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Seagate ST31250W/WD/WC/DC manual

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Table of contents for the manual

  • Page 1

    BAR RAC U DA 2LP Disc Drive ST31250N/ND ST31250W/WD/WC/DC ST32550N/ND ST32550W/WD/WC/DC Installation Guide[...]

  • Page 2

    Contents Preface .................................................................. 1 Electrostatic discharge protection ........................... 1 Important safety information and precautions ......... 2 Wichtige Sicherheitshinweise ............................... 5 Technical support services ..................................... 10 General des[...]

  • Page 3

    Barracuda 2LP Installation Guide, Rev. E 1 Preface This manual cont ains information for users of the Se agate ® ST3 1 250 and ST 32550 Barracuda™ 2LP SCSI disc drive s. I t prov i des su ppor t services , p e r for man ce specificat ions, and initia l setup info rmation. Ad ditional inform ation is avai lable in the Bar racuda 2L P Pr o d uct M[...]

  • Page 4

    2 Barracuda 2LP Installation Guide, Rev. E • Ground yourself to the drive whenever the drive elec- tronics are or will be exposed. Connect yourself to ground with a wrist strap (Seagate part number 12263496). Connection may be made to any grounded metal assembly. As a general rule, remember that you and the drive electronics must all be grounded [...]

  • Page 5

    Barracuda 2LP Installation Guide, Rev. E 3 The procedures in this manual and labels on the unit contain warnings and cautions that must be carefully read and followed to minimize or eliminate the risk of personal injury. The warnings point out conditions or practices that may endanger you or others. The cautions point out conditions or practices th[...]

  • Page 6

    • Ensure that the internal temperature of the rack or cabinet does not exceed the limits defined for the drive when the drive is mounted in an equipment rack or cabinet. When units are stacked vertically, pay special attention to the top where temperatures are usually highest. • Follow the precautions listed above in “Electrostatic discharge [...]

  • Page 7

    Typical applications of these disc drives include cus- tomer packaging and subsystem design. Safety agen- cies conditionally certify component assemblies, such as the Barracuda disc drive, based on their final acceptabil- ity in the end-use product. The subsystem designers are responsible for meeting these conditions of acceptability in obtaining s[...]

  • Page 8

    werden. Wir empfehlen die Verfahren in diesem Handbuch als effektive Methoden zur Wartung und Reparatur der Einheit. Einige Verfahren erfordern Spezialwerkzeuge; diese müssen zur sachgemäßen Ausführung der Wartungsarbeiten und aus Sicherheitsgründen den Empfehlungen entsprechend verwendet werden. Die Verfahren in diesem Handbuch und die Aufkle[...]

  • Page 9

    persönliche Sicherheit noch die Leistung der Einheit gefährdet. Beachten Sie in jedem F al l d ie fo l ge nd e n Wa r n- un d Vorsichtshinweise: • Führen Sie alle Wartungsarbeiten entsprechend den Anweisungen in diesem Handbuch aus. • Beachten Sie alle Warn- und Vorsichtshinweise in diesem Handbuch. • Treffen Sie beim Betrieb oder bei der [...]

  • Page 10

    • Befolgen Sie die oben unter “Electrostatic Discharge Protection” angegebenen Sicherheitsmaßnahmen. • Nehmen Sie keine Platinen aus dem Laufwerkgehäuse. Wenn eine Platine defekt ist, muß das gesamte Laufwerk zur Reparatur eingeschickt werden. Die Herausnahme von Platinen durch anderePersonen als die für die werkseitige Reparatur zustä[...]

  • Page 11

    geltenden Standards zu gewährleisten. Zu den typischen Anwendungen dieser Festplattenwerke zählen Systemeinbau durch den Kunden und die Konstruktion von Untersystemen. Sicherheitsbehörden gewähren eine bedingte Zulassung für Komponenten wie das Barra- cuda-Festplattenlaufwerk vorbehaltlich der endgültigen Zulasssung im Endprodukt. Designer vo[...]

  • Page 12

    Technical support services Seagate Technology provides technical support litera- ture and diagnostic utilities to authorized distributors. Please contact your dealer for technical support and installation troubleshooting. Product technical support is available for all Seagate products by calling the SeaFAX™, SeaFONE™, SeaTDD™, or SeaBOARD™ [...]

  • Page 13

    SeaFONE: (408) 438-8222 Technical support specialists are available from 8:00 A . M . to 5:00 P . M . PST, Monday through Friday. Recorded technical information on selected Seagat e products is provided while you are on hold. Recordings are acces- sible 24 hours a day, 7 days a week. SeaTDD: (408) 438-5382 TDD is a telecommunication device for the [...]

  • Page 14

    Location Modem number USA, Mexico, Latin America (408) 438-8771 England 44-62-847-8011 Germany 49-89-140-9331 Singapore 65-292-6973 Australia 61-2-756-2359 Canada (416) 856-5581 France 33-1-40-67-1034 Korea 82-2-556-7294 12 Barracuda 2LP Installation Guide, Rev. E[...]

  • Page 15

    Barracuda 2LP Installation Guide, Rev. E 13 Figure 1. Barracuda 2LP disc drive (N/ND model shown) SCSI I/O Connector DC Power Connector General description Barracuda 2LP SCSI disc drives are high-speed, ran- dom- access digital-data storage devices. The drive is a component for installation in an enclosure designed for the drive. This is often a[...]

  • Page 16

    14 Barracuda 2LP Installation Guide, Rev. E Characteristics ST31250 ST32550 Interface Fast SCSI-2 1 Fast SCSI-2 1 Capacity Unformatted 1,205.3 Mbytes 2,541.3 Mbytes Formatted 2 1,020.9 Mbytes 2,147.4 Mbytes Recording Cylinders (user) 3,711 3,510 Read/write data heads 5 11 Servo heads 1 1 Avg bytes/track 64,160 64,160 Seek time 3 Average read 8.0 ms[...]

  • Page 17

    Barracuda 2LP Installation Guide, Rev. E 15 1 Can also be operated according to SCSI-1 protocol. 2 Standard factory units are formatted as follows: 512 data bytes per sector 9 spare sectors per cylinder 1 cylinder at the innter track reserved for spares 3 Not including on-board controller overhead.[...]

  • Page 18

    16 Barracuda 2LP Installation Guide, Rev. E DC power requirements Single-ended Differential + + + + + 5V 11 + + + + + 12V + + + + + 5V 11 + + + + + 12V Voltage regulation 5 ± ± ± ± ± 5% ± ± ± ± ± 5% 2 ± ± ± ± ± 5% ± ± ± ± ± 5% 2 Amps Maximum operating current 1 0.93 0.6 1.17 0.6 Maximum starting current Peak DC 3, 6 0.93 1.35 1.[...]

  • Page 19

    Barracuda 2LP Installation Guide, Rev. E 17 1 Measured with an average reading DC ammeter. Instanta- neous + 12V current peaks will exceed these values. 2 A − 10% tolerance is permissible during initial start of the spindle but must return to ± 5% before reaching 7,200 RPM. The ± 5% must be maintained after the drive signifies that its power-up[...]

  • Page 20

    18 Barracuda 2LP Installation Guide, Rev. E 11 No terminator power. See Section 11.7.3.4 in the Ba r r a - cud a 2LP Product Manual. 12 All power-saving features are enabled (ASA II code only). 13 Seeking is defined as a third-stroke seek at OD. The com- mand is issued every 20 msec. 14 Read track is defined as repeat reads of track 15 with a 78% d[...]

  • Page 21

    Barracuda 2LP Installation Guide, Rev. E 19 Initial setup information The general information beginning on this page applies to all of the Barracuda 2LP drive models. After reading the general information topics, refer to the appropriate drive- specific section listed below for additional information about configuring and installing your particular[...]

  • Page 22

    20 Barracuda 2LP Installation Guide, Rev. E *This mounting procedure does not apply to WC or DC model drives. To mount a WC or DC drive, plug the drive into the system's single connector attachment (SCA) position on the system's back panel. SCSI ID jumpers Each device on the SCSI chain must have a unique SCSI ID. The host system’s SCSI [...]

  • Page 23

    Barracuda 2LP Installation Guide, Rev. E 21 Also check your system or controller user’s manual to ensure that you have not violated its SCSI ID numbering recommendations. Drive termination If you are installing a Barracuda 2LP drive in a system that has other SCSI devices installed, terminate only the end devices on the SCSI chain. A SCSI “devi[...]

  • Page 24

    22 Barracuda 2LP Installation Guide, Rev. E For information about how to terminate your drive, refer to the appropriate drive-specific section. Terminator power You usually will not need to c hange this optio n and c an normally lea ve the drive co nfigured as it was shipped from the fa ctor y . For information about how to change the terminator po[...]

  • Page 25

    Barracuda 2LP Installation Guide, Rev. E 23 Providing adequate cooling The enclosur e design must ensure adeq ua te cooling for the driv e. The ma ximum ambient te mperature i s 50 o C. The d r iv e’s product manual (83328930) describes ho w to ev al uate the ai r -flow desi gn. The e va luation cons ists of e nsuring that the case t emperatures [...]

  • Page 26

    24 Barracuda 2LP Installation Guide, Rev. E Kühlung des Systems Die Gehäusekonstruktion muß eine ausreichende Kühlung des Laufwerkes gewährleisten. Die Umgebungstemperatur darf maximal 50 o C betragen. Die Produkthandbuch Barracuda 2LP (Dokument 83328930) enthalten Anweisungen zur Beurteilung der Luftstromkonstruktion. Die Beurteilung muß sic[...]

  • Page 27

    Barracuda 2LP Installation Guide, Rev. E 25 Figure 3. Suggested air flow Abbildung 3. Empfohlener Luftstromverlauf Above unit Über der Einheit Under unit Unter der Einheit Note. Air flows in the direction shown (back to front) or in reverse direction (front to back) Note. Air flows in the direction shown or in reverse direction (side t[...]

  • Page 28

    26 Barracuda 2LP Installation Guide, Rev. E Mounting the drive and connecting cables Do not touch the connector pins or any components on the control board without observing static-discharge pre- cautions. Always handle the drive by the frame only. The drive may be mounted in any orientation (horizon- tally, vertically, and any combination thereof)[...]

  • Page 29

    Barracuda 2LP Installation Guide, Rev. E 27 Installation des Laufwerkes und Anschluß der Kabel Beachten Sie beim Handhaben und Anfassen der Anschlußstifte und Komponenten die Vorsichtsmaßnahmen zur Verhinderung statischer Aufladung. Fassen Sie das Laufwerk nur am Rahmen an. Das Laufwerk kann in beliebiger Orientierung (horizontal, vertikal oder [...]

  • Page 30

    28 Barracuda 2LP Installation Guide, Rev. E 2. Verify that all connections between the drive and the host system are correctly installed. 2. Prüfen Sie, ob alle Verbindungen zwischen dem Laufwerk und dem Host-System korrekt hergestellt sind. 3. Verify that you have correctly installed jumpers. 3. Stellen Sie sicher, daß die Kennungsbrü cken inst[...]

  • Page 31

    Barracuda 2LP Installation Guide, Rev. E 29 Das Laufwerk wird über einen 4-poligen, neben dem SCSI-Anschluß befestigten Steckverbinder mit Gleichstrom versorgt. Der Ausgang eines Netzteils muß SELV (safety extra low voltage) nach IEC 950 entsprechen. Abbildung 4 zeigt die Steckerbelegung für den Gleichstromanschluß. Zum Anschluß des Gleichstr[...]

  • Page 32

    30 Barracuda 2LP Installation Guide, Rev. E Note. Signal ground on the power control board (PCB) and the head and disc assembly (HDA) are con- nected together in this drive and you cannot sepa- rate them. The equipment in which you have mounted the drive is connected directly to the HDA and PCB without electrically isolating shock mounts. Maximizin[...]

  • Page 33

    Barracuda 2LP Installation Guide, Rev. E 31 Systemgehäuse nicht an die HDA/PCB-Erdung anschließen wollen, müssen Sie das Laufwerk auf nichtleitende Weise (galvanisch isoliert) im Host- Sy ste m ei nba uen . Di e da rau s u .U . resultierende verstärkte elektromagnetische Strahlung fällt in den Zuständigkeitsbereich des Systemdesigners. 5. Rep[...]

  • Page 34

    32 Barracuda 2LP Installation Guide, Rev. E Enabling write cache Write caching is a feature that allows the drive to transfer write data to its own cache, tell the controller that the task is complete, and then actually complete the write at a later time. This improves write performance by freeing the CPU to go on to its next command. Warning. Info[...]

  • Page 35

    Barracuda 2LP Installation Guide, Rev. E 33 Figure 5. Setting the SCSI ID J4 SCSI ID = 1 SCSI ID = 2 SCSI ID = 3 SCSI ID = 4 SCSI ID = 5 SCSI ID = 6 SCSI ID = 7 J4 Pin 1 Pin 1 SCSI ID = 0 (default) (front view of J4) Pin 2 Setting the SCSI ID jumpers Use the J4 connector to set the SCSI ID (see Figure 5). To change the SCSI ID, install jumpers on t[...]

  • Page 36

    Figure 6. Terminating the drive 34 Barracuda 2LP Installation Guide, Rev. E J2 Pin 1 Pin 1 Pin 6 J1 Pin 1 Pin 2 Pin 6 Disable SCSI  terminator Enable SCSI  terminator (default) J1 N/ND drives Terminating the drive ST31250N and ST32550N drives are terminated with permanently mounted IC active terminators. If you install one of these drives and[...]

  • Page 37

    Terminator power There are four possible terminator power configurations for ST31250N and ST32 550 N d rives ( see Fi gure 7). You will not normally need to change this option and can leave the drive configured as it was shipped from the factory. ST31250ND and ST32550ND drives should be config- ured with a jumper connecting J1 pins 1 and 3 (and no [...]

  • Page 38

    36 Barracuda 2LP Installation Guide, Rev. E N/ND drives Synchronizing spindles Use pins 5 and 6 on the J4 connector to attach the spindle sync cable. See Figure 8. Figure 8. Spindle sync connectors J2 J4 Spindle sync  cable connector J4 Pin 1 Pin 1 Spindle Sync Reference Spindle Sync Ground (front view of J4) Pin 2 Pin 1[...]

  • Page 39

    N/ND drives Other applicable jumper options Several other jumper options are available as illustrated. J2 J4 Remote LED  connector* J4 Pin 1 Pin 1 Reserved GND (cathode) POS (anode) (front view of J4) Pin 2 Enable parity check of  SCSI bus (default). Disable parity check. J2 Pin 1 Pin 2 Reserved Pin 1 Note to subsystem designers: In  Europ[...]

  • Page 40

    38 Barracuda 2LP Installation Guide, Rev. E W/WD drives Setting the SCSI ID jumpers Use the J5 connector to set the SCSI ID (Figure 10). To change the SCSI ID, install jumpers on the appropriate pins as shown in the illustration. DC Power Connector SCSI I/O Connector SCSI ID = 8 SCSI ID = 9 SCSI ID = 10 SCSI ID = 11 SCSI ID = 12 SCSI ID = 13 [...]

  • Page 41

    W/WD drives Terminating the drive ST31250W and ST32550W drives are terminated with permanently mounted IC active terminators. If you install one of these drives and it is not on the end of the SCSI bus, disable the terminators by removing the jumper from pins 5 and 6 of connector J1. If you install the drive on the end of the SCSI bus, enable termi[...]

  • Page 42

    40 Barracuda 2LP Installation Guide, Rev. E W/WD drives Terminator power There are four possible terminator power configurations for ST31250W and ST32550W drives (see Figure 12). You will not normally need to change this option and can leave the drive configured as it was shipped from the factory. ST31250WD and ST32550WD drives should be config- ur[...]

  • Page 43

    Barracuda 2LP Installation Guide, Rev. E 41 W/WD drives Synchronizing spindles Use pins 11 and 12 on the J5 connector to attach the spindle sync cable. See Figure 13. DC Power Connector SCSI I/O Connector J5 4P 3P 2P 1P Pin 1 Pin 1 SS J5 Spindle sync  cable connector Spindle Sync Reference Spindle Sync Ground Figure 13. Spindle sync connec[...]

  • Page 44

    42 Barracuda 2LP Installation Guide, Rev. E W/WD drives Other applicable jumper options Other option jumpers are available as illustrated below. J2 Pin 1 Enable parity check of SCSI bus (default). Disable parity check. J2 Pin 1 Pin 2 Reserved Parity Check option Write protect = Off (enables writing – default) Write protect = On (disables writing)[...]

  • Page 45

    J2 J4 J4 Pin 1 Pin 1 (front view of J4) Pin 2 Pin 1 SCSI ID = 0 Fault LED pin (+) SCSI ID = 1 Vendor Unique SCSI ID = 2 SSREF (+) SCSI ID = 3 Unit Active LED pin (+) Enable termination Ground +5 volts Not connected Reserved SCSI I/O Connector J5 Pin 1 Pin 1 Remote unit active  LED connector GND (cathode) POS (anode) Barracuda 2LP Installation[...]

  • Page 46

    44 Barracuda 2LP Installation Guide, Rev. E WC/DC drives Setting the SCSI ID jumpers The SCSI ID for WC drives is normally set over the SCSI bus by the host system using connector contacts 39 (ID0), 40 (ID2), 79 (ID1), and 80 (ID3). Systems design- ers may, optionally, install a remote operator panel con- nection to set the SCSI ID. Figure 15b illu[...]

  • Page 47

    Barracuda 2LP Installation Guide, Rev. E 45 WC/DC drives Applicable jumper options Option jumpers are available as illustrated below. J2 Pin 1 Enable parity check of SCSI bus (default). Disable parity check. J2 Pin 1 Pin 2 Reserved Parity Check option Write protect = Off (enables writing – default) Write protect = On (disables writing) Write Prot[...]

  • Page 48

    46 Barracuda 2LP Installation Guide, Rev. E Figure 15b. Additional jumper options J2 J4 J4 Pin 1 Pin 1 (front view of J4) Pin 2 Pin 1 SCSI ID = 0 Fault LED pin (–) SCSI ID = 1 Vendor Unique SCSI ID = 2 SSREF (+) SCSI ID = 3 Unit Active LED pin (–) Not used Ground +5 volts Not connected Reserved WC/DC drives[...]

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    Seagate Technology, Inc. 920 Disc Drive, Scotts Valley, CA 95066-4544, USA Publication Number: 83328920, Rev. E, Printed in USA[...]