IBM 8649 Hardware Maintenance Manual - Page 64

Power, signal, cables, internal, drives

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13. Connect the power cable to the back of the drive. The connectors are keyed and can be inserted only one way. 14. If you have other options to install or remove, do so now. 15. Replace the support bracket (see "Removing and installing the support bracket" on page 38). 16. Replace the bezel (see "Replacing the bezel" on page 66). 17. Replace the side cover (see "Replacing the bezel" on page 66). 18. Reconnect the external cables and power cords; then, turn on the attached devices and the server. Power and signal cables for internal drives Your server uses cables to connect IDE and SCSI devices to the power supply and to the system board. (See "System-board internal connectors" on page 91 for the location of system-board connectors.) Review the following information before connecting power and signal cables to internal drives: v The drives that are preinstalled in your server come with power and signal cables attached. If you replace any drives, remember which cable is attached to which drive. v When you install a drive, ensure that one of the drive connectors of the signal cable is connected to the drive and that the connector at the other end of the signal cable is connected to the system board. v The server has two IDE buses, primary and secondary. Each of these buses supports up to two IDE devices. The primary IDE bus uses connector IDE1 on the system board and the secondary IDE bus uses connector IDE2. v If you have only one IDE device on a cable, it must be set as a master device. v If two IDE devices are used on a single cable, one must be designated as the master device and the other as the subordinate device; otherwise, the server might not recognize some of the IDE devices. The master and subordinate designation is determined by switch or jumper settings on each IDE device. The following cables are provided: v Power cables: Four-wire power cables connect the drives to the power supply. At the end of these cables are plastic connectors that can be attached to different drives; these connectors vary in size. v Signal cables: Signal cables are typically flat cables, also called ribbon cables, that connect IDE, SCSI, and diskette drives to the system board. Two or three types of signal cable come with your server. - IDE: The wider IDE signal cable has three connectors. One of these connectors is attached to the drive, one is a spare, and the third is attached to the primary or secondary IDE connector on the system board. The spare connector can be used to connect an additional IDE drive to your server. The CD-ROM drive is attached to an ATA 100 signal cable. ATA 100 signal cables are color-coded. The blue connector is attached to the system board. The black connector is attached to the master IDE device. The gray middle connector is attached to the subordinate IDE device. - Diskette drive: The narrower signal cable has two connectors. One is attached to the diskette drive, and the other is attached to the connector (FDD1) on the system board. - SCSI: A round SCSI cable connects SCSI devices to the integrated SCSI controller with RAID capabilities on the system board. For hot-swap models, 54 IBM xSeries 225 Types 8649: Hardware Maintenance Manual and Troubleshooting Guide

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13.
Connect
the
power
cable
to
the
back
of
the
drive.
The
connectors
are
keyed
and
can
be
inserted
only
one
way.
14.
If
you
have
other
options
to
install
or
remove,
do
so
now.
15.
Replace
the
support
bracket
(see
“Removing
and
installing
the
support
bracket”
on
page
38).
16.
Replace
the
bezel
(see
“Replacing
the
bezel”
on
page
66).
17.
Replace
the
side
cover
(see
“Replacing
the
bezel”
on
page
66).
18.
Reconnect
the
external
cables
and
power
cords;
then,
turn
on
the
attached
devices
and
the
server.
Power
and
signal
cables
for
internal
drives
Your
server
uses
cables
to
connect
IDE
and
SCSI
devices
to
the
power
supply
and
to
the
system
board.
(See
“System-board
internal
connectors”
on
page
91
for
the
location
of
system-board
connectors.)
Review
the
following
information
before
connecting
power
and
signal
cables
to
internal
drives:
v
The
drives
that
are
preinstalled
in
your
server
come
with
power
and
signal
cables
attached.
If
you
replace
any
drives,
remember
which
cable
is
attached
to
which
drive.
v
When
you
install
a
drive,
ensure
that
one
of
the
drive
connectors
of
the
signal
cable
is
connected
to
the
drive
and
that
the
connector
at
the
other
end
of
the
signal
cable
is
connected
to
the
system
board.
v
The
server
has
two
IDE
buses,
primary
and
secondary.
Each
of
these
buses
supports
up
to
two
IDE
devices.
The
primary
IDE
bus
uses
connector
IDE1
on
the
system
board
and
the
secondary
IDE
bus
uses
connector
IDE2.
v
If
you
have
only
one
IDE
device
on
a
cable,
it
must
be
set
as
a
master
device.
v
If
two
IDE
devices
are
used
on
a
single
cable,
one
must
be
designated
as
the
master
device
and
the
other
as
the
subordinate
device;
otherwise,
the
server
might
not
recognize
some
of
the
IDE
devices.
The
master
and
subordinate
designation
is
determined
by
switch
or
jumper
settings
on
each
IDE
device.
The
following
cables
are
provided:
v
Power
cables:
Four-wire
power
cables
connect
the
drives
to
the
power
supply.
At
the
end
of
these
cables
are
plastic
connectors
that
can
be
attached
to
different
drives;
these
connectors
vary
in
size.
v
Signal
cables:
Signal
cables
are
typically
flat
cables,
also
called
ribbon
cables,
that
connect
IDE,
SCSI,
and
diskette
drives
to
the
system
board.
Two
or
three
types
of
signal
cable
come
with
your
server.
–
IDE:
The
wider
IDE
signal
cable
has
three
connectors.
One
of
these
connectors
is
attached
to
the
drive,
one
is
a
spare,
and
the
third
is
attached
to
the
primary
or
secondary
IDE
connector
on
the
system
board.
The
spare
connector
can
be
used
to
connect
an
additional
IDE
drive
to
your
server.
The
CD-ROM
drive
is
attached
to
an
ATA
100
signal
cable.
ATA
100
signal
cables
are
color-coded.
The
blue
connector
is
attached
to
the
system
board.
The
black
connector
is
attached
to
the
master
IDE
device.
The
gray
middle
connector
is
attached
to
the
subordinate
IDE
device.
–
Diskette
drive:
The
narrower
signal
cable
has
two
connectors.
One
is
attached
to
the
diskette
drive,
and
the
other
is
attached
to
the
connector
(FDD1)
on
the
system
board.
–
SCSI:
A
round
SCSI
cable
connects
SCSI
devices
to
the
integrated
SCSI
controller
with
RAID
capabilities
on
the
system
board.
For
hot-swap
models,
54
IBM
xSeries
225
Types
8649:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide