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BARRACUDA 2, 2HP
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ST12450W/WD
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Installation Guide
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Verwandte Anleitungen für Seagate ST12450W Barracuda 2
Inhaltszusammenfassung für Seagate ST12450W Barracuda 2
- Seite 1 ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ BARRACUDA 2, 2HP ○ ○ ○...
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Seite 2: Inhaltsverzeichnis
Wichtige Sicherheitshinweise ....... 5 Technical support services ........10 General description ..........12 Initial setup information ........... 17 Kühlung des Systems .......... 28 © 1995 Seagate Technology, Inc. All rights reserved Publication Number: 83328890, Rev. B March 1995 Seagate ®... -
Seite 3: Preface
It provides support services, performance speci- fications, and initial setup information. Additional infor- mation is available in the Barracuda 2, 2HP Product Manual (part number 83328900). Contact your Seagate sales representative if you need to order this publication. Electrostatic discharge protection Caution. -
Seite 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. - Seite 5 ST12450W/WD Installation Guide, Rev. B 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 that may damage the unit, possibly making it unsafe for use.
- Seite 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 stan-...
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Seite 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. - Seite 8 ST12450W/WD Installation Guide, Rev. B vorgenommen 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.
- Seite 9 ST12450W/WD Installation Guide, Rev. B 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.
- Seite 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...
- Seite 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.
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Seite 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. - Seite 13 5:00 . PST, Monday through Friday. SeaBOARD: The Seagate Technical Support Bulletin Board System (BBS) is available 24 hours a day, 7 days a week. A modem is required to access this service. The commu- nications software must be set for eight data bits, no parity, and one stop bit (8N1), 9600 baud max.
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Seite 14: General Description
ST12450W/WD Installation Guide, Rev. B General description Barracuda 2, 2HP SCSI disc drives are high-speed, random-access data storage devices. Two-head par- allel technology effectively doubles the internal data transfer rate when compared to non-parallel head technologies. ST12450W/WD drives are illustrated in Figure 1. Speci- fications and DC power requirements for the drives are listed in tables following the figure. - Seite 15 ST12450W/WD Installation Guide, Rev. B SCSI I/O Connector DC Power Connector Figure 1. Barracuda 2, 2HP disc drive...
- Seite 16 ST12450W/WD Installation Guide, Rev. B Characteristics ST12450W/WD Interface Fast & Wide SCSI-2 Cache type Multi-segmented 1,024 Kbytes Capacity Unformatted 2,437 Mbytes Formatted 1,849 Mbytes Recording Cylinders (user accessible) 2,710 Heads (physical) Heads (logical) Modulation RLL 1,7 code SCSI rate Max burst transfer 20 Mbytes/sec Seek time Average read...
- Seite 17 ST12450W/WD Installation Guide, Rev. B DC power requirements Single-ended Differential + + + + + 5V + + + + + 12V + + + + + 5V + + + + + 12V ± ± ± ± ± 5% ± ± ± ± ± 5% ±...
- Seite 18 ST12450W/WD Installation Guide, Rev. B 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.
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Seite 19: Initial Setup Information
ST12450W/WD Installation Guide, Rev. B No terminator power. See Section 11.7.3.4 in the Barra- cuda 2, 2HP Product Manual. Seeking is defined as a third-stroke seek at OD. The command is issued every 20 msec. Read track is defined as repeat reads of track 15 with a 60% duty cycle. - Seite 20 ST12450W/WD Installation Guide, Rev. B Setting the SCSI ID jumpers Each device on the SCSI chain must have a unique SCSI ID. The host system’s SCSI controller usually uses the highest-numbered ID available (ID15 in wide systems); therefore the lower-numbered SCSI IDs are normally used for the other SCSI devices such as this Barracuda disc drive.
- Seite 21 ST12450W/WD Installation Guide, Rev. B SCSI I/O DC Power Connector Pin 1 Pin 1 Connector 3P 2P SCSI ID = 0 (default) SCSI ID = 1 SCSI ID = 2 SCSI ID = 3 SCSI ID = 4 SCSI ID = 5 SCSI ID = 6 SCSI ID = 7 SCSI ID = 8...
- Seite 22 ST12450W/WD Installation Guide, Rev. B Terminating the drive If you are installing a Barracuda 2, 2HP drive in a system that has other SCSI devices installed, terminate only the end devices on the SCSI chain. A SCSI “device” is any disc drive, scanner, tape-backup unit, or other piece of hardware connected to your system using the SCSI bus.
- Seite 23 ST12450W/WD Installation Guide, Rev. B ST12450W (single-ended) drives are terminated with permanently mounted active IC terminators. If you install an ST12450W drive and it is not on the end of the SCSI bus, remove the jumper from pins 11 and 12 of connector J4 (see Figure 4).
- Seite 24 ST12450W/WD Installation Guide, Rev. B Terminator power ST12450W drives may be configured in four different ways (see Figure 5); however, you usually will not need to change this option and should normally leave the drive configured as it was shipped from the factory. ST12450WD drives should be configured with a jumper connecting J01 pins 1 and 3 (and no jumper on J01 pins 2 and 4) as illustrated in Figure 5.
- Seite 25 ST12450W/WD Installation Guide, Rev. B Changing other applicable jumper options Barracuda 2, 2HP drives are designed for use in a variety of systems. Unique installations may require you to change one or more of the other jumpers to meet specific system requirements;...
- Seite 26 ST12450W/WD Installation Guide, Rev. B Pin 1 Reserved (RES) Reserved for future use. Parity Check option (PAR) Enable parity check of SCSI bus data. Disable parity check of SCSI bus data (default). Motor Start option (MTR) Enable motor start. This makes the drive wait for the Start Unit command from the host before starting the spindle motor.
- Seite 27 ST12450W/WD Installation Guide, Rev. B Synchronizing spindles in multiple drive configurations If you are installing two or more Barracuda drives, you may (optionally) want to synchronize their spindles to reduce the latency associated with switching from one drive to another. Spindle sync cables are used to connect the drives.
- Seite 28 ST12450W/WD Installation Guide, Rev. B Figure 8 illustrates a typical synchronized spindle configuration. After connecting each drive with spindle sync cables, you must designate a master spindle sync reference source. This master source is normally a disc drive located on the same SCSI bus as the other drives you want to synchronize with.
- Seite 29 ST12450W/WD Installation Guide, Rev. B Providing adequate cooling The enclosure design must ensure adequate cooling for the drive. The maximum ambient temperature is The drive’s product manual (83328900) 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.
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Seite 30: Kühlung Des Systems
ST12450W/WD Installation Guide, Rev. B Kühlung des Systems Die Gehäusekonstruktion muß eine ausreichende Kühlung des Laufwerkes gewährleisten. Die Umgebungstemperatur darf maximal 50 C betragen. Die Produkthandbuch Barracuda 2, 2HP (Dokument 83328900) enthalten Anweisungen zur Beurteilung der Luftstromkonstruktion. Die Beurteilung muß sicherstellen, daß... - Seite 31 ST12450W/WD Installation Guide, Rev. B Above unit Über der Einheit Note. Air flows in the direction shown (back to front) or in reverse direction (front to back) Under unit Hinweis. Luftstrom in der angezeigten Richtung Unter der Einheit (von vorne nach hinten) oder in umgekehrter Richtung (von hinten nach vorne) Above unit Über der Einheit...
- Seite 32 ST12450W/WD Installation Guide, Rev. B Mounting the drive and connecting cables Do not touch the connector pins or any components on the control board without observing static-discharge precautions. Always handle the drive by the frame only. The drive may be mounted in any orientation (horizon- tally, vertically, and any combination thereof);...
- Seite 33 ST12450W/WD Installation Guide, Rev. B 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 d i e Vorsichtsmaßnahmen zur Verhinderung statischer Aufladung.
- Seite 34 ST12450W/WD Installation Guide, Rev. B 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 (see Figures 2, 4, 5, and 6).
- Seite 35 ST12450W/WD Installation Guide, Rev. B oder gedrückt werden und es darf den Luftstrom zur Kühlung des Systems nicht behindern. 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.
- Seite 36 ST12450W/WD Installation Guide, Rev. B 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.
- Seite 37 ST12450W/WD Installation Guide, Rev. B 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.
- Seite 38 ST12450W/WD Installation Guide, Rev. B Formatting the drive Warning. Formatting a drive erases all user data. Be sure that you understand this principle before formatting any hard disc drive. It is not necessary to format a drive which has previously been used to store data, unless your intention is to erase all user data.
- Seite 40 Seagate Technology, Inc. 920 Disc Drive, Scotts Valley, CA 95066-4544, USA Publication Number: 83328890, Rev. B, Printed in USA...