Seagate ST34502LW-LC, ST39102LW-LC User Manual

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Cheetah 9LP

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Disc Drive

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ST39102LW/LC

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ST34502LW/LC

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Installation Guide

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Contents

Preface ..................................................................................... 1

Electrostatic discharge protection ............................................ 1

Important safety information and precautions................... ....... 2

Wichti g e Si c h er h e its h in w ei se . ... ......... ... .......... ......... ... .......... ... 4

Regulatory agency compliance................................................7

Seagate Technology support services...................................... 9

General description ................................................................ 15

Initial se tup informa tion . .. .......... .. .......... .......... .. .......... .......... . 19

Kühlung des Systems............................................................. 29

Installa ti on des Laufwerkes und Anschluß der Kabel.............31

LW drives section ................................................................... 40

LC drives section.................................................................... 46

Seagate, Seagate Technology, and the Seagate logo are registered trad em arks of Seagate Technology, Inc. Cheetah, SeaFAX, SeaFONE, SeaBOARD, and SeaTDD are either trademarks or registered trademarks of Seagate Technology, Inc. or one of its subsidiaries. All other trademarks or registered trademarks are the property of their respective owners.

No part of this publication may be reproduced in any form with-

out written permission from Seagate Technology, Inc.

Cheetah 9LP Installation Guid e, Rev. B 1

Preface

This manual contains information for users of the Seagate®

Cheetah 9LP SCSI dis c dri ves. It provides support services, per-

formance specifications, and initial setup information. Additional

information is available in the

number 83 329240). Contac t your Se agate sales representati ve if

you need to order this publication.

Electrostatic discharge protection

Caution.

All drive electronic assemblies are sensitive to static electricity,

due to the electrostatically sensitive devices used within the

drive cir cuitry. Although some devices such as metal- oxide semi-

conductors are extremely sensitive, all semiconductors, as well

as some resistor s and capacitors, may be dama ged or degraded

by exposure to static electricity.

Electrost ati c damage to electronic devices may be caused by t he

direct discharge of a charged conductor or by exposure to the

static fields surrounding charged objects. To avoid damaging

drive electronic assemblies, observe the following precautions

when installing or servicing the drive:

• Ground yourself to the drive whenever the drive electronics 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.

Removal of circuit boards by personnel not performing depot repair will damage components and may void the warranty.

Cheetah 9LP Product Manual

(part

2 Cheetah 9LP Installation Guide, Rev. B

• Turn off the power before removing or installing the DC power cable.

• Do not remov e any circuit boards from the drive .

• Never use an ohmmeter on any circuit boards.

• When installing the dri ve on a carrier or t ray, discharge the carrier or tray pr io r to ins e rting it int o th e system.

Important safety information and precautions

Caution.

Use proper safety techniques for safe, reliable operation of this unit.

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 that may damage the unit, poss ibly making it unsafe for use.

Always observe the following warnings and precautions:

• Follow all cautions and warnings in the procedures.

• Use sound safety practices when operating, installing, or removing the uni t.

• Use caution when troubleshooting a unit that has voltages present. Tur n off power to the unit before removing it.

• 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

Use forced-air ventilation when bench-testing the drive to ensure proper cooling of drive components.

Cheetah 9LP Installation Guid e, Rev. B 3

stacked vertically, pay special attention to the top where temperatures are usually highest.

• Follow the precautions listed above in “Electrostatic discharge protection.”

• Do not remove any circuit boards from the drive. Return the entire drive for depot repair if any circuit board is defective. Removal of circuit boards by personnel not performing depot repair will damage components and may void the war ranty.

• Do not separate the head and disc assembly (HDA) from the PCB. Return the entire drive for depot repair if the HDA is defective.

• Do not attempt to disassemble the HDA. It is not field repairable. If the sealed HDA is opened by personnel not performing depot repair, this will damage components and void the warranty.

As a component, this drive is designed to be installed and operated in accordance with UL1950, EN60950, CAN/CSA C22.2 950-M95, and VDE0805.

Seagate takes all reasonable steps to ensure that its products are certifiable to currently accepted standards. Typical applications of these disc drives include customer packaging and subsystem design. Safety agencies conditionally certify component assemblies, such as the Cheetah disc drive, based on their final acceptability in the end-use product. The subsystem designers are responsible for meeting these conditions of acceptability in obtaining safety-regulatory agency compliance in their end-use products and for certifying where required by law. A necessary part of meeting safety requirements is the provision for overcurrent protection on drive SELV supply vol tages.

4 Cheetah 9LP Installation Guide, Rev. B This unit is a component part and as such is not meant to com-

ply with FCC or similar national requirements as a stand-alone unit. Engineering radiated emissions test results are available through the Seagate Safety Department to assist the subsystem designer.

Wichtige Sicherheitshinweise

Vorsicht.

Fremdbelüftung vorzusehen, um eine ausreichende Kühlung der Laufwerkkomponenten sicher zustellen.

Verwenden Sie geeignete Sicherheits- um den sicheren, zuverlässigen Betrieb dieser Einheit zu gewährleisten.

Die Verfahren in diesem Handbuch und die Aufkleber auf dem Gerät enthalten Warn- und Vorsichtshinweise. Diese Hinweise sind sorgfältig durchzulesen und zu beachten, um das Risiko von Verletzungen auf ein Mindestmaß zu beschränken oder ganz zu vermeiden. Die Warnhinweise machen auf Situationen oder Praktiken aufmerksam, die Sie oder andere gefährden könnten. Die Vorsichtshinweise machen auf Situationen oder Praktiken aufmerksam, die Einheit beschädigen können, so daß deren Gebrauch mit Risiko behaftet ist.

Die Warn- und Vorsichtshinweise sind nicht allumfassend! Es ist uns einfach nicht möglich, alle Wartungsmethoden oder die ev entuellen Risiken jeder Methode zu kennen, zu beurteilen und Sie entsprechend zu beraten. Aus diesem Grund haben wir auf eine derartige umfassende Beurteilung verzichtet. Falls Sie ein hier nicht beschriebenes Verfahren oder Werkzeug verwenden, stellen Sie zuerst sicher, daß das gewähl te Verf ahren weder Ihre persönliche Sicherheit noch die Leistung der Einheit gefährdet.

Beim Testen des Laufwerks auf dem Prüftisch ist

Cheetah 9LP Installation Guid e, Rev. B 5 Beachten Sie in jedem Fall die folgenden Warn-und Vorsicht-

shinweise:

• Beachten Sie alle Warn- und Vorsichtshinweise in diesem Handbuch.

• Treffen Sie beim Betrieb, bei der Installation oder bei der Entfernung der Einheit angemessene Sicherheitsvorkehrungen.

• Wenn eine Einheit unter Spannung steht, gehen Sie bei der Fehlerdiagnose besonders vorsichtig vor. Schalten Sie die Einheit au s, bevor Sie mit den Instal lations-und Ent fernungsarbeiten beginne n.

• Wenn das Laufwerk in einem Einbaugestell oder Gehäuse montiert ist, sorgen Sie dafür, daß die Temperatur im Inneren des Gestells oder Gehäuses die für das Laufwerk vorgegebenen Grenzwerte nicht übersteigt. Wenn Einheiten vertikal übereinander betestigt werden, achten Sie besonders auf den oberen Stapelbereich, da dort die Temperatur gewöhnlich am höchsten ist.

• Befolgen Sie die oben unter “Electrostatic Discharge Protection” angegebenen Sicherheitsmaßnahmen.

• Nehmen Sie keine Platinen aus dem Laufwerk. Wenn eine Platine defekt ist, muß das gesamte Laufwerk zur Reparatur eingeschickt werden. Die Herausnahme von Platinen durch andere Personen als die für die werkseitige Reparatur zuständigen kann zu einer Beschädigung der Komponenten und Erlöschen des Garantieanspruchs führe n.

6 Cheetah 9LP Installation Guide, Rev. B

• Die vormontierte Kopf- und Festplatteneinheit (HDA) nicht aus dem Laufwerkgehäuse nehmen! Falls die HDA beschädigt ist, schicken Sie das gesamte Laufwerk zur Reparatur ein.

• Die HDA ist nicht vor Ort reparierbar und darf nicht auseinandergenommen werden! Öffnen der versiegelten HDA durch andere Personen als die für die werkseitige Reparatur zuständigen hat eine Beschädigung der Komponenten und Erlöschen des Garantieanspruchs zur Folge.

Als Teil komponen te ist dies es Laufwer k für die I nstallati on und den Betrieb in Ü bereinstimmung mit UL 1950 , EN60950, CAN\CSA C22.2 950-M95 und VDE0805 vorg esehen.

Seagate ist ständig bemüht, die Zulassungsfähigkeit von Seagate-P rodukten im Rahmen der gegenw är tig geltend en Standa rds z u gewäh r leist en. Zu den ty pisch en An wend unge n dieser Festplattenwerke zählen Systemeinbau durch den Kunden und die Konstruktion von Untersystemen. Sicherheitsbehörden gewähren eine bedingte Zulassung für Komponenten wie das Cheetah-Festplattenlauf werk vorbehaltlich d er endgültigen Zulasssung im Endprodukt. Designer von Untersystemen sind dafür verantwortlich, die Voraussetzungen für die Einhaltung sicherheits- oder auf sichtsbehör dli cher Vorschriften in ihre n Endprodukten und - falls gesetzlich vorgeschrieben - für die Zulassung zu schaffen. Eine Grundvoraussetzung zur Einhaltung der Sicherheitsanforderungen ist die Bereitstellung eines Überlastschutzes für die SELV-Versorgungsspannungen des Laufwerks.

Dieses Gerät ist eine Baugruppe und unterliegt als solche nicht den Anforderungen der FCC oder äh nli cher nationaler Behörden für eigenständige Geräte . Technische Testergebnisse zu elektro-

Cheetah 9LP Installation Guid e, Rev. B 7 magnetische Strahlung sind für Des igner von Untersystemen au f

Anfrage von der Seagate-Sicherheitsabteilung erhältlich.

Regulatory agency compliance

Electromagnetic susceptibi lity

As a component assembly, the drive is not required to meet any susceptibility performance re quirements. It is the responsibility of those integrating the drive within their systems to perform those tests required and design their system to ensure that equipment operating in the same system as the drive or external to the system does not adversely affect the performance of the drive. See DC power requirements on page 18.

Electromagnetic compliance

Seagate uses an independent laboratory to confirm compliance to the directives/standard(s) for CE Marking and C-Tick Marking. The drive was tested in a representative system for typical applications. The selected system represents the most popular characteristics for test platforms. The system configurations include:

• 486, Pentium, and P owerPC microprocessors

• 3.5-inch floppy disc driv e

• Ke yboard

• Monitor/di splay

• Printer

• External modem

• Mouse

Although the test system with this Seagate model complies to the directives/standard(s), we cannot guarantee that all systems will comply. The computer manufacturer or system integrator

8 Cheetah 9LP Installation Guide, Rev. B shall confirm EMC compliance and provide CE Marking and C-

Tick Marking for their product.

Electromagnetic compliance for the European Union

If this model has the CE Marking it complies with the European Union requirements of the Electromagnetic Compatibility Directive 89/336/EEC of 03 M ay 1989 as amended by Dir ective 92 /31/ EEC of 28 April 1992 and Directive 93/68/EEC of 22 July 1993.

Australian C-Tick

If this model has the C-Tick Marking it complies with the Australia/New Zealand Standard AS/NZS3548 1995 and meets the Electromagnetic Compatibility (EMC) Framework requirements of Australia’s Spectrum Management Agency (SMA).

Cheetah 9LP Installation Guid e, Rev. B 9

Seagate Technology support services

Presales support

To determine which Seagate products are best suited for your specific application, contact us about configuration and compatibility and for current product availability. You can leave a voice message after business hours or send an e-mail message—we reply during b u siness hours.

Disc Drives 405-936-1210 Fax: 405-936-1683

A.M

(8:00 e-mail: DiscPresales@Seagate.com

to 12:15 P.M., 1:30 P.M. to 6:00

Tape Products 1-800-626-6637 or 714-641-2500

A.M

Fax: 714-641-2410

e-mail: Tape_Sales_Support@Seagate.com

Note.

You can purchase select tape products and tape accessories through Seagate Express 24 hours daily by calling 1-800-531-0968 or by faxing your order to 972-481-4812.

(6:00

to 5:00

Technical support services

If you need assistance installing your drive, consult your dealer. Dealers are familiar with their unique system configurations and can help you with system conflicts and other technical issues. If you ne ed additional assistance with you r Seagate Seagate products, use one of the Seaga te technical support services list ed below.

SeaFONE® 1-800-SEAGATE

Seagate’s 800 number (1-800-732-4283) allows toll-free access to automated self-help services, providing answers to commonly

P.M

, central time, M-F)

P.M

pacific time, M-F)

drive or other

10 Cheetah 9LP Installation Guide, Rev. B asked questions, troubleshooting tips, and specifications for disc

drives and tape drives. This service is available 24 hours daily and requires a touch-tone phone. International callers can reach this automated self-help service by dial ing 405-936-1234.

Online services

Using a modem, you can obtain troubleshooting tips, free utility programs, drive specifications and jumper settings for Seagate’s entire product line. You can also download software for installing and analyzing your drive.

SeaNET

You can obtain technical information about Seagate products over the Inte rne t fro m Se ag ate’s World Wi de We b hom e pa ge

(http://www.seagate.com) ftp.seagate.com)

DiscSupport @ Seagate.com

Seagate.com

. You can also send E-mai l wi th your quest ions

or Seagate’s ftp server

TapeSupport @

SeaBOARD®

SeaBOARD is a computer bulletin board system that contains information about Seagate disc and tape drive products and is available 24 hours daily. Set your communications software to eight data bits, no parity, and one stop bit (8-N-1).

Location Phone number

Australia 61-2-9756-2359 France 33 1-48 25 35 95 Germany 49-89-140-9331 Taiwan 886-2-2719-6075 Thailand 662-531-8111

(ftp://

Cheetah 9LP Installation Guid e, Rev. B 11

Location Phone number

UK 44-1628-478011 USA Disc: 405-936-1600; Tape: 405-936-1630

FAX services

SeaFAX®

You can use a touch-tone telephone to access Seagate’s automated FAX system to receive technical support information by return FAX. This service is available 24 hours daily.

Location Phone number

Australia 61-2-9756-5170 Germany 49-89-1430-5102 UK 44-1628-894084 USA Disc: 405-936-1620; Tape: 405-936-1640

Technical support FAX

You can FAX questions or comments to technical support specialists 24 hours daily. Responses are sent during business hours.

Location Phone number

Australia 61-2-9725-4052 France 33 1-46 04 42 50 Germany 49-89-1430-5100 Hong Kong 852-2368 7173 Japan 81-3-5462-2979 Korea 82-2-556-4251/7395 Singapore 65-488-7528 Taiwan 886-2-2715-2923

12 Cheetah 9LP Installation Guide, Rev. B

Location Phone number

UK 44-1628-890660 USA Disc: 405-936-1685; Tape: 405-936-1683

Direct-support services

Technical support

For one-on-one help , you can talk to a technical support specialist during local business hours. Before calling, note your system configura tion and drive model number (ST

Location Phone number

Aust ralia 61-2-9725-3366 (9 :00

time, M–F)

France 33 1-41 86 10 86 (9:30

2:00

P.M

to 5:00

P.M

Germany Disc: 49-89-140- 9332; Tape: 49-89-140-9333

(9:30

A.M

to 12:30

P.M

M–F) Hong Kong 852-2368 9918 Kor ea 82-2-531-5800 (9:00

P.M

to 6:00

Singapore 65-488-7584 (9:00

to 5:00

P.M

, M–F)

A.M

Taiwan 886-2-2514-2237 UK 44-1628-894083 (10: 00

2:00

P.M

to 5:00

P.M

USA Please dial 1-800- SEAGATE or 405-936-1234 f or

the specific product telephone number.

(8:00

A.M

to 12:15

P.M

centra l time, M–F)

A.M

, M–F)

, 2:00

A.M

to 12:00

A.M

, M–F)

, 1:30

xxxx

to 5:00

to 12:30

P.M

to 1:00

P.M

to 4:00

P.M

to 6:00

, eastern

P.M

, 1:00

, 2:00

P.M

Cheetah 9LP Installation Guid e, Rev. B 13

SeaTDD™ 405-936-1687

Using a telecommunications device for the deaf (TDD), you can send questions or comments 24 hours daily and exchange mes-

A.M

sages with a technical support specialist between 8:00 12:15

P.M

. and 1:30 P.M. to 6:00

P.M

(central time) Monday

through Friday.

Customer service centers

Seagate direct OEM, Distribution, and Systems Integrator customers should contact their Seagate service representative for warranty information. Other customers shoul d contact t heir place of purchase. Seagate offers comprehensive customer support for all Seagate drives. These services are available worldwide.

Location Phone number FAX number

Asia Pacific and Au stralia 65-485-3595 65-488-7503 Europe, Middle East,

and Africa 31-2031-67300 31-20 65-34320 Japan 81-3-5462-2904 81-3-546 2-2979 USA 1-800-468-3472 405-949-6740

Other Americas (Braz il ,

Canada, Mexico) 405-949-6706 405-949-6738

Manufacturer’s representatives

Brazil

MA Informatica 55-21-516-6649 55-21-516-5280 Canada

Memofix

Adtech

905-660-4936 905-812-8099 1-800-624-9857

905-660-8738 905-812-7807

14 Cheetah 9LP Installation Guide, Rev. B

Location Phone number FAX number

Mexico

Abicom Seamax

SA DE CV 525-546-4888 525-546-4888

Southern Europe

Caesar Italia 39-688-18149 3 9-688-02103

Cheetah 9LP Installation Guid e, Rev. B 15

General description

Cheetah 9LP SCSI disc drives are high-speed, random-access digital-data storage devices capabl e of operating in single-ended (SE) or low voltage differential (LVD) modes.

These two modes are offered to allow you to use this drive in systems that use the traditional SE technology or to use it in LVD-capable systems. Refer to page 20 for additional information about LVD technology.

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 enclosur e desi gned to house one or more di sc driv es or other peripheral units. In either case, the disc drive must receive adequate cooling (refer to “Providing adequate cooling”) and it must be sufficiently grounded and shielded from emissions. The

83329240) contains guidelines for a properly designed enclosure.

Attention.

Cheetah 9LP Product Manual

This high per formance Cheetah disc drive must have proper power and cooling for reliable operation.

(part number

16 Cheetah 9LP Installation Guide, Rev. B

Figure 1. Cheetah 9LP family drive (L W model sho wn)

Cheetah 9LP Installation Guid e, Rev. B 17

Characteristics ST39102LW/LC ST34502LW/LC

Interface Ultra2 SCSI

Ultra2 SCSI

Capacity

Unformatted (Gbytes) Formatted (Gbytes)

11.27

9.17

5.63

4.55

Recording

Cylinders (us er) Read/write data heads Avg bytes/track

Access time

Av erage read (msec) Average write (msec)

6,962 12 104,84 0- 159,008

5.4

6.2

6,962 6 104,840-159,008

5.4

6.2

Disc rotation

RPM Average latency (msec)

10,025

2.99

10,025

2.99

Synchronous data tra nsfer rate

Maxi mu m instant an eo us (Mbytes/sec)

40 (SE mode) 80 (LVD mode)

Asynchronous data transfer rate Maximum instantaneous

10.0 10.0

(2 byt es wide) (Mbyt es/sec)

Multi-segmented cache (kbytes)

1. Also operates per SCSI-1/SCSI-2/SCSI-3 protocols.

2. The specified formatted capacities are calculated with the standard

OEM sector size (512 bytes per logical block) and sparing.

3. Includes on-board controller overhead.

1,024 sta ndard 4,096 op tional

1,024 standard 4,096 optional

18 Cheetah 9LP Installation Guide, Rev. B

Low voltage differential (LVD) mode

DC power requirements (±5%)

Single-ended (SE) mode

+5 V+12 V +5 V+12 V

ST39102LW/LC

Maximum start current Maxi mu m op er at ing curren t Average idle current

0.94A

1.02A

0.78A

1.7A

0.84A

0.60A

0.96A

1.09A

0.80A

ST34502LW/LC

Maximum start current Maxi mu m op er at ing curren t Average idle current

1. For more detailed power inf ormatio n, refer to the Cheetah 9LP Produc t

Manual, publication number 83329240.

0.84

0.85

0.71

1.7

0.60

0.39

0.86

0.93

0.73

1.7A

0.84A

0.60A

1.7

0.60

0.39

Cheetah 9LP Installation Guid e, Rev. B 19

Initial setup information

The general information beginning on this page applies to all of the Cheetah 9LP drive models. After reading the general information topics, refer to the appropriate drive-specific section listed below for additional information about configuring and install ing your particular model.

Drive models Page

ST39102LW and ST34502LW 40 ST39102LC and ST34502LC 46

General information

The following general information topics are discussed:

• Single-ended and low voltage differential modes

• SCSI ID jumpers

• Drive termination

• Terminator power

• Interface drivers and data path width notes

• Other applicable jumper options

• Providing adequate cooling

• Mounting the drive and connecting cables

• Formatting t he drive

This mounting procedure does not apply to “LC” model drives. To mount an “LC” drive, plug the drive into the system’s single connector attachment (SCA) position on the system’s back panel.

20 Cheetah 9LP Installation Guide, Rev. B

Single-ended and low voltage differential modes

This drive incorporates two different transceivers to allow you to use it in traditional systems which may use single-ended (SE) drivers and receivers, or to use it in low voltage differential (LVD) capable systems which use LVD drivers and receiv ers.

You can configure the drive to switch between SE and LVD modes automatically or force it to operate in SE mode only. To configure th is option, use the jumper i llus trat ions on page 43 (LW models) or page 48 (LC models).

LVD technology enhances parallel SCSI I/O performance, reduces power consumption, increases allowable cable lengths, and improves device connectivity beyond SE capabilities.

Note.

To operate at the Ultra2 SCSI rates in LVD mode, all devices on the same bus must be runni ng in LVD mode. If you add any single-ended device to a bus that is operating in LVD mode, all devices drop back to operating in single-ended mode. This eliminates the possibility of reaching Ultra2 SCSI transfer rates.

Warning.

Do not mix LVD drives on the same daisy chain with devices having high voltage differential (HVD) interface circ u its .

SCSI ID jumpers

Each device on the SCSI chain must have a unique SCSI ID. The host system’s SCSI controller usually uses the ID that has the highest priority interrupt in the SCSI I/O system. This is always ID7. ID0 has the lowest priority in an 8-bit I/O system. ID8 has the lowest priority in a 16-bit I/O system. The lower priority

Cheetah 9LP Installation Guid e, Rev. B 21 SCSI IDs are normally used for other SCSI devices such as this

Cheetah disc drive. Note. Most SCSI controllers (host adapters) allow you to skip a

SCSI ID. For example, you can have ID0, ID1, and ID3 (skipping ID2). Other controllers do not allow this so be sure to refer to your system or controller user’s man ual for details about its requirements for proper SCSI device installation.

Note. This drive is SCAM (SCSI Configured Auto Magically)

compliant. If the system into which you are installing this drive requires SCAM compliant drives, you do not need to be concerned about the drive ID jumper settings, as the system automatically assigns your new drive the ID it wants it to have. The system may or may not use the existing drive ID jumper settings. Setting the drive ID doesn’t hurt anything, but is not necessary in a SCAM compliant system.

Most Cheetah disc drives are factory set with the SCSI ID set at

0. To change the SCSI ID, refer to the appropriate drive section for your model.

If, after completing the installation process, the drive’s LED does not show on/off activity when the host is trying to communicate with the drive, a duplicate SCSI ID may be the problem. If this is the case, change the ID so that each device on the SCSI chain has its own unique ID. Also check your system or controller user’s manual to ensure that you have not violated its SCSI ID numbering recomm endations.

22 Cheetah 9LP Installation Guide, Rev. B

Drive termination

If you are installing a Cheetah 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.

Note.

Use active (ANSI SCSI-2 Alternative 2) single-ended terminators when terminating a bus operating in singleended mode. Use SPI-2-compliant active low voltage differential terminators when terminating a SCSI Ultra2 bus operating in LVD mode.

The top example in Figure 2 shows an internal hard disc at one end of the SCSI bus with the SCSI controller at the other end (both are terminated). The bottom example shows two additional SCSI devices connected externally—this means the SCSI controller is no longer on the end of the SCSI chain and should not be terminated.

Note.

Some controllers prefer to remain terminated even if they are in the middle of the chain . Also, some control lers treat the internal and external chains as separate logical buses. This means you may need to terminate both the first and last devices on both logical buses to achieve proper termination. If necessary, refer to your system or controller documentation to see how this is handled in your particula r system.

These drives do not have on-b oard terminators, so y ou m ust terminate external to the drive when termination is required. For ST39102LC and ST34502LC drives, this is normally accom-

Cheetah 9LP Installation Guid e, Rev. B 23 plished by terminating the bus at the backpanel. For ST39102LW

and ST34502LW drives, use an in-line terminator on the cable.

Internal SCSI cable

Internal

SCSI device

Internal

SCSI device

Internal SCSI cable

Internal

SCSI device

Internal

SCSI device

Terminate

Controller

Terminate

Controller

External

SCSI cable

External

SCSI device

External

SCSI device

Figure 2. SCSI bus termination

Terminat or power

You usually will not need to change this option and can normally leave the drive configured as it was shipp ed from the factory. For information about how to change the terminator power option on your driv e, ref er to the appropriate drive-specific sec tion.

I/O circuits and dat a path widths

• These drives can be used in singl e- ended or low v olt age diff er -

ential interface systems; however, do not attempt to mix these

drives on the same daisy chain with high voltage differential

devices. The circuits are not compatible and drive damage

may occur.

• These drives have a “wide” (16-bit) SCSI data bus rather than

the standard (non -wide) 8-bit SCSI data b us; howe ver, you can

24 Cheetah 9LP Installation Guide, Rev. B

use these wide drives on a standard (non-wide) 8-bit data bus

if you provide proper termination to the upper 8-bit data lines.

This is often referred to as providing “high-9 termination.” Figures 3, 4, and 5 show typical drive connections. The following table lists the maximum cable lengths and number

of devices using single-ended and LVD I/O circuits allowed on a daisy-chain cable for 10, 20, and 40 Mtransfers/sec I/O data transfer rate s.

Table 1. Cable characteristics for SE and LVD circuits

SCSI driver type

I/O transfer rate (Mtran sfers/s)

Maximum number of devices on bus

Maxi mum ca b le length allowed

SE 10 16 6 meters (19.7 ft.) SE 20 4 3 meters (9.8 ft. ) SE 20 8 1.5 meters (4.9 ft.) LVD 40 16 12 meters (39.4 ft .)

A maximum of 16 devices can be connected on a 16-bit wide data bus.

Cheetah 9LP Installation Guid e, Rev. B 25

Figure 3. 68-pin I/O connection to drive (LW model)

Figure 4. 80-pin I/O connection to drive (LC model)

26 Cheetah 9LP Installation Guide, Rev. B

“LW” Model

Drive

Note:

Do not mix “LW” and “WD” model drives on the daisy chain.

SCSI ID 1

[2]

SCSI ID 0

Terminator

2 through X SCSI devices [1]

Pin 1

(check your

adapter for Pin 1 location)

SCSI ID 7

Terminated

Host Adapter

PCB

[1] “X” means up to 15 or the maximum allowable number of devices on

the SCSI bus. See system documentation and Table 1.

[2] External terminator. Used only on end “LW” drive. Use only SPI-2-

compliant active LVD termin ators on SCSI Ultra2 buses.

Figure 5. Multiple-drive connection to host adapter

Cheetah 9LP Installation Guid e, Rev. B 27

80-pin

SCSI I/O

Connector

Pin 1

Note. This drive model plugs directly into a backplane connec-

tor and therefore uses no cables.

Figure 6. Drive model “LC” with single 80-pin I/O and

power connector

28 Cheetah 9LP Installation Guide, Rev. B

Providing adequate cooling

The enclosure design must ensure adequate cooling for the drive. The maximum ambient temperature allowed is 50°C.

The drive’s product manual (83329240) describes how to evaluate the air-flow design. The evaluation consists of ensuring that the case temperature of certain critical components remains within acceptable limits duri ng drive operation.

We recommend orienting the drive or directing the air flow in a way that creates the least amount of air-flow resistance while providing air flow above the circuit boards and around the head and disc assembly (HDA). Also, choose the shortest possible path between the air inlet and exit. This minimizes the distance traveled by air that is heated by the drive and by other nearby heat source s.

Figure 7 shows two design approaches with one or more fans used to generate ai r flow. The air-flow patterns can be created by the fans either pushing or drawing air. The overall flow pattern can be directed from front to back, back to front, or side to side.

Cheetah 9LP Installation Guid e, Rev. B 29

Kühl ung des Sy stems

Die Gehäusekonstruktion muß eine ausrei chende Kühlung des Laufwerkes gewährleist en. Die Umgebungstemperatur darf maximal 50°C betragen.

Die Prod uktha ndbuch C heetah 9LP (D okumen t 8332 9240) enthalten Anweisungen zur Beur tei lung der Luftstr omkonstruktion. Die Beurteilung muß sicherstellen, daß sich die Gehäusetemperat ur bestimmter kritisch er Komponenten b ei Laufwerkbetrieb innerhalb zugelassener Grenzen häl t.

Wir em pfehlen , das Lauf wer k so zu ori entie re n ode r d en Lu ftstrom so zu lenken, d aß der geri ngste Luftstrom widerstand erzeugt wird und gleichzeitig ein Luftstrom über den Platinen und um die Kopf- und Festplatteneinheit (HDA) gegeben ist. Wählen Sie einen möglichst kurzen Weg zwischen Lufteinlaß und -auslaß. Dadurch wird die Strecke, die die vom Laufwerk und anderen nahegelegenen Hitzequellen aufgewärmte Luft zurücklegt, auf ein Minimu m bes chränkt.

Abbildung 7 zeig t zwe i Konstr uktio nsm öglic hkeiten , bei de ne n ein oder mehrere Lüfter den Luftstrom erzeugen. Der Luftstromverlauf wird durch die Lüfter gesteuert, die entweder Luft einblasen oder abz iehen . Genere ll kann d er Lu ftstrom entwede r von vorne nach hinten oder von hinten nach vorne verlauf en.

30 Cheetah 9LP Installation Guide, Rev. B

Above unit

Note. Air flows in the direction shown (back to front) or in reverse direction (front to back)

Above unit

Note. Air flows in the direction shown or in reverse direction (side to side)

Under unit

Figure 7. Suggested air flow Abbildung 7. Empfohlener Luftstromverlauf

Under unit

Cheetah 9LP Installation Guid e, Rev. B 31

Mounting the drive and connecting cables

Do not touch the connector pins or any components on the control board without observing static-discharge precautions. Alwa ys handle the drive by the frame only.

The drive may be mounted in any orientation (horizontally, vertically, and any combination thereof); however, you must ensure that the drive receives adequate air flow for cooling.

1. Mount the drive to the host system’s chassis using four 6-32

UNC screws. Two mounting holes are in each side of the drive and there are four mounting holes in the bottom of the drive.

The maximum length that the screws should extend into the chassis mounting holes is 0.15 inch (3.81 mm), measured from the outer surface of the chassis. Tighten the screws down e venly. Do not over-tighten or force the scr ew if it does not seem t o screw in easily, because this means the thre ads are not properly aligned. In this case, back the screw out and try again.

Installation des Laufwerkes und Anschluß der Kabel

Beachten Sie bei m Hand haben 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 schräg) installiert werden; jedoch muß dafür gesorgt werden, daß ein ausreichender Luftstrom zur Kühlung des Laufwerkes vorhanden ist.

32 Cheetah 9LP Installation Guide, Rev. B

1. Befestigen Sie das Laufwerk mit vier 6-32-UNC-Schrauben

am Gehäuse des Host- Systems. Die beiden Seiten des Laufwerkes sind mit jeweils zwei Befestigungslöchern versehen, die Unterseite des Laufwerkes weist vier weitere Befestigungslöche r auf.

Gemessen von der Außenfläche des G ehäuses dürfen die Schrauben maximal 3,81 mm in die Befestigungslöcher des Gehüus es hinei nragen. D ie Schra uben mü ssen gl eichmäßig, jedoch nicht zu fest, angezogen werden. Wenn sich eine Schraube nicht ohne Widerstand einschrauben läßt, sind die Gewinde nicht korrekt aneinander ausgerichtet. In diese m Fall die Sc hraube nic ht in das Gewi ndeloch forcieren, sondern die Schraube herausnehmen und erneut in das Gewindeloch einführen.

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 corr ectly install ed jumpers.

3. Stellen Sie sicher, daß die Kennungsbrück en installiert sind.

4. Connect the SCSI cable into the drive’s SCSI connector.

Take care not to st retch or crimp this cable, and do not bloc k the system’s cooling air flow with the cable.

The drive receives DC power through a 4-pin connector mounted next to the SCSI connector. The output of a power supply must meet SELV (safety extra low voltage) as

Cheetah 9LP Installation Guid e, Rev. B 33

defined in IEC 950. Figure 8 provides the pin information for the DC power connector. To connect the DC power cable to the drive, simply insert the cable end into the drive’s DC power connector.

4. Schließen Sie das SCSI- Kabel an den SCSI-Steckverbinder

des Laufwer kes an. Da s Kabel dar f nicht ge dehnt oder gedrückt werden und es darf den Luftstr om zur Kühlung des Systems nicht behindern.

Das Laufwerk wird über einen 4-poligen, neben dem SCSIAnschluß befestig ten Steckver binder mit G le ichst rom versorgt. Der Ausgang eines Netzteils muß SELV (safety extra low voltage) nach IEC 950 entsprechen . Abbildu ng 8 zeigt die Steckerbelegung für den Gleichstromanschluß. Zum Anschlu ß des G leichs tromk abels an das L aufwer k das Kabelende in den Gleichstromanschluß des Laufwerkes stecken.

1 2 3 4

Power

+12V +12V return + 5V return + 5V

Gleichstrom

+12 V

+12 V Rückleitung

+ 5 V Rückleitung

+ 5 V

4321

Figure 8. DC power connector Abbildung 8. Gleichstromanschluß

34 Cheetah 9LP Installation Guide, Rev. B Note. Signal ground on the power control board (PCB) and the

head and disc assembly (HDA) are connected together i n this drive and you cannot separate them. The equipment in which you ha v e mounted t he driv e is connect ed direc tly to the HDA and PCB without electrically isolating shock mounts. M aximizing the conductiv e contact area between HDA ground and system ground may reduce radiated emissions.

If you do not want the system chassis to be connected to the HDA/PCB ground, you must provide a nonconductive (electricall y isolating) metho d of mounting the drive in the host system. This may increase radiated emissions and is the system designer’s responsibility.

Hinweis.

Die Signalerde au f der Str omregelung skar te (PCB) und der Kopf- un d Festpl atte nein heit (HDA) sind i n diese m Laufwerk miteinander verbunden und können nicht getrennt werden. Das Gerät, in das Sie das Laufwerk eingebaut haben, ist ohne elektrisch isolierende Stoßdämpfer direkt an di e HDA und PCB angeschlossen. Die elektromagnetische Strahlung kann reduziert werden, indem Sie eine möglichst große leitende Kontakfläche zwischen der HDA-Erdung und der Systemerdung vorsehen.

Wenn Sie das Systemgehäuse nicht an die HDA/PCBErdung anschließen wollen, müssen Sie das Laufwerk auf nichtleitende Weise (galvanisch isoliert) im Host-System einba uen. Die da raus u.U. resultie ren de verst ärkt e

Cheetah 9LP Installation Guid e, Rev. B 35

elektromagnetische Strahlung fällt in den Zuständigkeitsbereich des Syste md esigners.

5. Replace the host system’s cover.

5. Setzen Sie das Gehäuseoberteil des Host-Systems wieder

auf.

36 Cheetah 9LP Installation Guide, Rev. B

-Z-T//

-Z-

-X-

[1]

-X-

-Z-

Notes:

Mounting holes are 6-32 UNC 2B, three

[1]

on each side and four on the bottom. Max screw penetration into side of drive is 0.15 in. (3.81 mm). Max screw tightening torque is 6.0 in-lb (3.32 nm) with minimum full thread engagement of

0.12 in. (3.05 mm).

1.028

5.787

4.000

3.750 E F

1.750 G

1.625 H

1.122 J

4.000 K L

1.638

1.625 R S T U

Dimension Table

Inches

max max

± .010 ± .010

.125

± .010 ± .010 ± .020 ± .020 ± .010

.250

± .010 ± .010

.181

± .020 ± .020

.265

± .010

.315

± .040

.015

max

.015

max

Millimeters

26.10

max

147.00

max

101.60

± .25

92.25

± .25

3.18

± .25

44.45

± .25

41.28

± .50

28.50

± .50

101.60

± .25

6.35

± .25

41.61

± .25

4.60

41.28

6.73

7.00

0.38

± .50 ± .50

± .25 ± .10

max max

Figure 9. Mounting configuration dimensions (LW model)

Cheetah 9LP Installation Guid e, Rev. B 37

-Z-T//

-Z-

-X-

[1]

-Z- -X-N

-X-

-Z-

Notes:

Mounting holes are 6-32 UNC 2B, three

[1]

on each side and four on the bottom. Max screw penetration into side of drive is 0.15 in. (3.81 mm). Max screw tightening torque is 6.0 in-lb (3.32 nm) with minimum full thread engagement of

0.12 in. (3.05 mm).

Dimension Table

Inches

1.028

max

5.787

max

4.000

± .010

3.750

± .010

.125

± .010

1.750

± .010

1.625

± .020

1.122

± .020

4.000

± .010

.250

± .010

1.638

± .010

.181

± .020

.040

max

1.625

± .020

2.618

± .010

.276

± .040

.015

max

.015

max

Millimeters

26.10

147.00

101.60

92.25

3.18

44.45

41.28

28.50

101.60

6.35

41.61

4.60

1.20

41.28

66.50

7.00

0.38

max max ± .25

± .25

± .25 ± .50 ± .50 ± .25 ± .25 ± .25 ± .50

max

± .50 ± .25 ± 1.02

max max

Figure 10. Mounting configuration dimensions (LC model)

38 Cheetah 9LP Installation Guide, Rev. B

Formatting the drive

The drive has been low level formatted at the factory. You do not need to perform another low level format on t his drive unless you decide to perform certain diagnostics through the host adapter.

If you do decide to perform a low level format, do not abort the format as this is likely to make the drive inoperable. Also, it is a good idea to protect against power failure or other power interruptions during the format.

The drive will typically take less than 30 minutes to perform the format. Do not reboot or otherwise disrupt the process.

Caution.

1. Turn on DC power.

2. Boot the system from a system floppy disc or from a previ-

3. Format the disc drive. Cheetah 9LP disc drives are

Quick reference desktop system notes

• Hardware platform, operating system, and host adapter variations can limit access to the full capacity of this and other high

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 that previously has been used to store data, unless your intention is to erase all user data. Seagate is not resp onsibl e for l o st user data.

ously installed hard disc drive if there is one.

designed to operate with a variety of operating systems. Please refer to your system or SCSI controller manual for information about formatting and setting up the drive. Some quick desktop system notes are provided below.

Cheetah 9LP Installation Guid e, Rev. B 39

capacity drives. Refer to your system or utility manual for detailed instructions.

• DOS/Windows 3.1/Windows 95. Se t the drive type in CMOS to “

Zero,” “None,”

and FORMAT.EXE.

• Macintosh. Use a third-party drive ut ility or Apple’s Drive Setup (version 1.3.1 or later) to initialize the drive. Note: versions of Apple Drive Setup prior to version 1.3.1 do not recognize nonApple drives .

or “

No har d drive ins talled

.” Use FDISK.EXE

40 Cheetah 9LP Installation Guide, Rev. B

LW drives

LW drives sectionSetting the SCSI ID jumpers

Use the J6 connector to set the SCSI ID (see Figure 11). To change the SCSI ID, instal l jumpers as shown in the illustration.

Drive Front

Jumper Plug (enlarged to show detail)

Pin 1

SCSI ID = 0 SCSI ID = 1 SCSI ID = 2 SCSI ID = 3 SCSI ID = 4 SCSI ID = 5 SCSI ID = 6 SCSI ID = 7 SCSI ID = 8 SCSI ID = 9 SCSI ID = 10 SCSI ID = 11 SCSI ID = 12 SCSI ID = 13 SCSI ID = 14 SCSI ID = 15

Figure 11. Setting the SCSI ID on LW drives

Cheetah 9LP Installation Guide, Rev. B 41

LW drives

Terminat ing the d rive

ST39102LW and ST34502LW drives do not have internal terminators or any other way of adding internal termination to the drive. You must provide external termination to these drives when termination is required. This is normally done by adding an in-line terminat or on the cable.

Note.

42 Cheetah 9LP Installation Guide, Rev. B

LW drives

Terminat or power

You can configure this drive to supply termination power to the SCSI bus by placing a jumper on J2 pins 1 and 2. The default setting is no jumper, meani ng that some other source (other than this drive) i s suppling termination power to the SCSI bus.

Term. Power to SCSI Bus Host adapter or other device provides

term power to external terminator

J2 Jumper (enlarged to show detail)

Drive Front

SEDSMEWPP

R E

Figure 12. Setting terminator power jumpers

EST

Pin 1 Pin 2

Cheetah 9LP Installation Guide, Rev. B 43

LW drives

Other appli cable jumper option s

Sev eral other jumper options are available as illustrated.

SEDSMEWPP

Reserved Single-Ended Mode option

Use single-ended or low voltage differential mode. Force the drive to operate only in single-ended mode.

Delay Motor Start option (valid only if the Enable Motor Start jumper is not connected)

Disable the Delay Motor Start option (default). Motor start delay equal to the SCSI ID multiplied by 12 seconds.

For example, if the SCSI ID = 2, the drive starts in 24 seconds. Motor Start option

Disable motor start (default). The drive starts according to the Delay Motor Start option.

Enable motor start. The drive waits for the Start Unit command from the host before starting the spindle motor.

Write Protect option Write protect = Off (enables writing – default). Write protect = On (disables writing).

Parity Check option Enable parity check of SCSI bus (default). Disable parity check.

Pin 1 Pin 2

EST

Drive

J2 Jumper

(enlarged to

show detail)

Front

Figure 13. Additional jumper options

44 Cheetah 9LP Installation Guide, Rev. B

LW drives

68 Pin

SCSI I/O Connector

SCSI Address A0 SCSI Address A1 SCSI Address A2 SCSI Address A3 No connection +5V Fault LED* Vendor Unique* Reserved Activity LED* Ground

These pins are driven low for

250 ms after PWR ON or RESET to allow jumper selectable SCSI ID as shown to the right.

Pin 1

Pin 12

J5/J1A [2][4]

J1A Pin 1

Pin 1

1P2P3P4P

J1-DC Power

SCSI ID = 0 SCSI ID = 1 SCSI ID = 2 SCSI ID = 3 SCSI ID = 4 SCSI ID = 5 SCSI ID = 6 SCSI ID = 7 SCSI ID = 8 SCSI ID = 9 SCSI ID = 10 SCSI ID = 11 SCSI ID = 12 SCSI ID = 13 SCSI ID = 14 SCSI ID = 15

Figure 14. Alternate ID select and LED connection

Cheetah 9LP Installation Guide, Rev. B 45

LW drives

Drive Active indicator

The drive Active LED indicator connections are show n below.

Drive Front

Jumper Plug

(enlarged to show detail)

Pin 1

CATH

Reserved Activity LED

Reserved The shaded pins are shipped with a cover installed. Do not install jumpers on these pins. Retain the cover unless you install a 20-pin plug.

Note: On some LEDs the flat side of indicator is cathode.

Figure 15. Drive Active LED indicator connections

46 Cheetah 9LP Installation Guide, Rev. B

LC drives

LC drives sectionSetting the SCSI ID jumpers

The SCSI ID is normally set over the SCSI bus by the host system. You can also use the J6 jumper block to set the SCSI ID (Figure 16). To change the SCSI ID, install jumpers as shown in the illustration.

Drive Front

Jumper Plug

(enlarged to show detail)

Pin 1

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 SCSI ID = 9 SCSI ID = 10 SCSI ID = 11 SCSI ID = 12 SCSI ID = 13 SCSI ID = 14 SCSI ID = 15

Figure 16. Setting the SCSI ID on LC drives

Note:

[1] Do not remove cover from pins 13 through 20 (darkened area).

Cheetah 9LP Installation Guide, Rev. B 47

LC drives

Termina ting th e dr ive

LC model drives do not have internal terminators or any other way of adding internal termination to the drive. You must provide external termination to these drives when termination is required. Since this drive is designed to be plugged into a backpanel or other host enclosure without cabling, this is normally done by enab ling termination on the backpanel or plane.

Note.

Terminat or power

ST39102LC and ST3450 2LC drive s cannot be configur ed to provide termination power.

48 Cheetah 9LP Installation Guide, Rev. B

LC drives

Other a ppl i ca ble jumper options

Other option jumpers are available as illustrated below.