Page 1
••••••••••••••••••••••
Cheetah 9FC
••••••••••••••••••••••
Fibre Channel
••••••••••••••••••••••
Disc D rive
••••••••••••••••••••••
ST19101FC
••••••••••••••••••••••
Installation Guide
••••••••••••••••••••••
Page 2
Contents
Preface........................................................................................ 1
Electro static discharge protection ............................................... 1
Imp ortant safety informatio n and pre cautions.. ........................... 2
Wichtige Sicherheitshinweise...................................................... 4
Seagate technical support se rvices............................................. 8
General description.................... ....................................... ........ 13
Installing the Cheetah 9FC drive............................................... 15
Kühlung des Systems................................................................16
Troubleshooting......................................................................... 26
©1997 Seagate Technology, Inc. All rights reserved
Publicatio n Number: 83329200, Rev. A
June 1997
Seagate, Seagate Technology, and the Seagate logo are registered trademarks of Seagate Technology, Inc. Cheetah, 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 trademark s are the property of thei r respective owners.
No part of this p ublication may be reproduced in any form without
written permission from Seagate Technology, Inc.
Page 3
Cheetah 9FC Installation Guide, Rev. A 1
Preface
This manual contains informat ion for users of Seagate C heetah
9FC (Fibre Channel interface) disc drives. It provides technical
support information, performance specifications, installation
instructions, and a troubleshooting section. Additional informa-
tion is available in the Cheetah 9FC Product Manual (part num-
ber 83329210). Contact your Seagate sales representative if you
need to order this publication.
Electros tatic disch arge p rotecti 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 dam aging
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
Page 4
2 Cheetah 9FC Installation Guide, Rev. A
grounded to avoid potentially damaging static discharges.
• Do not remove any circuit boards from the drive.
• Never use an ohmmeter on any cir cuit boards.
• When installing the drive on a carrier or tray, discharge the
static elect ricity from the c arrier or tray prior to insert ing it into
the system.
Impo rtant 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 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 re ad and follow ed
to minimize or eliminate the risk of personal injury. The warnings
point out conditio ns 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.
Always observe the following warnings and pre cautions:
• Follow all cautions and warnings in the procedures.
• Use sound safety practices when operating, installing, or
removing the unit.
• Use caution when troubleshooting a unit that has voltages
present. Turn off power to the unit before removing i t.
• Ensure that the internal temperature of the rack or cabinet
does not exceed the limit s 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.
Page 5
Cheetah 9FC Installation Guide, Rev. A 3
• Follow the precautions listed above in “Electr ostatic discharge
prote ction.”
• 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. Return the entire drive for depot repair if the HDA is
defective.
• Do not attempt to disassemble the HDA. It is n ot field repairable. If the sealed HDA is opened by personnel not performi ng
depot repair, this will damage components and void the warranty.
As a component, the drive is designed to be installed and operated in accordance with UL1950, EN60950, CSA C22.2 950M89, VDE0805 and IEC950.
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 de sign. Safety agencies conditionally certi fy 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 requir ements is the provision for overc urrent prot ection on drive SELV supply voltages.
Page 6
4 Cheetah 9FC Installation Guide, Rev. A
This unit is a component part and as such is not meant to comply
with FCC or similar national requirement s as a stand-alone unit.
Engineering radiated emissions test results are available
throu gh the Seagate Safety Department to assist the subsystem
designer.
Wichti ge S ich erh eitsh inwei s e
Vorsicht. Beim Testen des Laufwerks auf dem Prüftisch ist
Fremdbelüftung vorzusehen, um eine ausreichende Kühlung der
Laufwerkkomponenten sicherzustellen.
Verwenden Sie geeignete Sicherheits- um d en sicheren, zuverlässigen Betrieb dieser Einheit zu gewährlei sten.
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
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 no ch die Leistung der Einheit gefährdet.
Page 7
Cheetah 9FC Installation Guide, Rev. A 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 aus, bevor Sie mit den Installations-und Entfernungsarbeiten beginnen.
• Wenn das Laufwerk in einem Einbaugestell oder Gehäuse
montiert i st, sorgen Sie dafür, daß die Temperatur im In neren
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 führen.
• Die vormontierte Kopf- und Festplatteneinheit (HDA) nicht aus
dem Laufwerk nehmen! Falls die HDA beschä d igt ist, schicke n
Sie das gesamte Laufwerk zur Reparatur ein.
Page 8
6 Cheetah 9FC Installation Guide, Rev. A
• 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 Teilkomponente ist dieses Laufwerk für die Installation und
den Betrieb in Übereinstimmung mit UL 1950, EN60950, CSA
C22.2 950-M89 und VDE0805 vorgesehen.
Seagate i st st ändig bemüht, die Zulassungsfähigkeit von
Sea gate-Pro dukten im R ahmen d er gegenw ärtig gel tenden
Standards zu gewährleisten. Zu den typischen Anwendungen
dieser F estplattenwerke zählen Systemeinbau durch den
Kun den un d die Konst ruktio n von Untersystemen. Sicherheitsbehörden gewähren eine bedingt e Zulassung für Komponenten
wie das Cheet ah-Festplattenlauf werk vor b ehaltlich der endgültigen Zulasssung im Endprodukt. Designer von Untersystemen
sind dafür verantwortlich, die Voraussetzungen f ür die Einhaltung sicherheits- oder aufsichtsbehördlicher Vor schriften in ihren
Endprodukten und - falls gesetzlich vorgeschrieben - für die
Zulassung zu schaffen. Eine Grundvoraussetzung zur E inhaltung der Sicherheitsanforderungen ist die Bereitstellung eines
Überlastschutzes für die SELV-Versorgungsspannungen des
Laufwerks.
Dieses G erät ist ei ne Baugr uppe und unterl iegt als solche ni cht
den Anforderungen der FCC oder ähnlicher nationaler Behörden
für eigenständige Geräte. Technische Testergebnisse zu elektromagnetische St rahl ung sind für Designer von Unt ersystem en
auf A nfrage von der Seagate-Sicherheitsabteilung erhältlich.
Page 9
Cheetah 9FC Installation Guide, Rev. A 7
Eur opean Uni on Com pli 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.
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 Australi a’s Spectrum Management Agency (SMA).
Seagate uses an independent laboratory to confirm compliance
to the above directives. The drive was tested in a representative
system for typical a pplications. The selected 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/D i spla y
• Mouse
• Printer
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 the appropriate marking for their
product.
Page 10
8 Cheetah 9FC Installation Guide, Rev. A
Seagate technical support services
If you need assistance installing your dr ive, consult your dealer.
Dealers are familiar with their unique system configurations and
can help you with system conflict s and other technical issues. If
you need additional assistance with your Seagate
other Seagate products, use one of the Seagate te chnical support services listed below.
SeaFONE® 1-800-SEAGATE
Seagate’s 800 number (1-8 00-732-4283) allows toll -free a ccess
to automated self-help services, providing answers to commonly
asked questions, troubleshooting tips, and specificat ions for disc
drives and tape drives. This service is available 24 hours daily
®
drive or
and requires a touch-to ne phone. International callers can reach
this automated self-help service by dialing 408-4 56-4496.
Online services
Using a modem, you can obtain tro ubleshooting tip s, 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 t he I nter net fr om Se ag ate ’s Wo rld W id e We b ho me pa ge
(http://www.seagate.com) or Seagate’s ftp server (ftp://
ftp.seagate.com). You can also send E-mail with your ques-
tion s to D iscS uppor t @ Se agate.c om or TapeSupport @
Seagate.com.
Page 11
Cheetah 9FC Installation Guide, Rev. A 9
Seagate CompuServe forum
Online technical support for Seagate products is available on
CompuServe. To access our technical support forum, type
seagate
. This forum provides information 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
Australia 61-2-9756-2359
England 44-1628-478011
France 33 1-48 25 35 95
Germany 49-89-140-9331
Singapore TBA
Taiwan 886-2-719-6075
Thailand 662-531-8111
USA Disc: 408-434-1080; Tape: 408-456-4415
Page 12
10 Cheetah 9FC Installation Gui de, Rev. A
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
England 44-1628-894084
USA 1-800-SEAGATE or 408-456-4496
Seagate te chnical support FA X
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
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
Singapore 65-488-7 528
Taiwan 886-2-715-2923
USA 408-944-9120
Page 13
Cheetah 9FC Installation Guide, Rev. A 11
Direct-su pp ort servi ces
Seagate te chnical support
For one-on-one help, you can talk to a technical support specialist during local business hours. Before c alling, note your system
configuration and drive model number (ST
Location Phone number
xxxx
).
Australia 61-2-9725-3366 (9:00 A.M. to 5:0 0 P.M. , M–F)
England 44-1628-894083 (10:00
2:00
P.M. to 5:00 P.M., M–F)
France 33 1-41 86 10 86 (9:30
2:00
P.M. to 5:00 P.M., M–F)
A.M. to 1:00 P.M.,
A.M. to 12:30 P.M.,
Germany Disc: 49-89-140-9332; Tape: 49-89-140-9333
(9:30
A.M. to 12:30 P.M., 2:00 P.M. to 4:00 P.M. ,
M–F)
Hong Kong 852-2368 9918
Korea 82-2-556-8241
Singapore 65-488-7584 (9:00
A.M. to 12:00 P.M., 2:00 P.M.
to 5:00
P.M., M–F)
Taiwan 886-2-514-2237
USA Please dial 1-800-SEAGATE or 408-456-4496
for the specific product telephone num ber.
(6:00
A.M. to 11:15 A.M., 12:30 P.M. to 5:00 P.M.,
Pacific time, M–F)
SeaTDD™ 408-944-9121
Using a telecommunications device for the deaf (TDD), you c an
send questions or comments 24 hours daily and exchange messages with a technical support specialist between 6:00
11:15
A.M. and 12:30 P.M. to 5:00 P.M. (Pacific time) Monday
A.M. to
through Friday.
Page 14
12 Cheetah 9FC Installation Gui de, Rev. A
Customer service centers
Seagate direct OEM, Distribution, and System Integrator customers should contact their Seagate service representative for
warranty information. Other customers 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 Afri ca 31-2 0 31-67300 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) 405-949-6706 405-949-6738
Manufacturer’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
Mexico
Abicom Seamax
SA DE CV 525-546-6965 525-546-48 88
Page 15
Cheetah 9FC Installation Guide, Rev. A 13
General description
Cheetah 9FC disc drives are high-speed, random-access digitaldata storage devices designed to be used within a host system
with a Fibre Channel-Arbitrated Loop peripheral interface.
The drive is a component for installation in an enclosure
designed for the drive. The disc drive must receive adequate
cooling (refer to “Providing adequate cooling”) and it must be
sufficiently grounded and shielded from emissions. The Cheetah
9FC Product Manual (part number 83329210) contains guidelines for a properly designed enclosure.
Figure 1: Cheetah 9FC disc drive
Page 16
14 Cheetah 9FC Installation Gui de, Rev. A
Characteristics
ST19101FC
Interface FC-AL
Capacity
Unformatted (Gbytes)
Formatted (Gbytes)
1
11.7
9.1
Recording
Cylinders (user)
Read/write data heads
Avg bytes/track
6,526
16
115,078
Seek time
Average read (msec)
Averag e write (msec)
8.2
9.7
Disc rotation
RPM
10,033
Average latency (msec)
2.9 9
Data transfer rate
Maxim um insta nt an eo us
100
(Mbytes/sec)
1. The specified formatted capacities are calculated with the stan-
dard OEM sector size (512 bytes per logical block) and sparing.
ST19101FC
DC power requirements(±5%)
Maxi mum start current
Maxi mum operati ng curren t
Average idle current
1. For more detailed power information, refer to the Cheetah 9FC Product
Manual, publication number 83329210.
1
+5 V +12 V
1.04A
1.13A
1.0A
3.19A
1.9A
1.5A
Page 17
Cheetah 9FC Installation Guide, Rev. A 15
Install ing the Cheetah 9FC drive
To install a Cheetah 9FC drive, simply plug the drive directly into
your system’s Fibre Channel backpanel 40-pin single connector
attachment (FC-SCA). There are no jumpers or terminators on
the drive, and power is supplied through the connector. Table
1 on page 24 lists the pin descriptions of the 40-pin FC-SCA.
Read the following general information topics to ensure your
driv e is installed properly:
• Providing adequate cooling
• Mounting the drive
• Formatting the drive
Pro vid ing adequ ate cool ing
The enclosure design must ensure adequate cooling for the
drive. The maximum ambient temperature is 50
rated MTBF). Refer to Figure 2 on page 17 for an illustration
showing suggested air flow patterns.
The drive’s product manual (83329210) describes how to evaluate the air-f low design. The evaluation consists of ensuring that
the case temperatures of certain critical components remain
within acceptable limits during drive operation.
We recommend orienti ng the drive or dire cting 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
o
C (3 0oC for t he
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.
Page 18
16 Cheetah 9FC Installation Gui de, Rev. A
Figure 2 shows one design approac h with one or more fans used
to generate air flow. The air-flow pattern can be created by the
fans either pu shing or drawing air. The overall flow pattern must
be directed from side to side in most FC-SCA systems.
Kühl un g des System s
Die Gehäusekonstruktion muß eine ausreichende Kühlung des
Laufwerkes gewährleisten. Die Umgebungstemperatur darf
maximal 50
Die Produkthandbuch Cheetah 9FC (Dokument 83329210)
enthalten Anweisungen zur Beurteilung der Luftstromkonstruktion. Die Beurteilung muß sicherstellen, daß sich die Gehäuse-
o
C betragen (30oC für der MTBF).
temperatur bestimmter kritischer Komponenten bei
Laufwerkbetrieb innerhalb zugelassener Grenzen hält.Wir
empfehlen, das Laufwerk so zu orientieren oder den Luftstrom
so zu lenken, daß der geringste Luftstromwiderstand vonvorne
nach hinten oder von hinten nach vorne verlaufen.
Page 19
Cheetah 9FC Installation Guide, Rev. A 17
Above unit
Note. Air flows in the direction shown (back to front)
or in reverse direction (front to back)
Above unit
Under unit
Note. Air flows in the direction shown or
in reverse direction (side to side)
Under unit
Figure 2: Suggested air flow
Abbildu ng 2. Empfohlener Luftstromverlauf
Page 20
18 Cheetah 9FC Installation Gui de, Rev. A
Mounti ng the drive
Do not touch the c onnector pins or any components on the control board without observing static-discharge precautions.
Alw ays handle the drive by the frame only.
You may mount the drive in any orientation (horizontally, vertically, or any combination thereof); however, you must ensure
that the drive receives adequate air flow for cooling.
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. See
Figure 3.
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 not over-tighten or force the screw if it does not seem
to screw in easily.
Install atio n des Laufwer kes
Beachten Sie beim Handhaben und Anfassen der Anschlußstifte
und Komponenten die Vorsichtsmaßnahmen zur Verhinderung
statischer Aufladung. Fassen Sie das Laufwerk nur am Ra hmen
an.
Das Laufwerk kann in beliebiger Orientierung (horizontal, vertikal oder schräg) installiert werden; jedoch muß dafür gesorgt
werden, daß ein ausreichender Luftstrom z ur Kühlung des Laufwerkes vorhanden ist.
Befestigen Sie das Laufwerk mit vier 6-32-UNC-Schrauben am
Gehäuse des Host-Systems. Die beiden Seiten des Laufwerkes
sind mit jeweils zwei Befestigungslöcher versehen, die
Page 21
Cheetah 9FC Installation Guide, Rev. A 19
Unterseite des Laufwerkes weist vier weitere Befestigungslöcher
auf. Siehe Abbiludung 3.
Gemessen von der Außenfläche des Gehäuses dürfen die
Schrauben maximal 3,81 mm in die Befestigungslöcher des
Gehüuses hineinragen. Die Schrauben müssen gleichmäßig,
jedoch nicht zu fest, angezogen werden. Wenn sich eine
Schraube nicht ohne Widerstand einschrauben läßt, sind die
Gewinde nicht korrekt a neinander ausgerichtet.
Page 22
20 Cheetah 9FC Installation Gui de, Rev. A
N
P
A
[1]
[3]
R
F
D
G
.01
Notes:
Mounting holes three on each side, 6-32 UNC.
[1]
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).
Mounting holes four on bottom, 6-32 UNC.
[2]
Max screw length into bottom of drive 0.15 in.
B
[5]
(3.81 mm). Screw tightening torque 6.0 in-lb
(.675 NM) max with minimum thread
engagement of 0.12 in. (3.05 mm).
Power and interface connections.
[3]
Decorative front panel.
[4]
Connector is centered on module ±0.020 in.
[5]
(.508 mm).
[2]
C
M
L
A
B
K
C
D
E
F
G
H
J
J
K
L
M
N
P
R
[4]
H
S
S
Figure 3: Dimensions
Abbildu ng 3: Laufwerkabmessungen
5.750
4.000
1.640
0.625
4.000
0.250
2.375
3.750
2.375
1.750
0.181
0.340
0.190
0.049
1.720
4.100
±
±
±
±
±
±
±
±
±
±
±
±
±
max
±
±
0.010
0.010
0.020
0.020
0.005
0.005
0.010
0.010
0.010
0.020
0.015
0.015
0.010
0.010
0.010
MillimetersInches
146.05
101.60
41.66
15.87
101.60
6.35
60.32
95.25
60.32
44.45
4.55
8.64
4.83
1.2446
43.69
104.14
±
.25
±
.25
±
.51
±
.50
±
.13
±
.13
±
.25
±
.25
±
.25
±
.50
±
.38
±
.38
±
.25
max
±
.25
±
.25
Page 23
Cheetah 9FC Installation Guide, Rev. A 21
Inse rtin g the drive
Most systems pro vide a way to in sert the drive usin g a carrier or
tray which allows the drive to be hot-plugged into the system’s
Fibre Channel 40-pin single connector attachment (FC-SCA).
Refer to your system documentation about the method they provide and follow their instructions.
When in stalling the drive on a carrier or tray, discharge the static
electricit y f rom t h e carrier or tray prior t o inserting it into the system.
Formatting the drive
Warning. Formatting a drive erases all user data. Be sure that
you understand this principle before formatting a ny
hard disc driv e (it is not necessary to form at a dri ve
which has previously been used to store data
unless you intend to erase all user data).
Note. Seagate is not responsible for lost user data.
1. Supply DC power to the drive (power is supplied to the drive
throu gh the 40-pin FC-SCA).
2. Format the disc drive. This drive is designed to operate with
a variety of operating systems. Refer to your system and
Fibre Channel controller manual for information about
selecting and formatting the drive.
Page 24
22 Cheetah 9FC Installation Gui de, Rev. A
Enabl ing write cache
Write caching is a feature that allows the drive to transfer write
data to its own cache, tell the controller that the task is complete,
and then actually complete the write at a later time. This
improves write performance by freeing the CPU to go on to its
next command.
Warning. Information can be lost if you enable write cache
and there is a system failure (for example, power
failure) before the d ata has actually b een physically
written to the disc.
OEM driv es are shipped wi th write cache disabled by default to
enhance data integrity. If you want to enable the write cache,
refer to your system’s drive controller and software utility documentation. Seagate provides an ASPI utility that you can use in a
PC compatible system to enable the write cache. It is available
on Seagate’s CompuServe forum and on the Seagate BBS
(refer to “Seagate technical support services” on page 8).
Conn ectin g rem o te LE Ds
You can connect remote LEDs using J6 (s ee Figure 4).
Connect the anode (usually the longer LED connector) to the
+5V pin, and th e cathode to the appropriate LED output pin. For
example, if you w ant to at tach an LED which lights up when the
drive is active (reading or writing), connect the LED’s anode connector to J6 pin 11 and the cathode to J6 pin 12.
Page 25
Cheetah 9FC Installation Guide, Rev. A 23
Drive
Front
Pin 1
J6
Reserved
Port A Bypass LED [1]
Port B Bypass LED [1]
Fault LED [2]
Reserved
Active LED [2]
Reserved
+5V
Active LED [1]
Ground [3]
[1] The drive has a 2.2K ohm resistor in series with this
LED driver. Ti e the minus side of an external highefficiency LED (i.e., 2ma) to this pin. Connect the
plus side of the LED to +5V.
[2] An external current-limiting resistor is required when
connecting an LED to this pin. Connect the minus
side of the resistor/LED combination to this pin. Connect the plus side to +5V. This pin is connected in
parallel with the signal of the same name in the interface connector (J1).
[3] Jumper storage location (across pins 2 and 4).
Figure 4: LED indicator connector (J6)
Page 26
24 Cheetah 9FC Installation Gui de, Rev. A
Table 1: FC-SCA pin descr iptions
Pin/contact Signal name Signal type
1* –EN bypass port A TTL output
2* 12 Volts
3* 12 Volts
4* 12 Volts
5* –Parallel ESI TTl output
6* Ground (-DRV present)
7* Active LED out Open collector out
8* Reserved
9* Sta rt_1 TTL inpu t
10* Start _2 TTL in pu t
11* –EN bypass port B TTL output
12* SEL_6 TTL in pu t
13* SEL_5 TTL input
14* SEL_4 TTL in pu t
15* SEL_3 TTL input
16* Fau lt LED out Open collector out
17* Reserved NC
18* Reserved NC
19* 5 Volts
20* 5 Volts
21 12 Volts charge
22 Ground
23 Ground
24* +Port A_in Diff. PECL input pair
25* –Port A_in
Page 27
Cheetah 9FC Installation Guide, Rev. A 25
Pin/contact Signal name Signal type
26 Ground
27* +Port B_in Diff. PE CL input pair
28* –Port B_in
29 Ground
30* +Port A_out Diff. PECL output pair
31* –Port A_out
32 Ground
33 * +Port B _out Diff. PECL output pair
34* –Port B_out
35 Ground
36 SEL_2 TTL in pu t
37 SE L_1 TT L input
38 SEL_0 TTL in pu t
39 Reserved NC
40 5 Volts charge
Page 28
26 Cheetah 9FC Installation Gui de, Rev. A
Troubleshooting
Before calli ng Seagate Technical Support, please read the possibilities discussed below. The suggestions presented here will
re solve the majority of installation problems.
Gener al instal lati on troub les ho otin g
• Check system compatibility. This is a Fibre Channel-Arbi-
trated Loop (FC-AL) device. Check your system documentation to ensure that it supports FC -AL devices.
• Check the physical attachment. Ensure that the drive is
properly mated with the backpanel Fibre Channel single connector attachment (FC-SCA).
• Check to ensure that drive is receiving power. Insert the
drive into your system. Listen carefully for the sound of the
drive motor spinning up. If the drive motor does not spin up,
check the power supply. If your power supply is functioning
properly, but the drive d oes not spin up, contact the company
from which you purchased the drive.
• Check your system or backpanel documentation to
ensure you have set options in accordance with the manufacturer’s recommendations. All device options, including
addresses, are set at the backpanel within the host system or
through system software. Check your host system documentation about how to set these options in your particular system.
Page 29
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Seagate Technology, Inc.
920 Disc Drive, Scotts Valley, CA 95066-4544, USA
Publicatio n Number: 83329200, Rev. A, Printed in USA
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