Seagate BARRACUDA 2LP ST31250N/ND Installation Manual

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BARRACUDA 2LP

Disc Drive

ST31250N/ND

ST31250W/WD/WC/DC

ST32550N/ND

ST32550W/WD/WC/DC

Installation Guide

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Summary of Contents for Seagate BARRACUDA 2LP ST31250N/ND

Page 1 BARRACUDA 2LP Disc Drive ST31250N/ND ST31250W/WD/WC/DC ST32550N/ND ST32550W/WD/WC/DC Installation Guide...
Page 2: Table Of Contents
Wichtige Sicherheitshinweise ... 5 Technical support services ... 10 General description ... 13 Initial setup information ... 19 Kühlung des Systems ... 24 © 1995 Seagate Technology, Inc. All rights reserved Publication Number: 83328920, Rev. E October1995 ® Seagate , Seagate Technology are registered trademarks of Seagate Technology, Inc.
Page 3: Preface
It provides support services, performance specifications, and initial setup information. Additional information is available in the Barracuda 2LP Product Manual (part number 83328930). Contact your Seagate sales representative if you need to order this publica- tion. Electrostatic discharge protection Caution.
Page 4: Important Safety Information And Precautions
• 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 to avoid potentially damaging static discharges.
Page 5 Barracuda 2LP Installation Guide, Rev. E 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.
Page 6 As a component, this drive is designed to be installed and operated in accordance with UL1950, IEC950, EN60950, CSA C22.2 950, and VDE0805. Seagate takes all reasonable steps to ensure that its products are certifiable to currently accepted standards.
Page 7: Wichtige Sicherheitshinweise
This unit is a component part and as such is not meant to comply with FCC or similar national requirements as a stand-alone unit. Engineering radiated emissions test results are available through the Seagate Safety Depart- ment to assist the subsystem designer. Wichtige Sicherheitshinweise Vorsicht.
Page 8 Barracuda 2LP Installation Guide, Rev. E 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 Aufkleber auf dem Gerät enthalten Warn- und Vorsichtshinweise.
Page 9 Barracuda 2LP Installation Guide, Rev. E persönliche Sicherheit noch die Leistung der Einheit gefährdet. Beachten Sie in jedem Fall die folgenden Warn-und Vorsichtshinweise: • Führen Sie alle Wartungsarbeiten entsprechend den Anweisungen in diesem Handbuch aus. • Beachten Sie alle Warn- und Vorsichtshinweise in diesem Handbuch.
Page 10 Garantieanspruchs zur Folge. Als Teilkomponente ist dieses Laufwerk für die Installa- tion und den Betrieb in Übereinstimmung mit UL 1950, IEC950, EN60950, CSA C22.2 950 und VDE0805 vorgesehen. Seagate ist ständig bemüht, die Zulassungsfähigkeit von Seagate-Produkten im Rahmen der gegenwärtig...
Page 11 Versorgungsspannungen des Laufwerks. Dieses Gerät ist eine Baugruppe und unterliegt als solche nicht den Anforderungen der FCC oder ähnlicher nationaler Behörden für eigenständige Geräte. Technische Testergebnisse zu elektromagnetische Strahlung sind für Designer von Untersystemen auf Anfrage von der Seagate-Sicherheitsabteilung erhältlich.
Page 12: Technical Support Services
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™ services. These are toll calls if you dial from outside of the number’s local dialing area.
Page 13 Technical support specialists are available from 8:00 to 5:00 . PST, Monday through Friday. Recorded technical information on selected Seagate products is provided while you are on hold. Recordings are acces- sible 24 hours a day, 7 days a week.
Page 14 Barracuda 2LP Installation Guide, Rev. E Location USA, Mexico, Latin America England Germany Singapore Australia Canada France Korea Modem number (408) 438-8771 44-62-847-8011 49-89-140-9331 65-292-6973 61-2-756-2359 (416) 856-5581 33-1-40-67-1034 82-2-556-7294...
Page 15: General Description
Barracuda 2LP Installation Guide, Rev. E 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 rack within the system or an external enclosure designed to house one or more disc drives or other peripheral units.
Page 16 Barracuda 2LP Installation Guide, Rev. E Characteristics ST31250 Interface Fast SCSI-2 Capacity Unformatted 1,205.3 Mbytes Formatted 1,020.9 Mbytes Recording Cylinders (user) 3,711 Read/write data heads 5 Servo heads Avg bytes/track 64,160 Seek time Average read 8.0 msec Average write 9.0 msec Disc rotation 7,200 Average latency...
Page 17 Barracuda 2LP Installation Guide, Rev. E Can also be operated according to SCSI-1 protocol. 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 Not including on-board controller overhead.
Page 18 Barracuda 2LP Installation Guide, Rev. E DC power requirements Single-ended Voltage regulation Maximum operating current 0.93 Maximum starting current 3, 6 Peak DC 0.93 Peak AC Delayed motor start (max) 0.88 Peak operating current 1, 10 Typ DC 0.91 Max DC 0.93 Max (peak) 1.00...
Page 19 Barracuda 2LP Installation Guide, Rev. E Measured with an average reading DC ammeter. Instanta- neous +12V current peaks will exceed these values. 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 sequence has been completed and that the drive is able to accept selection by the host initiator.
Page 20 Barracuda 2LP Installation Guide, Rev. E No terminator power. See Section 11.7.3.4 in the Barra- cuda 2LP Product Manual. All power-saving features are enabled (ASA II code only). Seeking is defined as a third-stroke seek at OD. The com- mand is issued every 20 msec. Read track is defined as repeat reads of track 15 with a 78% duty cycle on N models, 32% duty cycle on W models, 48% duty cycle on WC models, 60% duty cycle...
Page 21: Initial Setup Information
Barracuda 2LP Installation Guide, Rev. E 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 model.
Page 22 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.
Page 23 Barracuda 2LP Installation Guide, Rev. E 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.
Page 24 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 change this option and can normally leave the drive configured as it was shipped from the factory.
Page 25 Barracuda 2LP Installation Guide, Rev. E Providing adequate cooling The enclosure design must ensure adequate cooling for the drive. The maximum ambient temperature is 50 The drive’s product manual (83328930) describes how to evaluate the air-flow design. The evaluation consists of ensuring that the case temperatures of certain critical components remain within acceptable limits during drive operation.
Page 26: Kühlung Des Systems
Barracuda 2LP Installation Guide, Rev. E Kühlung des Systems Die Gehäusekonstruktion muß eine ausreichende Kühlung des Laufwerkes gewährleisten. Die Umgebungstemperatur darf maximal 50 C betragen. Die Produkthandbuch Barracuda 2LP (Dokument 83328930) enthalten Anweisungen zur Beurteilung der Luftstromkonstruktion. Die Beurteilung muß sicherstellen, daß...
Page 27 Barracuda 2LP Installation Guide, Rev. E 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 in umgekehrter Richtung (von hinten nach vorne) Note.
Page 28 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 Installation des Laufwerkes und Anschluß der Kabel Beachten Sie beim Handhaben und Anfassen der A n s c h l u ß s t i f t e u n d K o m p o n e n t e n Vorsichtsmaßnahmen zur Verhinderung statischer Aufladung.
Page 30 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.
Page 31 Barracuda 2LP Installation Guide, Rev. E 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 Gleichstromkabels an das Laufwerk das Kabelende in den Gleichstromanschluß...
Page 32 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.
Page 33 Barracuda 2LP Installation Guide, Rev. E Systemgehäuse nicht an die HDA/PCB-Erdung anschließen wollen, müssen Sie das Laufwerk auf nichtleitende Weise (galvanisch isoliert) im Host- System einbauen. Die daraus u.U. resultierende verstärkte elektromagnetische Strahlung fällt in den Zuständigkeitsbereich des Systemdesigners. 5. Replace the host system’s cover. 5.
Page 34 If you want to enable the write cache, refer to your system’s drive controller and software utility documenta- tion. Seagate provides an ASPI utility that you can use in a PC compatible system to enable the write cache. It is available on Seagate’s CompuServe forum and on the...
Page 35 Barracuda 2LP Installation Guide, Rev. E 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 the appropriate pins as shown in the illustration. Pin 1 Pin 2 Pin 1 SCSI ID = 0 (default)
Page 36 Barracuda 2LP Installation Guide, Rev. E 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 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 (see Figure 6).
Page 37: Terminator Power
Barracuda 2LP Installation Guide, Rev. E Terminator power There are four possible terminator power configurations for ST31250N and ST32550N drives (see Figure 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 jumper on J1 pins 2 and 4) as illustrated in Figure 7.
Page 38 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. Pin 1 (front view of J4) Pin 1 Pin 2 Pin 1 Spindle sync cable connector Figure 8.
Page 39 Barracuda 2LP Installation Guide, Rev. E Other applicable jumper options Several other jumper options are available as illustrated. Pin 1 (front view of J4) Pin 1 Pin 2 Pin 1 Reserved Remote LED GND (cathode) connector* POS (anode) Note to subsystem designers: In Europe, a red LED indicates an error or warning condition.
Page 40 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. SCSI I/O Connector Pin 1...
Page 41 Barracuda 2LP Installation Guide, Rev. E 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.
Page 42 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.
Page 43 Barracuda 2LP Installation Guide, Rev. E Synchronizing spindles Use pins 11 and 12 on the J5 connector to attach the spindle sync cable. See Figure 13. SCSI I/O Connector Pin 1 Pin 1 Spindle Sync Reference Spindle sync cable connector Spindle Sync Ground Figure 13.
Page 44 Barracuda 2LP Installation Guide, Rev. E W/WD drives Other applicable jumper options Other option jumpers are available as illustrated below. Pin 1 Pin 2 Pin 1 Reserved Parity Check option Enable parity check of SCSI bus (default). Disable parity check. Write Protect option Write protect = Off (enables writing –...
Page 45 Barracuda 2LP Installation Guide, Rev. E SCSI I/O Connector Pin 1 Pin 1 GND (cathode) Remote unit active LED connector POS (anode) Pin 1 (front view of J4) Pin 2 Pin 1 SCSI ID = 0 Fault LED pin (+) SCSI ID = 1 Vendor Unique SCSI ID = 2...
Page 46 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.
Page 47 Barracuda 2LP Installation Guide, Rev. E Applicable jumper options Option jumpers are available as illustrated below. Reserved Parity Check option Enable parity check of SCSI bus (default). Disable parity check. Write Protect option Write protect = Off (enables writing – default) Write protect = On (disables writing) Motor Start option Enable motor start.
Page 48 Barracuda 2LP Installation Guide, Rev. E WC/DC drives 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...
Page 52 Seagate Technology, Inc. 920 Disc Drive, Scotts Valley, CA 95066-4544, USA Publication Number: 83328920, Rev. E, Printed in USA...

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