IBM 8835 Hardware Maintenance Manual - Page 44

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Working with a hard disk drive This section describes the types of hard disk drives that the server supports and other information that you must consider when installing a hard disk drive, as well as how to install a hard disk drive in the server. Before you install a hard disk drive, review the following information: v The server supports two 25.4-mm (1-inch), slim, 3.5-inch hard disk drives. SCSI models of the server come with a hot-swap SCSI backplane. v The SCSI server models support low voltage differential (LVD) hot-swap drives. Each hot-swap drive is in a tray, which has a green activity LED and an amber status LED in the upper-right corner. These LEDs are lit if the drive is active and, in some cases, if the drive fails. Each hot-swap drive has a single-connectorattached (SCA) connector, which is connected directly into the hot-swap SCSI backplane. The backplane attaches to connector J12 on the system board and controls the SCSI IDs for the hot-swap drives. Note: The drive in bay 1 is assigned SCSI ID 0; the drive in bay 2 is assigned SCSI ID 1. v A non-hot-swap hard disk drive does not require a backplane or tray and it does not have indicator LEDs. However, you must attach the blue rails that come with the drive before installing it in the server. v A non-hot-swap hard disk drive has a jumper block on the rear. Install a jumper in the cable-selection position of the jumper block. For details, see the notes under step 4 on page 36, and the documentation that comes with the drive. v If you install only one hard disk drive, for faster startup, install it in the primary startup device bay. For hot-swap SCSI drives, the drive in bay 1 is the primary startup device. For IDE drives, the drive in bay 2 is the primary startup device. v If you are installing a hot-swap drive, continue with "Installing a hot-swap hard disk drive" on page 35. If you are installing a non-hot-swap drive, go to "Installing a non-hot-swap hard disk drive" on page 36. 34 325 Type 8835: Hardware Maintenance Manual and Troubleshooting Guide Eserver

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Working
with
a
hard
disk
drive
This
section
describes
the
types
of
hard
disk
drives
that
the
server
supports
and
other
information
that
you
must
consider
when
installing
a
hard
disk
drive,
as
well
as
how
to
install
a
hard
disk
drive
in
the
server.
Before
you
install
a
hard
disk
drive,
review
the
following
information:
v
The
server
supports
two
25.4-mm
(1-inch),
slim,
3.5-inch
hard
disk
drives.
SCSI
models
of
the
server
come
with
a
hot-swap
SCSI
backplane.
v
The
SCSI
server
models
support
low
voltage
differential
(LVD)
hot-swap
drives.
Each
hot-swap
drive
is
in
a
tray,
which
has
a
green
activity
LED
and
an
amber
status
LED
in
the
upper-right
corner.
These
LEDs
are
lit
if
the
drive
is
active
and,
in
some
cases,
if
the
drive
fails.
Each
hot-swap
drive
has
a
single-connector-
attached
(SCA)
connector,
which
is
connected
directly
into
the
hot-swap
SCSI
backplane.
The
backplane
attaches
to
connector
J12
on
the
system
board
and
controls
the
SCSI
IDs
for
the
hot-swap
drives.
Note:
The
drive
in
bay
1
is
assigned
SCSI
ID
0;
the
drive
in
bay
2
is
assigned
SCSI
ID
1.
v
A
non-hot-swap
hard
disk
drive
does
not
require
a
backplane
or
tray
and
it
does
not
have
indicator
LEDs.
However,
you
must
attach
the
blue
rails
that
come
with
the
drive
before
installing
it
in
the
server.
v
A
non-hot-swap
hard
disk
drive
has
a
jumper
block
on
the
rear.
Install
a
jumper
in
the
cable-selection
position
of
the
jumper
block.
For
details,
see
the
notes
under
step
4
on
page
36,
and
the
documentation
that
comes
with
the
drive.
v
If
you
install
only
one
hard
disk
drive,
for
faster
startup,
install
it
in
the
primary
startup
device
bay.
For
hot-swap
SCSI
drives,
the
drive
in
bay
1
is
the
primary
startup
device.
For
IDE
drives,
the
drive
in
bay
2
is
the
primary
startup
device.
v
If
you
are
installing
a
hot-swap
drive,
continue
with
“Installing
a
hot-swap
hard
disk
drive”
on
page
35.
If
you
are
installing
a
non-hot-swap
drive,
go
to
“Installing
a
non-hot-swap
hard
disk
drive”
on
page
36.
34
Eserver
325
Type
8835:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide