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BARRACUDA 9
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Disc Drive
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ST19171N/W/WD /WC/DC
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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
European Union Compliance.......................................................8
Technical support services..........................................................9
General description....................................................................11
Initial setup information............................ ..................................16
Kühlung des Systems................................................................21
Installation des Laufwerkes
und Anschluß der Kabel..........................................................23
N drives section.........................................................................28
W/WD drives section .................................................................32
WC/DC drives section................................................................ 37
©1995 Seagate Technology, Inc. All rights reserved
Publication Number: 83329020, Rev. A
February 1996
Seagate®, Seagate Technology®, and the Seagate logo are registered trademarks of Seagate Technology, Inc. Barracuda™,
SeaFAX™, SeaFONE™, SeaTDD™, and SeaBOARD™ are
trademarks of Seagate Technology, Inc.
Apple and Macintosh are registered trademarks of Apple Computer, Inc. Other product names are registered trademarks or
trademarks of their owners.
No part of this publication may be reproduced in any form without
written permission from Seagate Technology, Inc.
Barracuda 9 Installation Guide, Rev. A 1
Preface
This manual contains information for users of the Seagate®
ST19171 Barracuda™ 9 SCSI disc drives. It provides support
services, performance specifications, and initial setup information. Additional information is available in the
uct Manual
sales representative if you need to order this publication.
(part number 83329030). Contact your Seagate
Electrostatic disch arge protecti on
Caution. Removal of circuit boards by personnel not perform-
ing 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 circuitry. Although some devices such as metal-oxide
semiconductors are extremely sensitive, all semiconductors, as
well as some resistors and capacitors, may be damaged or
degraded by exposure to static electricity.
Electrostatic damage to electronic devices 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 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.
Barracuda 9 Prod-
2 Barracuda 9 Installation Guide, Rev. A
• Turn off the power before removing or installin g the DC power
cable.
• Do not remove any circuit boards from the drive.
• Never use an ohmmeter on any circuit boards.
• When installing th e drive on a carrier or t ray, discharge the
carrier or tray prior to inserting it into the system.
Important safety inform ati on and precau tion s
Caution. Use forced-air ventilation when bench-testing the
drive to ensure proper cooling of drive components.
Use proper safety and repair techniques for safe, reliable opera-
tion of this unit. Service should be done only by qualified persons. We recommend the procedures in this manual as effective
ways of servicing the unit. Some procedures require the use of
special tools. For proper maintenance and safety, you must use
these tools as recommended.
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, possibly making it unsafe for use.
These warnings and cautions are not exhaustive. We cannot
possibly know, evaluate, and advise you of all the ways in which
maintenance might be performed or the possible risk of each
technique. Consequently, we have not completed any such
broad evaluation. If you use a non-approved procedure or tool,
first ensure that the method you choose will not risk either your
safety or unit performance.
Barracuda 9 Installation Guide, Rev. A 3
Always observe the following warnings and precautions:
• Perform all maintenance by following the procedures in this
manual.
• Follow all cautions and warnings in the procedures.
• Use sound safety practices when operating or repairing the
unit.
• Use caution when troubleshooting a unit that has voltages
present. Turn off power to the unit before servicing it.
• Wear safety shoes when removing or replacing heavy parts.
• Ensure that the internal temperature of the rack or cabinet
does not exceed the limits defined for the drive w hen the drive
is mounted in an equipment rack or cabinet. When units are
stacked vertically, pay special attention to the top where temperatures are usually highest.
• Follow the precautions listed above in “Electrostatic discharge
protection.”
• Do not remove any circuit boards from the drive chassis.
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 chassis. Return the entire drive for depot repair if the
HDA is defective.
• Do not attempt to disassemble the HDA. It is n ot field repair-
able. If the sealed HDA is opened by personnel not performing
depot repair, this will damage components and void the
warranty.
4 Barracuda 9 Installation Guide, Rev. A
As a component, this drive is d esigned to be installe d and op er-
ated 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 certi fy component
assemblies, such as the Barracuda disc drive, based on their
final acceptability in the end-use product. The subsystem
designers are responsible for meeting these conditions of
accepta b il ity in obtaining safety-regulatory agency compliance in
their end-use products and for certifying where requir ed by law.
A necessary part of meeting safety requirements is the provision
for overcurrent protection on drive SELV supply voltages.
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 Department to assist the subsystem
designer.
Wichtige Sicherheitshinweise
Vorsicht. Beim Testen des Laufwerks auf dem Prüftisch ist
Fremdbelüftung vorzusehen, um eine ausreichende Kühlung der
Laufwerkkomponenten sicherzustellen.
Verwenden Sie geeignete Sicherheits- und Reparaturverfahren,
um den sicheren, zuverlässigen Betrieb dieser Einheit zu
gewährleisten. Reparaturen dürfen nur von qualifiziertem Fachpersonal vorgenommen werden. Wir empfehlen die Verfahren in
diesem Handbuch als effektive Methoden zur Wartung und Rep-
Barracuda 9 Installation Guide, Rev. A 5
aratur der Einheit. Einige Verfahren erfordern Spezial-
werkzeuge; diese müssen zur sachgemäßen Ausführung der
Wartungsarbeiten und aus Sicherheitsgründen den Empfehlungen entsprechend verwendet werden.
Die Verfahren in diesem Handbuch und die Aufkleber auf de m
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
eventuellen 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 gewählte Verfahren weder Ihre
persönliche Sicherheit noch die Leistung der Einheit gefährdet.
Beachten Sie in jedem Fall die folgenden Warn-und Vorsichtshinweise:
• Führen Sie alle Wartungsarbeiten entsprechend den
Anweisungen in diesem Handbuch aus.
• Beachten Sie alle Warn- und Vorsichtshinweise in diesem
Handbuch.
• Treffen Sie beim Betrieb oder bei der Reparatur der Einheit
angemessene Sicherheitsvorkehrungen.
6 Barracuda 9 Installation Guide, Rev. A
• Wenn eine Einheit unter Spannung steht, gehen Sie bei der
Fehlerdiagnose besonders vorsichtig vor. Schalten Sie die
Einheit aus, bevor Sie mit den Reparaturarbeiten beginnen.
• Tragen Sie Sicherheitsschuhe, wenn Sie schwere Teile aus-
bzw. einbauen.
• 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 Sicherheitsmaßnahmen.
• Nehmen Sie keine Platinen aus dem Laufwerkgehäuse. Wenn
eine Platine defekt ist, muß das gesamte Laufwerk zur Reparatur eingeschickt werden. Die Herausnahme von Platinen
durch andere Personen als die für die wer kseitige Reparatur
zuständigen kann zu einer Beschädigung der Komponenten
und Erlöschen des Garantieanspruchs führen.
• 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 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.
Barracuda 9 Installation Guide, Rev. A 7
Als Teilkomponente ist dieses Laufwerk für die Inst allation un d
den Betrieb in Übereinstimmung mit UL 1950, EN60950, CSA
C22.2 950-M89 und VDE0805 vorgesehen.
Seagate ist ständig b emüht, die Zulassungsf ähigkeit von
Seagate -Produk ten im Rah men der ge genw ärtig gelten den
Standards zu gewährleisten. Zu den typischen Anwendungen
dieser Festplattenwerke zählen Systemeinbau durch den
Kunden un d die Ko nstruk tion von Unt ersystemen. Sicherheitsbehörden gewähren eine bedingte Zulassung für Komponenten
wie das Barracuda-Festplat tenlaufwerk v orbehaltlich d er
endgültigen Zulasssung im Endprodukt. Designer von Untersystemen sind dafür verantwortlich, die Voraussetzungen für die
Einhaltun g sicher heits- od er aufsicht sbehör dlicher Vorschri ften
in ihren Endprodukten und - falls gesetzlich vorgeschrieben - für
die Zulassun g zu scha ffen. E ine Gr undvora uss etzung zur Ei nhaltung der Sicherhei tsanforde rungen ist d ie Bereitst ellung
eines Überlast schutzes f ür die SELV-Ve rsorgungsspann ungen
des Laufwerks.
Dieses Gerät ist ei ne Baugruppe und unt erliegt als solche nicht
den Anforderungen der FCC oder ähnlicher nationaler Behörden
für eigenstä ndige G eräte. T echnische Te sterge bnisse z u elektromagnetische Strahlung sind für Designer von Unt ersystemen
auf Anfrage von der Seagate-Sicherheitsabteilung erhältlich.
8 Barracuda 9 Installation Guide, Rev. A
European Uni on Compl i ance
If this model has the CE Marking, it complies with the European
Union requirements of the Electromagnetic Compatibility Di rective 89/336/EEC of 03 May 1989 as amended by Directive 92/
31/EEC of 28 April 1992 and Directive 93/68/EEC of 22 July
1993.
Seagate uses an independent laboratory to confirm c ompliance
to the above directives. The drive was tested in a representative
system for typical applications. The sele cted system represents
the most popular characteristics for test platforms. The system
configurations include:
• 486, Pentium, and PowerPC Microprocessors
• 3.5-inch Floppy Disc Drive
• Keyboard
• Monitor/Display
Although the test system with this Seagate model complies to
the directives, we cannot guarantee that all systems will comply.
The computer manufacturer or system integrator shall confirm
EMC compliance and provide CE Marking for their product.
Barracuda 9 Installation Guide, Rev. A 9
Technical support services
Seagate Technology provides technical support literature and
diagnostic utilities to authorized distributors. Please contact your
dealer for technical support and installation troubleshooting.
Product technical support is available for all Seagate products by
calling the SeaFAX™, SeaFONE™, SeaTDD™, or SeaBOARD™ services. These are toll calls if you dial from outside
of the number’s local dialing area. Seagate also has a forum on
CompuServe and an internet web site.
SeaFAX: USA (408) 438-2620; Englan d 44-62-847-7080
Use a touch-tone telephone to access Seagate’s automated
FAX system and select technical support information by return
FAX. This service is available 24 hours a day, 7 days a week.
CompuSe rve foru m
Online support for Seagate products is available on CompuServe. This includes an extensive question and answer message base, downloadable utilities, and documentation files in
TM
Adobe
from your own computer. Type “Go Seagate” to access this
service.
SeaFONE: (408) 438-8222
Technical support specialists are available from 8:00 A.M. to
5:00
information on selected Seagate products is provided while you
are on hold. Recordings are accessible 24 hours a day, 7 days a
week.
AcrobatTM format which you can download and view
P.M. PST, Monday through Friday. Recorded technical
10 Barracuda 9 Installation Guide, Rev. A
SeaTDD: (408) 438 -5382
TDD is a telecommunication device for the deaf where two people can communicate using a keyboard connected to the phone
line. A TDD device is required to access this service, which is
available from 8:00
Friday.
A.M. to 5:00 P.M. PST, Monday through
SeaBOARD
The Seagate Technical Support Bulletin Board System (BBS) is
available 24 hours a day, 7 days a week. A modem is required to
access this service. The communications software must be set
for eight data bits, no parity, and one stop bit (8N1). These operate at 300 to 9600 baud. With this service you can access:
• Specifications and jumper configurations
• Reprints of documentation
• Utilities that you can download to your own computer
SeaBOARD Locatio n Modem num ber
USA, Mexico, Latin America........................(408) 438-8771
England.......................................................44-62-847-8011
Germany......................................................49-89-140-9331
Singapore.................................................... 65-292-6973
Australia ......................................................61-2-756-2359
Canada........................................................(416) 856-5581
France ...... ...................................................33-1-40-67-1034
Korea...........................................................82-2-556-7294
Internet web site: www.sea gate. com
Support services, product information, and much more is provided on this web site.
Barracuda 9 Installation Guide, Rev. A 11
General description
Barracuda 9 SCSI disc drives are high-speed, random-access
digital-data storage devices.
The drive i s a componen t for installation in an enclos ure
designed for the drive. This is often a rack within the system or
an external enclosure designed to hous e one or more disc drives
or other peripheral units. In either case, the disc drive must
receive adequate cooling (refer to “Providing ad equate cooling” )
and it must be sufficiently grounded and shielded from emissions. The
83329030) contains guidelines for a properly designed
enclosure.
Connector
Barracuda 9 Product Manual
Pin 1
Pin 1
J1
SCSI I/O
(part number
DC Power
Connector
J2
Figure 1. Barracuda 9 disc drive
(N model shown)
J6
12 Barracuda 9 Installation Guide, Rev. A
Characteristics ST19171
Interface UltraSCSI
1
Capacity
Unformatted 11.7 Gbytes
Formatted
2
9.1 Gbytes
Recording
Cylinders (user) 5,273
Read/write data heads 20
Servo heads Embedded
Seek time
3
Average read 9.0 msec
Average write 10.5 msec
Disc rotation
RPM 7,200
Average latency 4.17 msec
Internal transfer rate 80 to 124
(Mbits/sec, variable with zone)
Max sync. SCSI transfer rate
N 20 Mbytes/sec
W/WD/WC/DC 40 Mbytes/sec
Multi-segmented cache 512 Kbytes
2,048 Kbytes (optional)
1
Can also be operated according to SCSI-1 and SCSI-2 proto-
cols.
2
Standard factory units are f ormatted as follows:
512 data bytes per sector
9 spare sectors per cylinder
1 cylinder at the inner track reserved for spares
3
Not including on-board controller overhead.
Barracuda 9 Installation Guide, Rev. A 13
DC power requirements
Single-ended Differential
Voltage regulation
11
5
± 5%
+5V
+12V
± 5%
2
+5V
± 5%
11
+12V
2
± 5%
Amps
1
Maximum operating current
Maximum starting current
Peak DC
Peak AC
3, 6
3
Delayed motor start (max)
Peak operating current
Typical DC
Maximum DC
1
1
Maximum (peak)
Track following (DC)
Read track
at OD
1
at ID
OD DC
1
1
AC
Seeking
Typical DC
Maximum DC
1, 13
1
Maximum (peak) AC
1
Measured with an average reading DC ammeter. Instanta-
1.02 0.83 TBD TBD
0.98–2.2
3.1
1, 4
1.04 0.05 TBD TBD
0.97
1.02
1.09
0.94
0.92
1.05
1.14
0.97
1.00
1.03
0.8
0.83
1.8
0.74
0.76
0.79
1.0
0.92
1.04
1.8
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
neous +12V current peaks will exceed these values.
14 Barracuda 9 Installation Guide, Rev. A
2
A –10% tolerance is permissible during initial start of the spindle but must return to ±5% before reaching 7,200 RPM. The
±5% must be maintained after the drive signifies that its
power-up sequence has been completed and that the drive is
able to accept selection by the host initiator.
3
See the +12V current profile in the
ual
(publication number 83329030).
4
This condition occurs when the Motor Start option is enabled
Barracuda 9 Product Man-
and the drive has not yet received a Start Motor command.
5
See “Conducted noise immunity” in the
Manual.
The specified voltage tolerance is inclusive of ripple,
Barracuda 9 Product
noise, and transient response.
6
At power-up, the motor current regulator limits the +12V current to an average value of less than 1.4A, although instantaneous peaks may exceed this value. These peaks should
measure 5 msec duration or less.
7
Minimum current loading for each supply voltage is not less
than 4% of the maximum operating current shown.
8
Use separate ground returns for +5V and +12V supplies.
9
Where power is pr ovided to multiple dri ves from a common
supply, carefully consider individual-drive power requirements.
Where multiple units are powered on simult aneously, be sure
the peak starting current is available to each device.
10
Operating condition is a thir d-str oke seek at OD and read one
Track. A command is issued every 0.075 seconds (every
0.063 seconds on wide and SCA drives).
Barracuda 9 Installation Guide, Rev. A 15
11
No terminator power. See 11.7.3.4 in the
Barracuda 9 Product
Manual.
12
All power-saving features are enabled; ASA II code only.
13
Seeking is defined as a third-stroke seek at OD. The command is issued every 20 msec.
14
Read track is defined as repeat reads of track 15 with a duty
cycle of: 78% for N drives, 32% for W drives, 48% for WC
drives, 44% for WD drives, and 44% for DC drives.
16 Barracuda 9 Installation Guide, Rev. A
Initial setup information
The general information beginning on this page applies to all of
the Barracuda 9 drive models. After reading the general information topics, refer to t he appropriate drive-specific section listed
below for additional information about configur ing and installing
your particular model.
Drive models Page
ST19171N 28
ST19171W ST19171WD 32
ST19171WC ST19171DC 37
General informa tion
The following general information topics are discussed:
• 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 the drive
*This mounting procedure does not apply to WC or DC model
drives. To mount a WC or DC drive, plug the drive into the system’s single connector attachment (SCA) position on the system’s back panel.
Barracuda 9 Installation Guide, Rev. A 17
SCSI ID jumpers
Each device on the SCSI chain must h ave a unique SCSI ID.
The host system’s SCSI controller usually uses the highest-numbered ID available; therefore the lower-numbered SCSI IDs are
normally used for other SCSI devices such as this Barracuda
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 controll ers 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
installati on.
Most Barracuda disc drives are factory set with the SCSI ID set
at 0. To change the SCSI ID, refer to t he appropriate drive section for your model.
If, after completing the install ation process, the dr ive’s LED does
not show on/off activity when the host is trying to comm unicate
with the drive, a duplicate SCSI ID may be the problem. If this is
the case, change the ID so that each d evice 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 recommendations.
Drive terminati on
If you are installing a Barracuda 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.
18 Barracuda 9 Installation Guide, Rev. A
Internal
SCSI device
Internal
SCSI device
Controller
External
SCSI device
External
SCSI device
External
SCSI
cable
Internal SCSI cable
Terminate
Internal
SCSI device
Internal
SCSI device
Controller
Internal SCSI cable
Terminate
The top example in Figure 2 shows an internal hard disc at one
end of the SCSI bus with the SCSI controller at th e 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 controllers treat
the internal and external chains as separate logical
buses. This means you may need to terminate bot h 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.
For information about how to terminate your drive, refer to the
appropriate drive-specific section.
Figure 2. SCSI bus termination
Barracuda 9 Installation Guide, Rev. A 19
Terminator power
You usually will not need to change this option and can normally
leave the drive configured as it was shipped from the factory. For
information about how to change the terminator power option on
your drive, refer to the appropriate drive-specific section.
I/O circuits and data path widths
• WD and DC models use differential I/O circuits. You cannot
mix these models with single-ended models (N, W, WC) on
the same SCSI bus. The circuits are incompatible with each
other.
• W, WD, and WC 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.
Providin g adequ ate cool ing
The enclosure design must ensure adequate cooling for the
drive. The maximum ambient temperature is 50°C.
The drive’s product manual (83329030) describes how to evaluate the air-flow design. The evaluation consists of e nsuring that
the case temperature of certain critical components remains
within acceptable limits during drive operation.
We recommend orienting the drive or directing the air flow in a
way that creates the l east 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
20 Barracuda 9 Installation Guide, Rev. A
traveled by air that is heated by the drive and by other nearby
heat sources.
Figure 3 shows two design approaches with one or more fans
used to generate air 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.
Barracuda 9 Installation Guide, Rev. A 21
Kühlung des S ystem s
Die Gehäusekonstruktion m uß eine ausr eichende Kühlung d es
Laufwerk es gewährl eisten . Die Umge bungste mperatur darf
maximal 50°C betragen.
Die Produkthandbuch Barracuda 9 (Dokument 83329030)
enthalten Anwei sungen zur Beur teilung der Luftst romkonstruktion. Die Beurteilu ng muß sicherst ellen, daß sich die Ge häusetemperatur bestimmter kritischer Komponenten bei
Laufwerkbetrieb innerhalb zugelassener Grenzen hält.
Wir empfehlen, das Laufwerk so zu orientieren oder den Luftstrom so zu lenke n, daß der gering ste 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 Minimum beschränkt.
Abbildung 3 zeigt zwei Konstruktionsmöglichkeiten, bei denen
ein oder mehrere Lüfter den Luftstrom erzeugen. Der Luftstromverlauf wird durch die Lüfter gesteuert, die entweder Luft einblasen oder abziehen. Generell kann der Luftstrom entweder von
vorne nach hinten oder von hinten nach vorne verlaufen.
22 Barracuda 9 Installation Guide, Rev. A
.
SEAGATE
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)
SEAGATE
Note. Air flows in the direction shown or
in reverse direction (side to side)
Hinweis. Luftstrom in der angezeigten Richtung oder in
umgekehrter Richtung (von Seite zu Seite)
Under unit
Unter der Einheit
Above unit
Über der Einheit
Under unit
Unter der Einheit
Figure 3. Suggested air flow
Abbildung 3. Empfohlener Luftstromver lauf
Barracuda 9 Installation Guide, Rev. A 23
Mounti ng the drive and co nne ctin g cable s
Do not touch the connector pins or any components on the control board without observing static-discharge precautions.
Always handle the drive by the frame only.
The drive may be mounted in any orientati on (horizontall y, 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 m m), measured
from the outer surface of the chassis. Tighten the screws
down evenly. Do not over-tighten or force the screw if it
does not seem to s crew in easily, because this means the
threads are not properly aligned. In this case, back the
screw out and try again.
Installatio n des Laufwer kes
und Anschluß der Kabel
Beachten Sie beim Handhaben und Anfassen der Anschlußstifte
und Komponenten die Vorsichtsmaßnahmen zur Verhinderung
statischer Aufladung. Fassen Sie das Laufwerk nur am Rahmen
an.
Das Laufwerk kann in beliebiger Orientierung (horizontal, vertikal oder schräg) installiert w erden; jedoch muß dafür gesorgt
werden, daß ein ausreichender Luftstrom zur Kühlung des Laufwerkes vorhanden ist.
24 Barracuda 9 Installation Guide, Rev. A
1. Befestigen Sie das Laufwerk mit vier 6-32-UNC-Schrauben
am Gehäuse des Host- Systems. Die beiden Se iten des
Laufwerkes sind mit jeweils zwei Befestigungslöchern
versehen, die Unterseite des Laufwerkes weist vier weitere
Befestigungslöcher auf.
Gemessen von der Außenfläch e des Gehäuses dürfen die
Schrauben maximal 3,81 mm in die Befestigungslöcher des
Gehüus es hinei nragen. D ie Sch rauben m üssen gleichmäßig, jedoch nicht zu fest, angezogen werden. Wenn sich
eine Schraube nicht ohne Widerstand einschrauben läßt,
sind die Gewinde ni cht korrekt aneinander ausger ichtet. 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 korrekt 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 care not to stretch or crimp this cable, and do not
block 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
Barracuda 9 Installation Guide, Rev. A 25
defined in IEC 950. Figure 4 provides the pin inf ormation 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 Laufw erkes an. Das Kabel d arf nicht gedehnt ode r
gedrückt werden und es darf den Luftstro m zur K ühlung des
Systems nicht behindern.
Das Laufwerk wird über einen 4-poligen, neben dem SCSIAnschluß befestigten Steckverbinder mit Gleichs trom versorgt. Der Ausgang eines Netzteils muß SELV (safety extra
low voltage) na ch IEC 950 entspr echen. Abbildung 4 zeigt
die Steckerbelegung für den Gleichstromanschluß. Zum
Anschluß des Gleichstromkabels an das Laufwerk das
Kabelende in den Gleichstromanschluß des Laufwerkes
stecken.
Pin
Pin
1
2
3
4
Power
+12V
+12V return
+ 5V return
+ 5V
Gleichstrom
1
+12 V
2
+12 V Rückleitung
3
+ 5 V Rückleitung
4
+ 5 V
4321
Figure 4. DC power connector
Abbildung 4. Gleichstromanschluß
26 Barracuda 9 Installation Guide, Rev. A
Note. Signal ground on the power control board (PCB) and the
head and disc assembly (HDA) are connected to gether 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 emissions.
If you do not want the system chassis to be connected to
the HDA/PCB ground, you must provide a nonconductive
(electrically isolating) method of mounting the drive in the
host system. This may increase radiated emissions and
is the system designer’s responsibility.
Hinweis :
Die Signalerde auf der Stromregelungskarte (PCB) und
der Kopf- und Festplatteneinheit (HDA) sind in diesem
Laufwerk miteinander verbunden und können nicht
getrennt werden. Das Gerät, in das Sie das Laufwerk
eingebaut haben, ist ohne elektrisch isolierende
Stoßdämpfer direkt an die 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 S ie das Laufwerk
auf nichtleitende Weise (galvanisch isoliert) im Host-Sys-
Barracuda 9 Installation Guide, Rev. A 27
tem einbauen. Die daraus u.U. resultierende verstärkte
elektromagnetische Strahlung fällt in den Zuständigkeitsbereich des Systemdesigners.
5. Replace the host system’s cover.
5. Setzen Sie das Gehäuseoberteil des Host-Systems wieder
auf.
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.
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 the disc drive. Barracuda 9 disc drives are 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.
Quick reference desktop system notes
Note. Refer to your system or utility manual for detailed instruc-
tions)
• DOS. Set the drive type in CMOS to “
hard drive installed
• Macintosh. Use a third-party drive utility (Apple’s HD Setup
utility only works with Apple firmware drives).
.” Use FDISK.exe and FORMAT.exe.
Zero,” “None,”
or “
No
28 Barracuda 9 Installation Guide, Rev. A
N drives
N/ND drives sectionSetting the SCSI ID jumpe rs
Use the J6 connector to set the SCSI ID (see Figure 5). To
change the SCSI ID, install jumpers on the appropriate pins as
shown in the illustration.
Drive
Front
Jumper Plug
(enlarged to
show detail)
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
Reserved
J6
L
R
R
E
E
E
A2A1A
D
S
S
Pin 1
0
Figure 5. Setting the SCSI ID
Barracuda 9 Installation Guide, Rev. A 29
N drives
Terminating the drive
ST19171N drives are terminated with permanently mounted IC
active terminators. If you install one of these drives and it is not
on the end of the SCSI bus, disable the terminators by removing
the jumper from pins 15 and 16 of connector J2 (see Figure 6). 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.
Pin 1
R
P
E
T
T
D
S
P
P
Enable SCSI terminator (default)
Disable SCSI terminator
J2
T
D
M
W
E
S
E
P
J6
Drive
Front
J2 Jumper Type
(enlarged to
show detail)
Figure 6. Terminating the drive
J2
SCSI I/O
Connector
DC Power
Connector
J1
30 Barracuda 9 Installation Guide, Rev. A
N drives
Terminator power
There are three possible terminator power configurations for
ST19171N drives (see Figure 7). You will not normally need to
change this option and can leave the drive configured as it was
shipped from the factory.
Pin 1
R
P
E
T
T
S
P
P
Term. Power from Drive (default)
Term. Power to SCSI Bus
Term. Power from SCSI Bus
J2
T
D
M
E
S
E
Position A
W
P
D
J2
SCSI I/O
Connector
DC Power
Connector
J2 Jumper Type
(enlarged to
show detail)
J6
Drive
Front
Figure 7. Setting terminator power jumpers
J1
Barracuda 9 Installation Guide, Rev. A 31
N drives
Other applicab le jump er opti on s
Several other jumper options are available as illustrated.
Drive with
HDA up, PCB
down, viewed
from front
Reserved
Remote
LED
Shipped with cover installed.
Do not remove.
Do not install jumpers
on these four positions.
Reserved
HDA
L
E
D
11
12
R
E
S
Drive Front
DC Power
Connector
SCSI I/O
Connector
J2 Jumper Type
(enlarged to
show detail)
R
E
S
J1
A2A1A
J6
J2
Pin 1
0
Pin 1
End
Pin 1
J6
CATH
J6
Jumper Type
(enlarged to
show detail)
Reserved
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.
J2
Pin 1
Figure 8. Additional jumper options
32 Barracuda 9 Installation Guide, Rev. A
W/WD drives
W/WD drives sectionSetting the SCSI ID jumpe rs
Use the J6 jumper block to set the SCSI ID (Figure 9). 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 Figure 10).
Drive
Front
Jumper Plug
(enlarged to
show detail)
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
Reserved
Figure 9. Setting the SCSI ID
L
R
E
E
D
S
J6
A2A3A1A
Pin 1
0
Barracuda 9 Installation Guide, Rev. A 33
W/WD drives
Drive HDA (rear view, PCB facing downward)
68 Pin
SCSI I/O Connector
J1 Auxiliary
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
Pin 1
Pin 12
A3A2A1A
J1 Auxiliary
Pin 1
DC Power
Connector
Pin 1 Pin 1
0
(default)
J1 Auxiliary
*Fault LED
*Vendor Unique
*Spindle Sync
*Activity LED
No Connection
Ground
+5V
Pins 2, 4, 6, and 8 are driven low
*
for 250 ms after PWR ON and reset
to allow jumper-selectable SCSI ID.
A3A2A1A
1P2P3P4P
PCB
0
Figure 10. Using the J1 auxiliary jumper block
34 Barracuda 9 Installation Guide, Rev. A
W/WD drives
Terminating the drive
ST19171W drives are terminated with permanently mounted IC
active terminators. If you install one of these drives and it is not
on the end of the SCSI bus, disable the terminators by removing
the jumper from pins 15 and 16 of connector J2. If you install the
drive on the end of the SCSI bus, enable t e rmination by installing
a jumper on pins 15 and 16 of connector J2 (see Figure 11).
Note. Use active (ANSI SCSI-2 Alternative 2) terminators when
terminating the bus.
ST19171WD drives do not have internal terminators or any other
way of adding internal termination to the drive. You must provide
external differential ter minati on to these drives w hen terminati on
is required.
Pin 1
R
P
E
T
T
D
S
P
P
*Enable SCSI terminator (default)
*Disable SCSI terminator
*ST19171W only
J2
T
D
M
W
E
S
E
P
J2
SCSI I/O
Connector
DC Power
Connector
J1
J2 Jumper Type
(enlarged to
show detail)
J6
Drive
Front
Figure 11. Terminating the drive ( ST19171W shown)
Barracuda 9 Installation Guide, Rev. A 35
W/WD drives
Terminator power
There are three possible terminator power configurations for
ST19171W drives (see Figure 12). You will not normally need to
change this option and can leave the drive configured as it was
shipped from the factory.
There are two possible terminator power configurations for
ST19171WD drives (see Figure 12).
J2
ST19171W
Term. Power from Drive (default)
Term. Power to SCSI Bus
Term. Power from SCSI Bus
ST19171WD
Term. Power to SCSI Bus (default)
Host adapter or other device provides
term. power to external terminator.
T
D
M
E
S
E
Position A
W
P
P
D
Pin 1
R
E
T
T
S
P
P
J2
SCSI I/O
Connector
DC Power
Connector
J2 Jumper Type
(enlarged to
show detail)
J6
Drive
Front
Figure 12. Setting terminator power jumpers
J1
36 Barracuda 9 Installation Guide, Rev. A
W/WD drives
Other applicab le jump er opti on s
Other option jumpers are available as illu strated below.
Drive with
HDA up, PCB
down, viewed
from front
Reserved
Reserved
Remote
LED
Shipped with cover installed.
Do not remove.
Do not install jumpers
on these four positions.
Drive Front
DC Power
Connector
SCSI I/O
Connector
Pin 1
HDA
L
R
R
E
E
E
A2A1A
D
S
S
11
12
J6
J2
J1
J2 Jumper Type
(enlarged to
show detail)
J6
0
CATH
Jumper Type
(enlarged to
show detail)
Pin 1
End
Pin 1
Reserved
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
J6
(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.
Figure 13. Additional jumper options
J2
Pin 1
Barracuda 9 Installation Guide, Rev. A 37
WC/DC drives
WC/DC drive s sectio nSetting the SCSI ID jumpe rs
The SCSI ID for WC and DC drives is normally set over the SCSI
bus by the host system using connector contacts 39 (ID0), 40
(ID2), 79 (ID1), and 80 (ID3).
Terminating the drive
ST19171WC and ST19171DC 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.
38 Barracuda 9 Installation Guide, Rev. A
WC/DC drives
Applica ble jump er op tio ns
Option jumpers are available as i llustrated below.
J2
T
D
M
Delay Motor Start option
The host system has complete
control over motor start functions. Do
not install a jumper on these pins.
W
E
S
E
P
Enable Motor Start option
The host system has complete
control over motor start functions. Do
not install a jumper on these pins.
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
R
P
E
T
T
D
S
P
P
Drive
J2 Jumper Type
(enlarged to
show detail)
Front
Figure 14. Jumper options
J6
J2
SCSI I/O
Connector
DC Power
Connector
J1
Seagate Techno logy, Inc .
920 Disc Drive, Scotts Valley, CA 95066-4544, USA
Publication Number: 83329020, Rev. A, Printed in USA
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