Seagate Hawk 4XL Installation Manual

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Hawk 4XL

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Disc Drive

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ST34555N/W

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Installation Guide

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Contents

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

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

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

Wichtige Sicherheitshinweise ......................................................4

Regulator y agency compliance....................................................7

Seagate te chnical suppo rt services........... .. ....... ....... ...... ....... .. ...9

General description........... .. .................. ....... .. ....... ........... .. ....... .14

Initial setup information..............................................................18

Kühlung des Systems.......... .. ....... .. ........... ....... .. ....... ...... ....... .. .27

Installation des Laufwerkes

und Anschl uß der Kabel. .. ....................... .. ....... .. ........... .. ....... .29

N drives sec tion ... ....... ....... ........ ....... ....... ....... ........ .. ........ ....... ..36

W drives section.........................................................................40

©1997 Seagat e Technol ogy, Inc. All rights reserved
Publ ication Number: 77767507, Rev. A
October 1997

Seagate, Seagate Technology, and the Seagate logo are regis-

tered trademarks of Seagate Technology, Inc. Hawk, SeaFAX,
SeaFONE, SeaNET, SeaTDD, and SeaBOARD 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 without
written permiss ion from Seagate Technology, Inc.

Hawk 4XL Installation Guide, Rev. A 1

Preface

This manual contains information for users of the Seagate®
Hawk 4XL SCSI disc drives. It provides support servi ces, perfor­mance specifications, and initial setup information. Additional
information is available. Contact Seagate technical support ser­vices as descri bed in this manual if you need ass istance .

Electrostatic discharge protection

Caution.

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

All drive electronic assemblies are sensitive to static electricity,
due to the electrostatically sensitive devices used within the
drive circui try. Although som e devices such as me tal-o xide semi­conductors are extremely sensitive, all semiconductors, as well
as some resistor s and capacitors, may be damaged or degr aded
by exposure to static el ectricity.

Electrostatic damage to elect ronic de vices may be caused by the
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 inst all ing or servicing the driv e:

• 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 av oid potential ly damaging st atic discharges.

• Turn off the power before removing or installing the DC power
ca bl e.

2 Hawk 4XL Installat ion Guide, Rev. A

• Do not remove any circui t boards from the drive.

• Never use an ohmmeter on any circuit boards.

• When installing the dri ve on a carrier or tra y, d ischarge the car­rier or tray prior to inserting it into the system.

Important safety informati on and prec autions

Caution.

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

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 injur y. The war nings
point out conditions or practices that may endanger you or oth­ers. The cauti ons point out condi tions or practices that may dam­age the unit, possibly making it unsafe for use.

Always observe the following warnings and precautions:

• Fol low all cautions and warnings in t he procedures.

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

• Use caution when troubleshooting a unit that has voltages
present . Turn 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
stacked vertically, pay special attention to the top where tem­perat ures are usual ly hi ghest.

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

Hawk 4XL Installation Guide, Rev. A 3

• 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 warranty.

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

• Do not attempt to disassemble the HDA. It is not field repair­abl e. If the sealed HDA i s opened by personnel not performin g
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, CSA C22.2 950­M89, 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 cert ify component
assemblies, such as the Hawk 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 v oltages.

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 Depar tment to assist the subsystem
designer.

4 Hawk 4XL Installat ion Guide, Rev. A

Wichtige Sicherheitshinweise

Vorsicht.

Beim Testen des Laufwerks auf dem Prüftisch ist
Fremdbelüf tung vor zusehen, u m eine ausreichen de Kühlung der
Laufwerk komponenten sicherzu stellen.

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 Risik o behaft et ist.

Die Warn- und Vorsichtshinweise sind nicht allumfassend! Es ist
uns einfach nicht möglich, alle Wartungsmethoden oder die
eventue llen Risiken jeder Methode zu kennen, zu beurteile n 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 Verfahren weder Ihre
persönl iche Sicherheit noch die Leist ung der Einheit gefährdet.

Beachten Sie in jedem Fall die folgenden Warn-und Vorsicht­shinweise:

• Beachten Sie alle Warn- und Vorsichtshinweise in diesem

Handbuch.

Hawk 4XL Installation Guide, Rev. A 5

• 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 aus , bev or Sie mit den Instal lations- und Ent fe rnungsar­beiten beginnen.

• 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 Protec-

tion” angegebenen Sicher heitsmaßnahmen.

• 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 führen.

• Die vormontierte Kopf- und Festplatteneinheit (HDA) nicht aus

dem Laufwerk nehmen! Falls die HDA beschädigt ist, schic ken
Sie das gesamte Laufwerk zur Reparatur ein.

• Die HDA ist nicht vor Or t reparierbar und darf nicht auseinan-

dergenommen 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.

6 Hawk 4XL Installat ion Guide, Rev. A
Als Teilkomponen te ist d ieses Lauf werk f ür die Install ation und

den Be trie b in Übere ins timm ung m it U L 195 0, E N60 950, CSA
C22.2 950-M89 und VDE0805 vorgesehen.

Seagate ist ständig bemüht, die Zulassungsfähigkeit von
Seag ate-Prod ukten im Rahmen d er gegenwä rtig g eltenden
Standards zu gewährleisten. Zu den typischen Anwendungen
dieser Festplattenwerke zählen Systemeinbau durch den
Kunde n und die Konst rukti on v on Untersy stemen. Si cherhei tsbe­hörden ge währen ein e bedingt e Zulassung für K om ponenten wi e
das Hawk-Festplattenlaufwerk vorbehaltlich der endgültigen
Zulasssung im Endprodukt. Designer von Untersystemen sind
dafür verantwortlich, die Voraussetzungen für die Einhaltung
sicherheits- oder aufsichtsbehördlicher Vorschriften in ihren
Endprodukten und - falls gesetzlich vor geschrieben - für die
Zulassung zu schaffen. Eine Grundvoraussetzung zur Einhal­tung der Sich erheit sanforde ru ngen ist di e Be reits tellun g e ines
Überlastschutzes für die SELV-Ver sorgungsspannungen des
Laufwerks.

Dieses Gerät ist eine Baugruppe und unterliegt als solche nicht
den Anforderungen der FCC oder ähnl icher nationaler Behö rden
für eigenständig e Ge rät e. Techn ische Testergebnisse zu ele ktro­magneti sche Str ahlu ng sind für Designer v on Unter systemen auf
Anfra ge von der Seagat e-Sicherheitsabteilung erhältlich.

Hawk 4XL Installation Guide, Rev. A 7

Regulatory agency compliance

Elect r omagn eti c s u scep t ibility

As a component assembly, the drive is not required to meet any
suscept ibility performance requi rements. It is the responsibility of
those integrating the drive within their systems to perform those
tests required and desi gn their system to ensure that equipment
operat ing in the same system as the drive or external to the sys­tem does not adversely affect the perfor mance of the drive. See
Tables 2, DC power requirements.

Elect r omagn eti c c o m pli an c e

Seagate uses an independent laboratory to confirm compliance
to the directives/standard(s) for CE Marking and C- Tick Marking.
The drive was test ed in a representative system for typical appli­cations. The sel ected system represents the most popular char­acteri stics for test platforms. The system configuratio ns include:

• 486, Pentium, and PowerPC microprocessors

• 3.5-inch floppy disc drive

• Keyboard

• Monitor/display

•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
shall confirm EMC compliance and provide CE Marking and C­Tick Marking for their product.

8 Hawk 4XL Installat ion Guide, Rev. A

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 May 1989 as amended by Dire cti ve 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).

Hawk 4XL Installation Guide, Rev. A 9

Seagate 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 need addi tio nal assi stance wit h your Seagate
Seagate products, use one of the Seagate technical support ser­vices listed 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 comm only
asked questions, troubleshooting tips, and specifications for disc
drives and tape drives. This service is available 24 hours daily

®

drive or other

and requires a touch-tone phone. International callers can reach
this automated self-help service by dial ing 408-456-4496.

Online ser v ic e s

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 downl oad software for installing
and analyz ing your drive.

SeaNET™

You can obtain technical information about Seagate product s
over th e Inter n et fr om S eagate ’s Wo rld Wide Web ho me p age

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

. You can also send E-mail with your que sti ons

or Seagate’s ftp server

(ftp://

DiscSupport @ Seagate.com

to

Seagate.com

.

or

TapeSupport @

10 Hawk 4XL Instal lation Guide , Rev. A

Se agate Co m p uSe rve forum

Online technical support for Seagate products is available on
CompuServe. To access our technical support forum, type

seagate

. Thi s foru m provides info rmation similar to that found on

go

SeaBOARD. In addition, you can type questions or browse
through previous questions and answers on the forum mes­sages.

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

Aust r alia 61-2- 9756 -2359
England 44-1628-478011
France 33 1-48 25 35 95
Germany 49-89-140-9331
Taiwan 886-2-719 -6075
Thailand 66 2-531-8111
USA Disc: 405-936-1600; Tape: 405-936-163 0

Hawk 4XL Installation Guide, Rev. A 11

FAX ser vic es

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

Aust r alia 61-2- 9756 -5170
England 44-1628-894084
USA Disc: 405-936-1620; Tape: 405-936-164 0

Seagate 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

Aust r alia 61-2- 9725 -4052
England 44-1628-890660
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- 556-7294/4251
Singapor e 65-488-7528
Taiwan 886-2-715 -2923
USA Disc: 405-936-1685; Tape: 405-936-168 3

12 Hawk 4XL Instal lation Guide , Rev. A

Direct-supp ort serv ice s

Seagate technical support

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

Location Phone number

Australia 61- 2-9725-3366 (9:00
England 44-1628-894083 (10:00

2:00

P.M

.

to 5:00

P.M

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

2:00

P.M

.

to 5:00

P.M

A.M

A.M

.

, M–F)

A.M

.

, M–F)

xxxx

.

to 5: 0 0

.

to 1:00

.

to 12:30

).

P.M

P.M

P.M

.

, M–F)

.

,

.

,

Germany Disc: 49-89-140-9 332; Tape: 49-89-140-9333

(9: 30

A.M

.

to 12:30

P.M

.

, 2:0 0

P.M

.

to 4:00

P.M

M–F)
Hong Kong 852-2368 9918
Korea 82-2- 556-8241
Singapor e 65-488-7584 (9:00

A.M

.

to 12:00

P.M

.

, 2:00

P.M

.

,

.

P.M

to 5:00

.

, M–F)
Taiwan 88 6-2-514-223 7
USA Please dial 1-800-SEAGATE or 408-456-4496

for the specific product telephone number.
(8:00

A.M

.

to 1:15

P.M

.

, 2:30

P.M

.

to 7:00

P.M

.

,

Central time, M–F)

SeaTDD™ 405-936-1687

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

A.M

sages with a technical support specialist between 8:00
1:15

P.M

. and 2:30 P.M. to 7:00

P.M

.

(Central time) Monday

.

to

through Friday.

Hawk 4XL Installation Guide, Rev. A 13

Customer service centers

Seagate direct OEM, Distribution, and Systems Integrator cus­tomers should contact their Seagate service representative for
warr anty informati on. Other custom ers should contact their 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 Australia 65-485-3595 65-485-4980
Europe, Middle East,

and Africa 31-2031-67300 31-2065-34320
Japan 81-3-5462-2904 81-3-5462-2979
USA 1-800-468-3472 405-949-6740

Other Americas (Brazil,

Canada, Mexico) 405-94 9-6706 405-949-6738

Manufactur er’s representatives

Brazil

MA Informatica 55-11- 810-7794 55-21- 253-6467
Canada

Memofix

Adtech

905-660-4936
905-812-8099

905-660-8738
905-812-7807

1-800- 624-9857

Me xico

Abico m Seamax

SA DE CV 525-54 6-6965 525-546-4888

14 Hawk 4XL Instal lation Guide , Rev. A

General description

Hawk 4XL SCSI disc drives are high-speed, random-access dig­ital-data storage devices.

The drive is a component for installation in an enclosure
designed for the dr ive. This is often a rack within the system or
an external enclosure designed to house one or more d isc drives
or ot her per ipheral unit s. In either case, the disc dr ive must
receive adequate cooling (refer to “Providing adequate cooling”)
and it must be sufficiently grounded and shielded from emis­sions.

*

*Model “N” version with 50-pin SCSI I/O connector

Figure 1. Hawk 4XL family drive

Hawk 4XL Installation Guide, Rev. A 15

Table 1. Drive characteristics

Inte rface Ult ra SCSI [1 ]
Capacity

Formatted [2] 4.55 Gbyte

Unformatted 6.5 Gbyte
Recording

Cylinders (user ) 6,311

Read/write data heads 8
Access time [3]

Average read 10.1 msec

Average write 11.2 msec
Disk rotation

RPM 7,200 r/min

Average latency 4.17 msec
Inte rn a l tran sfer rate

(variable wi th zone) 92–140 Mbit s/sec
Maximum synchronous SCSI transfer rate

N model 20 Mbytes/sec

W model 40 Mbytes/sec
Multi-segmented cache 480 Kbytes

[1] Can also be operated according to SCSI-1 and SCSI-2 protocols.

Referred to also as “SCSI Fast-20.”

[2] Standard factory units are formatted 512 data bytes per sector with

sparing equivalent to 118 spare sectors per six cylinder region.
Spares are located at the end of each sparing region.

[3] Includes controller overhead.

16 Hawk 4XL Instal lation Guide , Rev. A

Table 2. DC power requirements (Amps)

ST34555N/W
Single-ended

Voltage +5V +12V
Regulation [5] ±5% ±5%[2]
Max. operating current

DC3σ [1] 0.81 0.95
Avg. idle current DCX

[1] 0.46 0.54

Max. starting current

(peak DC) DC3σ [3]

(peak AC) AC3σ [3]

0.78 2.44

3.1

Dela yed motor start (max)

DC3σ [1][4] 0.48 0.20
Peak operating current

Typical DCX

Maximum DC3σ [1]

Maximum (peak) 3σ

[1][6]

0.75

0.81

1.5

0.76

0.95

2.5

[1] Measured with an average reading DC ammeter. Instanta-

neous +12V current peaks will exceed these values.

[2] A –10% droop is permissible during initial start of t he spindle

but must return to ±5% before reaching 7,200 RPM. The
±5% must be maintained after the drive signifies that its
power-up seq uence has been completed and that the drive is
abl e to accept selec ti on by the host init iator.

[3] For +12V current profile information, call Seagate technical

support services.

[4] This condition occurs when the Motor Star t option i s enabled

and the drive has not yet recei ved a Start Motor command.

Hawk 4XL Installation Guide, Rev. A 17
[5] For conducted noise immunity information, call Seagate

techni cal support services . The specified voltage tol erance is
incl usive of ripple, noise, and t ransient response.

[6] Operating condition is defined as random seek read opera-

tions with a block count of 64.

General No tes from Table 2.

1. Minimum current loading for each supply voltage is not less

than 4% of the maximum operating current shown.

2. Use separate ground returns for +5V and +12V supplies.

3. Where power is provided to multiple drives from a common

supply, carefully consider individual drive power require­ments. Where multiple units are powered on simul taneously,
be sure t he peak start ing curre nt is available to each device.

Table 3. Dimensions of the drive

inches mm

Heigh t 1.00 25.4
Width 4.00 101.6
Depth 5.74 145.8
Weight 1.5 pounds (0 .68 ki lograms)

18 Hawk 4XL Instal lation Guide , Rev. A

Initial setup information

The general information beginning on this page applies to all of
the Hawk 4XL 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.

Drive models Page

ST34555N 36
ST34555W 40

G e ne ral infor mation

The following general information topics are discussed:

• SCSI ID jumpers

• Drive termination

• Terminator power

• Interface driver s and data path width notes

• Other applicable jumper options

• Provi ding adequate cooling

• Mountin g the dri ve and connecting cab les

• Formatting the drive

Hawk 4XL Installation Guide, Rev. A 19

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 is lowest priority in an 8-bit I/O system. ID8 is
lowest priority in a 16- bit I/O system. The lower p riori ty SCSI IDs
are normally used for other SCSI devices such as this Ha wk disc
drive.

Note.

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 manual
for details about its requirements for proper SCSI device
ins t al lat ion .

This drive is a SCAM (SCSI Configured Auto Magically)
compli ant drive. If the system i nto which you are i nstalling
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 w ants it to have. The system may or m ay 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 Hawk disc drives are factor y 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

20 Hawk 4XL Instal lation Guide , Rev. A
the case, change the ID so that each device on t he 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 recommendations.

Drive termination

If y ou are i nstalling a Hawk driv e 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.

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 sho w s two addit ional
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 i n the middle of the chai n. Also, some controllers 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 particular system.

Hawk 4XL Installation Guide, Rev. A 21
For information about how to terminate your drive, refer to the

appropriate drive-specific section.

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 ter m ination

Term in at or power

You usually will not need to change this option and can nor mally
leave the drive configured as it was shipped from the factory. For
information about how to change the terminator power option on
your drive, refer to the appropriate drive-specific section.

I/O circui ts and da ta p a th wi dt hs

“W” models have a “wide” (16-bit) SCSI data bus rather than the
standard (non-wide) 8-bit SCSI data bus; however, you can use
these wide drives on a standard (non-wide) 8-bit data bus using
a terminated 68-pin to 50-pin SCSI cable.

Figures 3a, 3b, 3c, and 3d show typical drive connections. The
following table lists the maximum cable lengths and number of
devices with single-ended I/O circuits allowed on a daisy-chain
cable for <

10 and <20 M transfers/sec I/O data transfer ra tes.

22 Hawk 4XL Instal lation Guide , Rev. A

Table 4. Cable characteristics for single-ended circuits

I/O transfer rate

Maximum number of
devices on lin e

Maximu m cable
length allowed

<10 M transfers/s 8 (reg . SCSI bus) 6 meters (1 9.7 ft.)

10 M transf ers/s 16 (wid e SCSI bus) 6 meters (1 9.7 ft.)

<

20 M transfers/s 4 (reg./wide SCSI bus) 3 meters (9.8 ft.)

<

20 M transfers/s 8 (reg./wide SCSI bus) 1.5 meters (4.9 ft.)

<

For devices having differential I/O circuits, a maximum cable
lengt h of 25 meters (82 feet) is al lowed. A maximum of 8 devi ces
can be connected on an 8-bit wide data bus, and a maximum of
16 devi ces can be connected on a 16-bit wi de data bus.

Hawk 4XL Installation Guide, Rev. A 23

HDA

Pin 1

Figure 3a. Fifty pin I/O connection to drive (“N” model)

HDA

Pin 1

Figure 3b. Sixty-eight pin connection to drive (“W” model)

24 Hawk 4XL Instal lation Guide , Rev. A

“N” Model

Drive

SCSI ID X

(or last drive)

[1]

Additional
SCSI devices

Pin 1

(check your

SCSI ID 1

adapter for Pin 1 location)

SCSI ID 7

Host

SCSI ID 0

Adapter

PCB

[1] “X” means up to 6 or the maximum allowable number of devices on

the S CSI bus. See Tab le 4 and system document ation.

Figure 3c. Multip le dri ve connecti on to host adapter

Hawk 4XL Installation Guide, Rev. A 25

W” Mod e l

Drive

SCSI I D X

(or la s t drive)

[1]

Additional
SCSI d e vices

Pin 1

(check your

adapter for Pin 1 location)

SCSI I D 1

SCSI I D 7

SCSI I D 0

Host

Adapter

PCB

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

the S CSI bus. See Tab le 4 and system document ation.

Figure 3d. Multiple-drive connection to host adapter

26 Hawk 4XL Instal lation Guide , Rev. A

Providing adequate cooling

The enclosure design must ensure adequate cooling for the
drive. The maximum ambient temperature is 50°C at drive loca­tion. Short-term excursions up to t his value are permitted, but f or
maximum reliability, the temperature should be kept 15°C below
this value.

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 sources.

Figure 4 shows two design approaches with one or more fans
used to generate air flow. The air-flow patterns can be created
by t he fans either pushing or dr awing air. The overal l f low patt ern
can be dire cted from front to bac k, back to f ront, or side to side.

Hawk 4XL Installation Guide, Rev. A 27

Kühlung des Systems

Die Gehäusekonstr uktion muß eine aus reichende Kühlung de s
Laufwerk es ge währleis ten . Die Umgebun gstem perat ur darf max­imal 50°C bet ragen.

Wir empfehlen, das Laufwerk so zu orientieren oder den Luft­strom so z u lenken, daß der ge ringste Lufts tromwiders tand
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 Minimum beschränkt.

Abbil dun g 4 zei gt zwei Kons tru ktion smö glich keiten, bei d enen
ein oder mehrere Lüfter den Luftstrom erzeugen. Der Luftstrom­verlauf wird durch di e Lüfter gesteuert, die entweder Luft einbla­sen od er ab ziehen. Gene rell kan n der Luf tstrom en twed er von
vorne nach hinten oder von hinten nach vor ne verlaufen.

28 Hawk 4XL Instal lation Guide , Rev. A

g

)

.

Above unit
Über der Einheit

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)

Under unit
Unter der Einheit

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

Hinweis. Luftstrom in der angezeigten Richtung oder in

um

ekehrter Richtung (von Seite zu Seite

Figure 4. Suggested air flow
Abbildung 4. Empfohlener Luftstromverlauf

Above unit
Über der Einheit

Under unit
Unter der Einheit

Hawk 4XL Installation Guide, Rev. A 29

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 b y 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 dri ve to the host system ’s chassis using f our 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 evenly. Do n ot over-tighten or force the screw if it does
not seem to scr ew in easily, because this means the thr eads
are not properly aligned. In this case, back the screw out
and try again.

Installation des Laufwerkes
und An sc hl uß der Kabel

Beachten Sie beim Handhaben und Anfassen de r Anschlußst if te
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.

30 Hawk 4XL Instal lation Guide , Rev. A

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

am Ge häuse des Host-Syste ms. Die beiden Sei ten des
Laufwerkes sind mit jeweils zwei Befestigungslöchern
versehen, die Unterseite des Laufwerkes weist vier weitere
Befestigungslöcher auf.

Gem essen von der Außenfläche de s Gehäuses dü rfen die
Schrauben maximal 3,81 mm in die Befestigungslöcher des
Geh üuses hi neinra gen. Die S chraub en müs sen gle ich­mäßig, jedoch nicht zu fest, angezogen werden. Wenn sich
eine Schraube nicht ohne Widerstand einschrauben läßt,
sind die Gewinde nicht korrekt aneinander ausge richtet. In
diesem Fall die Schraube nicht in das Gewindeloch
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 kor rekt hergestellt sind.

3. Verify that you have correctly installed jumpers.

3. Stellen Sie sicher, daß die Kennungsbrücken installiert sind.

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

Take car e not to st retch or crimp this cable, and do not bloc k
the syst em’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
defin ed in IEC 950. F igure 5 provides the pin information for

Hawk 4XL Installation Guide, Rev. A 31

Power

Cable

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-Steckver binder

des L aufwerkes an. Das Kab el darf ni cht gedehn t oder
gedrückt werden und es darf den Luftstrom zur Kühlung des
Systems ni cht behindern.

Das Laufwerk wird über einen 4-poligen, neben dem SCSI­Ans chluß b efestigten S teckverbinde r mit G leich strom ver­sorgt. Der Ausgang eines Netzteils muß SELV (safety extra
low voltage) nach I EC 950 entsprech en. Abbildung 5 zeigt
die Steckerbelegung für den Gleichstromanschluß. Zum
Anschluß des Gleichstromkabels an das Laufwer k das
Kabelende in den Gleichstromanschluß des Laufwerkes
stecken.

DC Power

Connector

4 3 2 1

Pin

Pin

1
2
3
4

Power

1

+12V

2

+12V ret

3

+ 5V ret

4

+ 5V

Gleichstrom

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

Figure 5. DC power connector
Abbildun g 5. Glei chstromanschluß

32 Hawk 4XL Instal lation Guide , Rev. A
Note. Si gnal ground on the power control boar d (PCB) and the

head and di sc assembly (H DA) are connected toget her in
this drive and you cannot separate them. The equipment
in which you have mounted the drive is connected
directly to the HDA and PCB without electrically isolating
shock mounts. Maximizing the conductive contact area
between HDA ground and system ground may reduce
radiated emis sions.

If you do not want the system chassis to be connected to
the HDA/PCB ground, you must provide a nonconductive
(electri cally isolating) method of mou nti ng the driv e in th e
host system. This may increase radiated emissions and
is the sys tem designer’s responsi bility.

Hinweis:

Die Si gnalerde auf der Stromr egelungska r te (PCB) und
der Kopf- und Festplatteneinheit (HDA) sind in diesem
Laufwerk miteinander verbunden und können nicht
getrennt werden. Das Gerät, in das Sie das Laufwer k
eingebaut haben, ist ohne elektrisch isolierende
Stoßdämpfer direkt an die HD A und PCB angeschlossen.
Die elektromagnetische Strahlung kann reduziert wer­den, indem Sie eine möglichst gr oße leitende Kontak­fläche zwischen der HDA-Erdung und der Systemerdung
vorsehen.

Wenn Sie das Systemgehäuse nicht an die HDA/PCB­Erdung anschließen wollen, müssen Sie das Lauf werk
auf nichtleitende Weise (galvanisch isolier t) im Host-Sys­tem e inb auen. D ie d araus u. U. resul tiere nde vers tärkt e

Hawk 4XL Installation Guide, Rev. A 33

elektromagnetische Strahlung fällt in den Zuständigkeits­berei ch des Systemdesign ers.

5. Replace t he host system’s cove r.

5. Setzen Sie das Gehäuseoberteil des Host-Systems wieder

auf.

34 Hawk 4XL Instal lation Guide , Rev. A

[4]

C

[2]

[3]

[1]

G

L

D

F

E

A

Notes:

[1] Mounting holes three on each side, 6-32 UNC.
Max screw length into side of drive 0.15 in.
(3.81 mm). Screw tightening torque 6.0 in-lb
(.675 NM) max with minimum thread
engagement of 0.12 in. (3.05 mm).

[2] Mounting holes four on bottom, 6-32 UNC.
Max screw length into bottom of drive 0.15 in.

B

(5.08 mm). Screw tightening torque 6.0 in-lb
(.675 NM) max with minimum thread
engagement of 0.12 in. (3.05 mm).

J

[3] Power and interface connectors can extend
past the "A" dimension by 0.040 in. (1.02 mm).

[4] Decorative front panel (optional).
[5] Although the illustration shows the 50 pin I/O

connector drive model, mounting hole locations
are the same for all Hawk 4XL models.

N

H

K

[4]

M

Inches

5.74

A

4.00

B

1.00

C

2.362

D
E

4.000

F

G

1.750

P

H
K
M

N
P

3.750

J

2.370

1.00

L

4.000

0.19

0.015

.620
.250

± .010
± .010

+ .021
– .009

± .010
± .020
± .010

+ .010
– .005

± .010
± .010
± .020
± .010
± .010
± .010

max

Millimeters

145.80

101.60

25.40

+ .53

60.00

15.75

101.60

6.35

44.45

95.25

60.20

25.4

101.6

4.83

0.381

Figure 6. Mounting configurat ion dimensions

± .25
± .25

– .22

± .25
± .50
± .25

+ .25

– .12

± .25
± .25
± .50
± .25
± .25
± .25

max

Hawk 4XL Installation Guide, Rev. A 35

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
that previously has been used to store data, unless
your intention is to erase all user data.

Note.

Seagate i s not re sponsibl e for lost user data.

1. Turn on DC power .

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

ously installed hard disc drive if there is one.

3. Format t he dis c dri ve. Hawk 4X L disc drives ar e design ed to

operate with a variety of operating systems. Please refer to
your system or SCSI controller m anual f or inf orm ati on about
formatting and setting up the drive. Some quick desktop
system not es are provi ded below.

Quick reference desktop system notes
Note.

Refer to your syst em or uti lity manua l for detailed instruc­tions)

• DOS. Set the drive type in CMOS to “

hard drive installed

.” Use FDISK.EXE and FORMAT.EXE. Sys-

Zero,” “None,”

or “

No

tems that have operating system Windows 95 release 950B or
later do not need to part it ion the drive.

• Macintosh. Use a third-party drive utility (Apple’s HD Setup

utility only works with drives having spec ial Apple firmware ).

36 Hawk 4XL Instal lation Guide , Rev. A

N drives

N/ND drives sectionSetting the SCSI ID jumpers

Use the J6 connector to set the SCSI ID (see Figure 7). To
change the SCSI ID, install jumpers on the appropriate pins as
shown i n 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

Reserved

J6

L

R

R

E

E

E

S

A2A1A

S

D

0

(default)

SCSI ID = 7

Figure 7. Setti ng the SCSI ID on model N drives

Hawk 4XL Instal lation Guide, Rev. A 37

N drives

Terminat ing the d r i v e

“N” model 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

“TE”

from pins 15 and 16 of connector J2 (see Fig­ure 8). If you install the drive on the end of the SCSI bus, enable
termination by i nstalling a jumper on pins 15 and 16 of connector
J2.

Pin 1

J2

T

DSMEWPP

E

Enable SCSI terminator (default)
Disable SCSI terminator

J6

Drive
Front

J2 Jumper Type

(enlarged to
show detail)

R
ESTPT

D

J2

SCSI I/O

Connector

DC Power
Connector

P

J1

Figure 8. Terminatin g the dri ve

38 Hawk 4XL Instal lation Guide , Rev. A

N drives

Term in at or power

There are three possible terminator power (

TP

) configurations
for “N” model driv es (see Figure 9). You will not normall y need to
change this option and can leave the drive configured as it was
shipped from the factory.

Pin 1

J2

TEDSMEWPP

“N” model drives
Term. Power from Drive (default)

Term. Power to SCSI Bus
Term. Power from SCSI Bus

Position A

R

ESTPT

D

P

J2

J6

Drive
Front

J2 Jumper Type

(enlarged to
show detail)

SCSI I/O

Connector

DC Power
Connector

Figure 9. Setting terminator power jumpers

J1

Hawk 4XL Instal lation Guide, Rev. A 39

N drives

Other applicable jumper options

Several other jumper options are available as i ll ustrat ed.

Drive with
HDA up, PCB
down, viewed

from front

Reserved

HDA

L

R

E

E

D

S

R
E
S

Reserved
Remote

11

LED

12

Shipped with cover installed.

Do not remove.

Do not install jumpers

on these four positions.

Drive Front

Pin 1

A2A1A

J6

J6

0

CATH

J6

Jumper Type

(enlarged to
show detail)

Pin 1

End

J2

Reserved
Delay Motor Start option

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

Disable the Delay Motor
Start option.

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.

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.

Pin 1

(default)

(default)

J2

DC Power
Connector

J1

SCSI I/O

Connector

J2 Jumper Type

(enlarged to
show detail)

Figure 10. Additional jumper options

Pin 1

Write Protect option
Write protect = Off

(enables writing).
Write protect = On

(disables writing).
Parity Check option

Enable parity check of
SCSI bus.

Disable parity check.

(default)

(default)

40 Hawk 4XL Instal lation Guide , Rev. A

W drives

W/WD drives sectionSetting the SCSI ID jumpers

Use the J6 jumper block to set the SCSI ID (Figure 11). To
change the SCSI ID, install jumpers on the appropriate pins as
shown in the illustration. Optional connections to switching cir­cuits in host equipment are provided on J1 auxiliary to set the
SCSI ID (see Figur e 12).

Drive
Front

Jumper Plug

(enlarged to
show detail)

J6

Pin 1

L

Reserved

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

R

E

E

A2A3A1A

D

S

0

Figure 11. Setting the SCSI ID on model W drives

SCSI ID = 14
SCSI ID = 15

Hawk 4XL Instal lation Guide, Rev. A 41

W drives

68 Pin SCSI I/O

Connector

J1

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

Pin 1

+5V

Ground

J1-Auxiliary

Pin 1A

4P 3P2P 1P

(default)

For ID selection use
jumpers as shown or
connect a cable for
remote switching as
shown below.

J1-DC Power

Drive

HDA
Rear

PCB

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

not used

Host Alternate
Usage Plug

+5V

+5V

Dashed area is optional host circuitry (external to the
drive) connected to host supplied optional usage plug.

N.C.

Ground

Drive Activity LED

A

3A2A1

1197531

12 10 8 6 4 2

A

0

A0A1A2A

Pins 1, 3, 5, and 7 are
optional connections to
switching circuits in host
equipment to establish
drive ID.

3

Remote Switches

Pins 2, 4, 6, and 8 are normally
not grounded. They are driven low
(ground) for 250 ms after a Reset or
PWR ON to allow drive to read
SCSI ID selected. Pin 8 may
also be used to drive the cathode
of an external Activity LED.

Figure 12. Usi ng J1-Auxillary connector for model “W”

drive al ternate ID select and LED
connecti on

42 Hawk 4XL Instal lation Guide , Rev. A

W drives

Terminat ing the d r i v e

“W” model 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

“TE”

from pins 15 and 16 of connector J2. If you
install the drive on the end of the SCSI bus, enable termination
by installing a jumper on pins 15 and 16 of connector J2 (see
Figure 13).

Note.

Use active (ANSI SCSI-2 Alternative 2) terminat ors when
terminating the bus.

Pin 1

J2

T

DSMEWPP

E

*Enable SCSI terminator (default)
*Disable SCSI terminator

*“W” model only

R
ESTPT

D

P

J6

Drive
Front

J2 Jumper Type

(enlarged to
show detail)

Figure 13. Terminat ing the drive

J2

SCSI I/O

Connector

DC Power
Connector

J1

Hawk 4XL Instal lation Guide, Rev. A 43

W drives

Term in at or power

There are three possible terminator power (

TP

) configurations
for “W” model drives (see Figure 14). You will not normally need
to change this option and can leave the drive configured as it
was shipped from the factory.

Pin 1

J2

TEDSMEWPP

“W” model drives
Term. Power from Drive (default)

Term. Power to SCSI Bus
Term. Power from SCSI Bus

Position A

R
ESTPT

D

P

J2

J6

Drive
Front

J2 Jumper Type

(enlarged to
show detail)

SCSI I/O

Connector

DC Power
Connector

Figure 14. Setting terminator po wer jum pers

J1

44 Hawk 4XL Instal lation Guide , Rev. A

W drives

Other applicable jumper options

Oth er op ti on ju m p e rs ar e available as illu s tr at e d b el ow.

Drive with

HDA up, PCB

down, viewed

from front

Reserved

HDA

L

R

E

E

D

S

Reserved
Remote

11

LED

12

Shipped with cover installed.

Do not remove.

Do not install jumpers

on these four positions.

Drive Front

3

A2A

J6

Pin 1

A1A

0

Pin 1

End

J6

CATH

J6

Jumper Type

(enlarged to
show detail)

J2

Reserved
Delay Motor Start option

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

Disable the Delay Motor
Start option.

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.

Pin 1

(default)

(default)

J2

DC Power
Connector

J1

SCSI I/O

Connector

J2 Jumper Type

(enlarged to
show detail)

Figure 15. Additional jumper options

Pin 1

Write Protect option
Write protect = Off

(enables writing.
Write protect = On

(disables writing).
Parity Check option

Enable parity check of
SCSI bus.

Disable parity check.

(default)

(default)

Seagate Technology, Inc.
920 Disc Drive, Scotts Valley, CA 95066-4544, USA

Publication Number: 77767507, Rev. A, Printed in USA