, mußdas gesamte Laufwerk zur Reparatur eingeschicktwerden. Die Herausnahme von Platinen durch anderePersonen als die für die werkseitige Reparaturzuständigen kann zu einer Beschädigung derKomponenten undErlöschen des Garantieanspruchsführen.• Die vormontierte Kopf- und Festplatteneinheit (HDA)nicht aus dem Laufwerkgehäuse nehmen! Falls dieHDA beschädigt ist, schicken Sie das gesamteLaufwerk zur Reparatur ein.• Die HDA ist nicht vor Ort reparierbar und darf nichtauseinandergenommen werden! Öffnen derversiegelten HDA durch andere Personen als die fürdie werkseitige Reparatur zuständigen hat eineBeschädigung der Komponenten und Erlöschen desGarantieanspruchs zur Folge.Als Teilkomponente ist dieses Laufwerk für die Instal-lation und den Betrieb in Übereinstimmung mit UL1950, IEC950, EN60950, CSA C22.2 950-M89 undVDE0805 vorgesehen. Page 11 Barracuda 4 Installation Guide, Rev. E9Seagate ist ständig bemüht, die Zulassungsfähigkeitvon Seagate-Produkten im Rahmen der gegenwärtiggeltenden Standards zu gewährleisten. Zu dentypischen Anwendungen dieser Festplattenwerkezählen Systemeinbau durch den Kunden und dieKonstruktion von Untersystemen. Sicherheitsbehördengewähren eine bedingte Zulassung für Komponentenwie das Barracuda-Festplattenlaufwerk vorbehaltlichder endgültigen Zulassung im Endprodukt. Designervon Untersystemen sind dafür verantwortlich, dieVoraussetzungen für die Einhaltung sicherheits- oderaufsichtsbehördlicher Vorschriften in ihrenEndprodukten und - falls gesetzlich vorgeschrieben -für die Zulassung zu schaffen.Eine Grundvoraussetzung zur Einhaltung derSicherheitsanforderungen ist die Bereitstellungeines Überlastschutzes für die SELV-Versorgungsspannungen des Laufwerks.Dieses Gerät ist eine Baugruppe und unterliegtals solche nicht den Anforderungen der FCC oderähnlicher nationaler Behörden für eigenständigeGeräte. Technische Testergebnisse zuelektromagnetische Strahlung sind für Designer vonUntersystemen auf Anfrage von der Seagate-Sicherheitsabteilung erhältlich. Page 12 10Barracuda 4 Installation Guide, Rev. ETechnical support servicesSeagate Technology provides technical support litera-ture and diagnostic utilities to authorized distributors.Please contact your dealer for technical support andinstallation troubleshooting. Product technical supportis available for all Seagate products by calling theSeaFAX™, SeaFONE™, SeaTDD™, or SeaBOARD™services. These are toll calls if you dial from outside ofthe number’s local dialing area. Seagate also has aforum on CompuServe.SeaFAX:USA (408) 438-2620; England 44-62-847-7080Use a touch-tone telephone to access Seagate’s auto-mated FAX system and select technical support infor-mation by return FAX. This service is available 24 hoursa day, 7 days a week.CompuServe ForumOnline support for Seagate products is available onCompuServe. This includes an extensive question andanswer message base, downloadable utilities, and docu-mentation files in Adobe™ Acrobat™ format which youcan download and view from your own computer. Type“Go Seagate” to access this service. Page 13 Barracuda 4 Installation Guide, Rev. E11SeaFONE: (408) 438-8222Technical support specialists are available 8:00A.M. to5:00 P.M. PST, Monday through Friday. Recorded tech-nical information for selected Seagate products is pro-vided while you are on hold. Recordings are accessible24 hours a day, 7 days a week.SeaTDD: (408) 438-5382TDD is a telecommunication device for the deaf wheretwo people can communicate using a keyboard con-nected to the phone line. A TDD device is required toaccess this service, which is available 8:00A.M. to5:00 P.M. PST, Monday through Friday.SeaBOARD:The Seagate Technical Support Bulletin Board System(BBS) is available 24 hours a day, 7 days a week. Amodem is required to access this service. The commu-nications software must be set for 8 data bits, no parity,and 1 stop bit (8N1). All BBS numbers operate at 9600baud max. With this service you can access:• Specifications and jumper configurations for Seagateproducts• Reprints of Seagate documentation• A directory of information and helpful utilities that youcan download to your own computer Page 14 12Barracuda 4 Installation Guide, Rev. ETelephoneLocationnumberUSA, Mexico, Latin America(408) 438-8771England44-62-847-8011Germany49-89-140-9331Singapore65-292-6973Australia61-2-756-2359Canada(416) 856-5581France33-1-40-67-1034Korea82-2-556-7294 Page 15 Barracuda 4 Installation Guide, Rev. E13Figure 1. Barracuda 4 disc drive (N/ND)General descriptionBarracuda 4 disc drives are high-speed data storagedevices. There are several models of this disc drive (seeFigure 1, 2, or 3). Specifications and power require-ments for the drives are listed following the figures.The drive is a component for installation in an enclosuredesigned for the drive. This is often a rack within thesystem or an external enclosure designed to house oneor more disc drives. In either case, the disc drive mustreceive adequate cooling (refer to “Providing adequatecooling”) and it must be sufficiently grounded andshielded from emissions. The Barracuda 4 ProductManual (part number 83328880) contains guidelinesfor a properly designed enclosure.SCSI I/OConnectorDC Power ConnectorJ4J01 Page 16 14Barracuda 4 Installation Guide, Rev. ESCSI I/OConnectorDC PowerConnectorJ4J01Pin 1J5Figure 3. Barracuda 4 disc drive (WC/DC)Figure 2. Barracuda 4 disc drive (W/WD)J4J6 Page 17 Barracuda 4 Installation Guide, Rev. E15Characteristics of ST15150 drivesN/NDW/WD/WC/DCSCSI-2 Interface1FastFast & WideCapacityUnformatted5,062 Mbytes 5,062 MbytesFormatted24,294 Mbytes 4,294 MbytesRecordingCylinders (user accessible) 3,7113,711Read/Write heads2121Servo heads11Avg bytes/track64,16064,160ModulationRLL 1,7 code RLL 1,7 codeSynchronous SCSI rateMax burst transfer10 Mbytes/sec 20 Mbytes/secSeek time3Average read8.0 msec8.0 msecAverage write9.0 msec9.0 msecDisc rotationRPM7,2007,200Average latency4.17 msec4.17 msecMulti-segmented cachePhysical1,024 Kbytes 1,024 KbytesAvailable to user977 Kbytes977 Kbytes1Can also be operated according to SCSI-1 protocol.2Standard factory units are formatted as follows:512 data bytes per sector9 spare sectors per cylinder1 cylinder at the inner track reserved for spares3Not including on-board controller overhead. Page 18 16Barracuda 4 Installation Guide, Rev. EDC power requirementsN/W/WCND/WD/DC+5V11+12V+5V11+12VVoltage regulation5± 5%± 5%2± 5%± 5%2AmpsMax operating currentDC 3σ 10.950.951.190.95Average idle currentDC X 1, 120.630.780.690.78Max starting currentPeak DC 3σ 3, 60.932.181.022.18Peak AC 3σ3–3.10–3.10Delay motor startMax DC 3σ 1, 40.950.100.940.10Peak operating currentTypical DC X 1, 100.920.861.130.86Max DC 3σ 10.950.951.190.95Max (peak) AC 3σ1.081.81.951.8Track following atOD DC X 10.910.800.970.80ID DC X 10.890.860.960.86Read trackOD DC 3σ 1, 140.970.891.390.89AC 3σ1.051.101.961.10SeekingTypical DC X 1, 130.911.100.981.10Max DC 3σ 10.921.201.071.20Max (peak) AC 3σ1.051.871.71.87 Page 19 Barracuda 4 Installation Guide, Rev. E1711Measured with average reading DC ammeter. Instanta-neous +12V current peaks will exceed these values.12A –10% tolerance is permissible during initial start ofspindle and must return to ±5% before 7,200 RPM isreached. The ±5% must be maintained after the drivesignifies that its power-up sequence has been completedand that the drive is able to accept selection by the hostinitiator.13See the +12V current profile in the Barracuda 4 ProductManual (publication number 83328880).14This condition occurs when the Motor Start Option isenabled and the drive has not yet received a Start Motorcommand.15See “Conducted noise immunity” in the Barracuda 4Product Manual. Specified voltage tolerance is inclusiveof ripple, noise, and transient response.16At power-up, the motor current regulator limits the 12Vcurrent to an average value of less than 2.18A, althoughinstantaneous peaks may exceed this value. These peaksshould measure 5 msec duration or less.17Minimum current loading for each supply voltage is notless than 3% of the maximum operating current shown.18The +5V and +12V supplies employ separate groundreturns.No terminator power. See Section 11.7.3.4 in the Barra-cuda 4 Product Manual.continued Page 20 18Barracuda 4 Installation Guide, Rev. Econtinued from previous page19Where power is provided to multiple drives from a com-mon supply, careful consideration for individual drivepower requirements should be noted. Where multipleunits are powered on simultaneously, the peak startingcurrent must be available to each device.10Operating condition is defined as a third stroke seek atOD and read one track. A command is issued every 0.063sec for N/W/WD/WC/DC drives (0.075 sec for ND drives).11No terminator power. See 11.7.3.4 in the Barracuda 4Product Manual.12All power saving features enabled; ASA II code only.13Seeking is defined as a third stroke seek at OD. Acommand is issued every 20 msec.14Read track is defined as repeat reads of track 15 with a60% duty cycle for N/ND drives, 74% duty cycle for Wdrives, 32% duty cycle for WC drives, 44% duty cycle forWD drives, and 50% duty cycle for DC drives. Page 21 Barracuda 4 Installation Guide, Rev. E19Initial setup informationThe general information beginning on this page appliesto all of the Barracuda 4 models. After reading thegeneral information topics, refer to the appropriatedrive-specific section listed below for additional infor-mation about configuring and installing your particularmodel.Drive modelsPageST15150N/ND35ST15150W/WD40ST15150WC/DC46General informationThe following general information topics are discussed:• SCSI ID jumpers• Drive termination• Synchronizing spindles• Other applicable jumper options• Providing adequate cooling• Mounting the drive and connecting cables• Formatting the drive Page 22 20Barracuda 4 Installation Guide, Rev. ESCSI ID jumpersEach device on the SCSI chain must have a uniqueSCSI ID. The host system’s SCSI controller usuallyuses the highest-numbered ID available; therefore thelower-numbered SCSI IDs are normally used for otherSCSI devices such as this Barracuda disc drive.Most Barracuda disc drives are factory set with theSCSI ID set at 0. To change the SCSI ID, refer to theappropriate drive section for your model.Note. Most SCSI controllers (host adapters) allow youto skip a SCSI ID. For example, you can have ID0,ID1, and ID3 (skipping ID2). Other controllers donot allow this; refer to your system or controlleruser’s manual for details about its requirementsfor proper SCSI device installation.After completing the installation process, ifthe drive’sLED does not show on/off activity when the host istrying to communicate with the drive, a duplicate SCSIID may be the problem. If this is the case, change theID so that each device on the SCSI chain has its ownunique ID. Also check your system or controller user’smanualtoensurethat you havenot violatedits SCSIIDnumbering recommendations. Page 23 Barracuda 4 Installation Guide, Rev. E21Drive terminationIf you are installing the drive in a system that has otherSCSI devices installed, terminate only the end deviceson the SCSI chain. A SCSI “device” is any disc drive,scanner, tape backup unit, or other piece of hardwareconnected to your system using the SCSI bus.The top example in Figure 4 shows an internal hard discat one end of the SCSI bus with the SCSI controller atthe other end (both are terminated). The bottom ex-ample shows two additional SCSI devices connectedexternally—this means the SCSI controller is no longeron the end of the SCSI chain and should not be termi-nated.For information about how to terminate your drive, referto the appropriate drive-specific section.Figure 4. SCSI bus terminationInternalSCSI deviceInternalSCSI deviceControllerExternalSCSI deviceExternalSCSI deviceExternalSCSIcableInternal SCSI cableTerminateInternalSCSI deviceInternalSCSI deviceControllerInternal SCSI cableTerminate Page 24 22Barracuda 4 Installation Guide, Rev. ETerminator powerYouusually will not needto changethisoptionand cannormally leave the drive configured as it was shippedfrom the factory. For information about how to changethe terminator power option on your drive, refer to theappropriate drive-specific section.Synchronizing spindles (optional)If you are installing two or more Barracuda drives, youmay synchronize their spindles to reduce the latencyassociated with switching from one drive to another.Spindle sync cables are used to connect the drives.After connecting each drive with spindle sync cables,designate a master spindle sync reference source. Thismaster source is usually a disc drive located on thesame SCSI bus as the other drives you want to synchro-nize with. To designate a drive as the master, use SCSIinterface commands. Refer to theBarracuda 4 ProductManual for information about using these commands.For information about how to synchronize the spindlesfor your drive, refer to the appropriate drive-specificsection.Other applicable jumper optionsBarracuda 4 drives are designed for use in a variety ofsystems. Some installations may require you to changeone or more of the other jumpers to meet specific Page 25 Barracuda 4 Installation Guide, Rev. E23system requirements; however, in most cases, you willnot need to change any of these jumpers for normaldrive operation.Providing adequate coolingThe enclosure design must ensure adequate cooling forthe drive. The maximum ambient temperature is 50oC.The drive’s product manual (83328880) describes howto evaluate the air-flow design. The evaluation consistsof ensuring that the case temperature of certain criticalcomponents remains within acceptable limits duringdrive operation.We recommend orienting the drive or directing the airflow in a way that creates the least amount of air-flowresistance while providing air flow above the circuitboards and around the head and disc assembly (HDA).Also, choose the shortest possible path between the airinlet and exit. This minimizes the distance traveled byair that is heated by the drive and by other nearby heatsources.Figure 5 shows two design approaches with one ormore fans used to generate air flow. The air-flow pat-terns can be created by the fans either pushing ordrawing air. The overall flow pattern can be directedfrom front to back, back to front, or side to side. Page 26 24Barracuda 4 Installation Guide, Rev. EKühlung des SystemsDie Gehäusekonstruktion muß eine ausreichendeKühlung des Laufwerkes gewährleisten. DieUmgebungstemperatur darf maximal 50oC betragen.Die Produkthandbuch Barracuda 4 (Dokument83328880) enthalten Anweisungen zur Beurteilung derLuftstromkonstruktion. Die Beurteilung mußsicherstellen, daß sich die Gehäusetemperaturbestimmter kritischer Komponenten bei Laufwerkbetriebinnerhalb zugelassener Grenzen hält.Wir empfehlen, das Laufwerk so zu orientieren oder denLuftstrom so zu lenken, daß der geringsteLuftstromwiderstand erzeugt wird und gleichzeitig einLuftstrom über den Platinen und um die Kopf- undFestplatteneinheit (HDA) gegeben ist. Wählen Sie einenmöglichst kurzen Weg zwischen Lufteinlaß und -auslaß.Dadurch wird die Strecke, die die vom Laufwerk undanderen nahegelegenen Hitzequellen aufgewärmte Luftzurücklegt, auf ein Minimum beschränkt.Abbildung 5 zeigt zwei Konstruktionsmöglichkeiten, beidenen ein oder mehrere Lüfter den Luftstrom erzeugen.Der Luftstromverlauf wird durch die Lüfter gesteuert,die entweder Luft einblasen oder abziehen. Generellkann der Luftstrom entweder von vorne nach hintenoder von hinten nach vorne verlaufen. Page 27 Barracuda 4 Installation Guide, Rev. E25Above unitÜber der EinheitUnder unitUnter der EinheitNote. Air flows in the direction shown (back to front)or in reverse direction (front to back)Note. Air flows in the direction shown orin reverse direction (side to side)Above unitÜber der EinheitUnder unitUnter der EinheitHinweis. Luftstrom in der angezeigten Richtung(von vorne nach hinten) oder in umgekehrterRichtung (von hinten nach vorne)Hinweis. Luftstrom in der angezeigten Richtung oder inumgekehrter Richtung (von Seite zu Seite)Figure 5. Suggested air flowAbbildung 5. Empfohlener Luftstromverlauf Page 28 26Barracuda 4 Installation Guide, Rev. EMounting the drive and connecting cablesNote.This mounting procedure does not apply to WC orDC model drives. To mount a WC or DC drive,plug the drive into the system's single connectorattachment (SCA) position on the system's backpanel.Do not touch the connector pins or any components onthe control board without observing static-dischargeprecautions. Always handle the drive by the frame only.The drive may be mounted in any orientation (horizon-tally, vertically, and any combination thereof); however,you must ensure that the drive receives adequate airflow for cooling.1. Mount the drive to the host system’s chassis usingfour 6-32 UNC screws. Two mounting holes are ineach side of the drive and there are four mountingholes in the bottom of the drive. See Figures 6, 7 or 8.The maximum length that the screws should ex-tend into the chassis mounting holes is 0.15 inch(3.81 mm), measured from the outer surface of thechassis. Tighten the screws down evenly. Do notover-tighten or force the screw if it does not seem toscrew in easily, because this means the threads arenot properly aligned. In this case, back the screw outand try again. Page 29 Barracuda 4 Installation Guide, Rev. E27Installation des Laufwerkesund Anschluß der KabelBeachten Sie beim Handhaben und Anfassen derAnschlußstifte und Komponenten dieVorsichtsmaßnahmen zur Verhinderung statischerAufladung. Fassen Sie das Laufwerk nur am Rahmen an.Das Laufwerk kann in beliebiger Orientierung (horizon-tal, vertikal oder schräg) installiert werden; jedoch mußdafür gesorgt werden, daß ein ausreichender Luftstromzur Kühlung des Laufwerkes vorhanden ist.1. Befestigen Sie das Laufwerk mit vier 6-32-UNC-Schrauben am Gehäuse des Host-Systems. Diebeiden Seiten des Laufwerkes sind mit jeweils zweiBefestigungslöchern versehen, die Unterseite desLaufwerkes weist vier weitere Befestigungslöcherauf. Siehe Abbildung 6, 7 und Abbildung 8.Gemessen von der Außenfläche des Gehäusesdürfen die Schrauben maximal 3,81 mm in dieBefestigungslöcher des Gehüuses hineinragen. DieSchrauben müssen gleichmäßig, jedoch nicht zufest, angezogen werden. Wenn sich eine Schraubenicht ohne Widerstand einschrauben läßt, sind dieGewinde nicht korrekt aneinander ausgerichtet. Indiesem Fall die Schraube nicht in das Gewindelochforcieren, sondern die Schraube herausnehmen underneut in das Gewindeloch einführen. Page 30 28Barracuda 4 Installation Guide, Rev. ETURFEDKLAM[3]NCPBSHGJNotes:[1][2][3][4]Inches Millimeters5.7404.0001.620.6154.000.2501.7503.7502.3705.4205.5655.965.195.3601.7254.100.1900.015145.80 101.60 41.14 15.68 101.60 6.35 44.45 95.25 60.20 137.69 141.35 151.41 4.95 9.14 43.82 104.14 4.83 0.381ABCDEFGHJKLMNPRSTU±±±±±±±±±±±±±±±±±max0.0100.0100.0340.0200.0050.0050.0100.0100.0100.0200.0100.0200.0150.0150.0100.0100.010±±±±±±±±±±±±±±±±±max.25.25.86.50.13.13.25.25.25.50.25.50.38.38.25.25.25Mounting holes two on each side, 6-32 UNC. Max screw length into side of drive is 0.15 in. (3.81 mm).Mounting holes four on bottom, 6-32 UNC. Max screw length into bottom of drive is 0.15 in. (3.81 mm).Power and interface connections.Decorative front panel.[4][2][1]Figure 6. Dimensions (ST15150N/ND)Abbildung 6. Laufwerkabmessungen Page 31 Barracuda 4 Installation Guide, Rev. E29Figure 7. Dimensions (ST15150W/WD)Abbildung 7. LaufwerkabmessungenTURF[1]EDKLAM[3].050 minimum clearanceNCPBSHGJNotes:[1][2][3][4]Inches Millimeters5.7404.0001.620.6154.000.2501.7503.7502.3705.4205.5655.968.190.3471.7254.100.1900.0150.265145.80 101.60 41.14 15.68 101.60 6.35 44.45 95.25 60.20 137.69 141.35 151.58 4.826 8.81 43.82 104.14 4.83 0.3816.74 ABCDEFGHJKLMNPRSTUV±±±±±±±±±±±±±±±±±max±0.0100.0100.0280.0200.0050.0050.0100.0100.0100.0200.0100.0350.0150.0150.0100.0100.0100.020±±±±±±±±±±±±±±±±±max±.25.25.68.50.13.13.25.25.25.50.25.90.38.38.25.25.25.50Mounting holes two on each side, 6-32 UNC. Max screw length into side of drive is 0.15 in. (3.81 mm).Mounting holes four on bottom, 6-32 UNC. Max screw length into bottom of drive is 0.15 in. (3.81 mm).Power and interface connections.Decorative front panel.[4][2]V Page 32 30Barracuda 4 Installation Guide, Rev. EFigure 8. Dimensions (ST15150WC/DC)Abbildung 8. LaufwerkabmessungenTURF[1]EDKLAM[3]NCPBSHGJNotes:[1][2][3][4][5]Inches Millimeters5.7404.0001.615.6204.000.2501.7503.7502.3655.4205.5655.968.181.3231.7254.100.1900.0150.265145.80 101.60 41.02 15.75 101.60 6.35 44.45 95.25 60.07 137.52 141.22 151.58 4.597 8.20 43.82 104.14 4.83 0.3818.50 ABCDEFGHJKLMNPRSTUV±±±±±±±±±±±±±±±±±max±0.0100.0100.0340.0200.0050.0050.0100.0100.0100.0200.0100.0350.0150.0150.0100.0100.0100.020±±±±±±±±±±±±±±±±±max±.25.25.86.50.13.13.25.25.25.50.25.90.38.38.25.25.25.50Mounting holes two on each side, 6-32 UNC. Max screw length into side of drive is 0.15 in. (3.81 mm).Mounting holes four on bottom, 6-32 UNC. Max screw length into bottom of drive is 0.15 in. (3.81 mm).Power and interface connections.Decorative front panel.Connector is centered within “B” dimension ± 0.02 in.[4][5][2]0.050" minimum clearance Page 33 Barracuda 4 Installation Guide, Rev. E312. Verify that all connections between the drive and thehost system are correctly installed.2. Prüfen Sie, ob alle Verbindungen zwischen demLaufwerk und dem Host-System korrekt hergestelltsind.3. Verify that you have correctly installed SCSI ID jump-ers (see Figure 10, 15 or 21).3. Stellen Sie sicher, daß die SCSI-Kennungsbrncken.Siehe Abbildung 10, 15 und Abbildung 21.4. Connect the 50-pin SCSI cable into the drive’s SCSIconnector (shown earlier in Figures 1, 2 and 3). Takecare not to stretch or crimp this cable, and do notblock the system’s cooling air flow with the cable.The drive receives DC power through a 4-pin con-nector mounted next to the SCSI connector. Theoutput of a power supply must meet SELV (safetyextra low voltage) as defined in IEC 950. Figure 9provides the pin information for the DC power con-nector. To connect the DC power cable to the drive,simply insert the cable end into the drive’s DC powerconnector.4. Schließen Sie das 50-polige SCSI-Kabel an denSCSI-Steckverbinder des Laufwerkes an (wie bereitsin Abbildung 1, 2 und Abbildung 3 gezeigt). Das Kabel Page 34 32Barracuda 4 Installation Guide, Rev. Edarf nicht gedehnt oder gedrückt werden und es darfden Luftstrom zur Kühlung des Systems nichtbehindern.Das Laufwerk wird über einen 4-poligen, neben demSCSI-Anschluß befestigten Steckverbinder mitGleichstrom versorgt. Der Ausgang eines Netzteilsmuß SELV (safety extra low voltage) nach IEC 950entsprechen. Abbildung 9 zeigt die Steckerbelegundfür den Gleichstromanschluß. Zum Anschluß desGleichstromkabels an das Laufwerk das Kabelendein den Gleichstromanschluß des Laufwerkes stecken.Figure 9. DC power connectorAbbildung 9. GleichstromanschlußNote. Signal ground on the power control board (PCB)and the head and disc assembly (HDA) are con-nected together in this drive and you cannotseparate them. The equipment in which you havePin1234Power+12V+12V return+ 5V return+ 5V4 3 2 1Pin1234Gleichstrom+12 V+12 V Rückleitung+ 5 V Rückleitung+ 5 V Page 35 Barracuda 4 Installation Guide, Rev. E33mounted the drive is connected directly to theHDA and PCB without electrically isolating shockmounts. Maximizing the conductive contact areabetween HDA ground and system ground mayreduce radiated emissions.If you do not want the system chassis to beconnected to the HDA/PCB ground, you mustprovide a nonconductive (electrically isolating)method of mounting the drive in the host system.This may increase radiated emissions and is thesystem designer’s responsibility.Hinweis:Die Signalerde auf der Stromregelungskarte(PCB) und der Kopf- und Festplatteneinheit (HDA)sind in diesem Laufwerk miteinander verbundenund können nicht getrennt werden. Das Gerät, indas Sie das Laufwerk eingebaut haben, ist ohneelektrisch isolierende Stoßdämpfer direkt an dieHDA und PCB angeschlossen. Dieelektromagnetische Strahlung kann reduziertwerden, indem Sie eine möglichst große leitendeKontakfläche zwischen der HDA-Erdung und derSystemerdung vorsehen.Wenn Sie das Systemgehäuse nicht an die HDA/PCB-Erdung anschließen wollen, müssen Sie Page 36 34Barracuda 4 Installation Guide, Rev. Edas Laufwerk auf nichtleitende Weise (galvanischisoliert) im Host-System einbauen. Die daraus u.U.resultierende verstärkte elektromagnetischeStrahlung fällt in den Zuständigkeitsbereich desSystemdesigners.5. Replace the host system’s cover.5. Setzen Sie das Gehäuseoberteil des Host-Systemswieder auf.Formatting the driveWarning. Formatting a drive erases all user data. Besure you understand this principle beforeformatting any hard disc drive.It is not necessary to format a drive thathas been previously used to store data, un-less your intention is to erase all user data.1. Turn on DC power.2. Boot the system from a system floppy disc or from apreviously installed hard disc drive if there is one.3. Format the drive. The Barracuda 4 disc drive isdesigned to operate with a variety of operating sys-tems. Your system or SCSI controller manuals haveinformation about formatting and setting up the drive. Page 37 Barracuda 4 Installation Guide, Rev. E35Setting the SCSI ID jumpersUse the J4 connector to set the SCSI ID (Figure 10). Tochange the SCSI ID, install jumpers on the appropriatepins as shown in the illustration.Figure 10. Setting the SCSI IDSCSI ID = 0 (default)SCSI ID = 7SCSI ID = 1SCSI ID = 2SCSI ID = 3SCSI ID = 4SCSI ID = 5SCSI ID = 6J4ID2ID1ID0Select SCSI ID by placingjumpers as shown below.SCSIConnectorDC PowerConnectorJ4Pin 1N/ND drives Page 38 36Barracuda 4 Installation Guide, Rev. ETerminating the driveTo terminate the ST15150N drive, enable the perma-nently mounted IC active terminators by installing anEnable Drive Terminator jumper on J01 pins 1 and 2 asshown in Figure 11. If you install one of these modelsand it is not on the end of the SCSI bus, remove thejumper to disable the permanently mounted IC termina-tors and thereby remove internal termination from thedrive.The ST15150ND drive does not have internal termina-tors or any way of adding internal termination. You mustprovide external active termination (ANSI SCSI-2 Alter-native 2) to the drive when termination is required.Pin 1J4J01J01Pin 1Pin 2Pin 3Enable drive terminator.Disable drive terminator.Figure 11. Terminating the driveN/ND drives Page 39 Barracuda 4 Installation Guide, Rev. E37Terminator powerThere are four possible terminator power configurationsfor the ST15150N drive (see Figure 12). You will notnormally need to change this option and can leave thedrive configured as it was shipped from the factory.The ST15150ND drive should be configured with ajumper connecting J01 pins 1 and 3 (and no jumper onJ01 pins 2 and 4) as illustrated in Figure 12.Figure 12. Setting terminator power jumpersTerm. power from drive (default).ST15150NST15150NDTerm. power from SCSI bus.Term. power to SCSI bus.Term. power to SCSI bus and drive.J01Pin 1Pin 2Pin 3J4J01PowerConnectorTerm. power to SCSI bus. (All other J01 jumper positions are invalid for ST15150ND drives.)J01Pin 1Pin 2Pin 3N/ND drives Page 40 38Barracuda 4 Installation Guide, Rev. ESynchronizing spindlesUse pins 1 and 2 on the J4 connector to attach thespindle sync cable. See Figure 13.Figure 13. Spindle sync connectorsSpindle sync reference index signal(REFSIG+).J4SSCSpindle Sync Cable Connector(SSC). These pins are used to connect a spindle sync cable.Ground (GND).SCSIConnectorDC PowerConnectorJ4Pin 1Pin 2N/ND drives Page 41 Barracuda 4 Installation Guide, Rev. E39Other applicable jumper optionsSeveral other jumper options are available as illustrated.Figure 14. Additional jumper optionsWrite Protect = On (disables writing).Write Protect = Off (enables writing – default).J4RESWPLEDWrite Protect option (WP)Reserved for future use.Reserved (RES)SCSIConnectorDC PowerConnectorJ4Pin 1Pin 5 (top pin) is negative (cathode), Pin 6 (bottom pin) is positive (anode).Remote LED Connector**Note to subsystem designers: In Europe, a red LED indicates an error or warning condition. For this reason, you may want to use a color other than red with this connection.RESEnable parity check of SCSI bus data (default).PARMTRDMSParity Check option (PAR)Disable parity check.Enable motor start. The drive waits for the Start Unit command from the host before starting the spindle motor.Motor Start option (MTR)Disable motor start (default). The drive starts according to the Delay Motor Start option setting as described below.Motor start delay equal to the SCSI ID multiplied by 10 seconds. For example, if the SCSI ID=2, the drive starts in 20 seconds.Delay Motor Start option (DMS) (valid only if the Motor Start jumper is not connected)Disable the delay motor start option (default).N/ND drivesN/ND drives Page 42 40Barracuda 4 Installation Guide, Rev. ESetting the SCSI ID jumpersUse the J5 connector to set the SCSI ID (Figure 15). Tochange the SCSI ID, install jumpers on the appropriatepins as shown in the illustration.DC PowerConnectorSCSI I/OConnectorSCSI ID = 8SCSI ID = 9SCSI ID = 10SCSI ID = 11SCSI ID = 12SCSI ID = 13SCSI ID = 14SCSI ID = 15SCSI ID = 0 (default)SCSI ID = 1SCSI ID = 2SCSI ID = 3SCSI ID = 4SCSI ID = 5SCSI ID = 6SCSI ID = 7J54P3P 2P1PPin 1Pin 1ID3ID2ID1ID0J5Figure 15. Setting the SCSI IDW/WD drives Page 43 Barracuda 4 Installation Guide, Rev. E41Figure 16. Terminating the drive.Terminating the driveTo terminate the ST15150W drive, enable the perma-nently mounted IC active terminators by installing anEnable Drive Terminator jumper on J4 pins 11 and 12 asshown in Figure 16. If you install one of these modelsand it is not on the end of the SCSI bus, remove thejumper to disable the permanently mounted IC termina-tors and thereby remove internal termination from thedrive.The ST15150WD drive does not have internal termina-tors or any way of adding internal termination. You mustprovide external active termination (ANSI SCSI-2 Alter-native 2) to the drive when termination is required.Pin 1J4J01Enable drive terminator.Disable drive terminator.J4Pin 1W/WD drives Page 44 42Barracuda 4 Installation Guide, Rev. ETerminator powerThere are four possible terminator power configurationsfor the ST15150W drive (see Figure 17). You will notnormally need to change this option and can leave thedrive configured as it was shipped from the factory.The ST15150WD drive should be configured with ajumper connecting J01 pins 1 and 3 (and no jumper onJ01 pins 2 and 4) as illustrated in Figure 17.Figure 17. Setting terminator power jumpersPin 1J4J01Term. power from drive.ST15150W/WDTerm. power from SCSI bus.Term. power to SCSI bus.Term. power to SCSI bus and drive.J01Pin 1Pin 2Pin 3**** Valid for single-ended drives only.PowerConnectorW/WD drives Page 45 Barracuda 4 Installation Guide, Rev. E43Synchronizing spindlesUse pins 11 and 12 on the J5 connector to attach thespindle sync cable. See Figure 18.Figure 18. Spindle sync connectorsSpindle sync reference index signal (REFSIG+).Spindle Sync Cable Connector (SSC)These pins are used to connect aspindle sync cable.Ground (GND).SSCJ5DC PowerConnectorSCSI I/OConnectorJ5Pin 1W/WD drives Page 46 44Barracuda 4 Installation Guide, Rev. EOther applicable jumper optionsOther option jumpers are available as illustrated inFigures 19 and 20.Figure 19. Additional jumper optionsPin 1J4J01PowerConnectorWrite Protect = On (disables writing).Write Protect = Off(enables writing – default).J4RESWrite Protect option (WP)Reserved for future use.Reserved (RES)Pin 9 (top pin) is negative (cathode),Pin 10 (bottom pin) is positive (anode).Remote LED Connector**Note to subsystem designers: In Europe, a red LED indicates an error or warning condition. For this reason, you may want to use a color other than red with this connection.RESWPJ5J5Pin 1W/WD drives Page 47 Barracuda 4 Installation Guide, Rev. E45Figure 20. Additional jumper optionsEnable parity check of SCSI bus data(default).J4PARMTRDMSParity Check option (PAR)Disable parity check.Enable motor start. The drive waits for the Start Unit command from the host before starting the spindle motor.Motor Start option (MTR)Disable motor start (default). The drive starts according to the Delay Motor Start option setting as described below.Motor start delay equal to the SCSI IDmultiplied by 10 seconds plus 3 seconds. For example, if the SCSI ID = 2, the drive starts in 23 seconds ((2x10)+3 = 23).Delay Motor Start option (DMS)(valid only if the Motor Start jumper is not connected)Disable the delay motor start option(default).Pin 1J4J01W/WD drives Page 48 46Barracuda 4 Installation Guide, Rev. ESetting the SCSI ID jumpersThe SCSI ID for WC and DC drives is normally set overthe SCSI bus by the host system using connectorcontacts 39 (ID0), 40 (ID2), 79 (ID1), and 80 (ID3).Systems designers may, optionally, install a remoteoperator panel connection to set the SCSI ID. Figure 21illustrates the SCSI ID pins used for this purpose.Terminating the driveST15150WC and ST15150DC drives do not have inter-nal terminators or any other way of adding internaltermination to the drive. You must provide single-endedexternal active termination (ANSI SCSI-2 Alternative 2)to these drives when termination is required.Synchronizing spindlesSpindle synchronization for WC and DC drives is nor-mally handled on the SCSI bus by the host system usingconnector contact 37 for the spindle sync referencesignal. System designers may, optionally, install a spindlesync cable using pin 6 on the J4 connector to provide+SSREF (see Figure 21).WC/DC drives Page 49 Barracuda 4 Installation Guide, Rev. E47Connecting remote LEDsRemote LED connections are provided on the J4 con-nector (see Figure 21). You can connect 2-pin remoteLEDs using these connections. Attach the (-) lead to theappropriate pin and then attach the (+) lead to the pinlabelled +5V.WC/DC drives Page 50 48Barracuda 4 Installation Guide, Rev. EWC/DC drivesFigure 21. Jumper optionsSCSI ID0J4Pin 1Pin 1J4Fault LED pin (–)SCSI ID1Vendor UniqueSCSI ID2Spindle SyncSCSI ID3Drive Activity LED (–)NC+5VGroundWrite ProtectParity EnableReserved Page 51 Barracuda 4 Installation Guide, Rev. E49 Page 52 50Barracuda 4 Installation Guide, Rev. ESeagate Technology, Inc.920 Disc Drive, Scotts Valley, CA 95066-4544, USAPublication Number: 83328870, Rev. E, Printed in USA