IBM 88643RU Service Guide - Page 106

drive, problems, Intermittent

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Hard disk drive problems v Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved. v See Chapter 3, "Parts listing, Type 8864," on page 23 to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU). v If an action step is preceded by "(Trained service technician only)", that step must be performed only by a trained service technician. Symptom Action Not all drives are recognized by Remove the drive indicated on the diagnostic tests; then, run the hard disk drive the hard disk drive diagnostic diagnostic test again. If the remaining drives are recognized, replace the drive that test (the Fixed Disk test). you removed with a new one. The server stops responding during the hard disk drive diagnostic test. Remove the hard disk drive that was being tested when the server stopped responding, and run the diagnostic test again. If the hard disk drive diagnostic test runs successfully, replace the drive that you removed with a new one. A hard disk drive was not detected while the operating system was being started. Reseat all hard disk drives and cables; then, run the hard disk drive diagnostic tests again. Intermittent problems v Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved. v See Chapter 3, "Parts listing, Type 8864," on page 23 to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU). v If an action step is preceded by "(Trained service technician only)", that step must be performed only by a trained service technician. Symptom Action A problem occurs only occasionally and is difficult to diagnose. 1. Make sure that: v All cables and cords are connected securely to the rear of the server and attached devices. v When the server is turned on, air is flowing from the fan grille. If there is no airflow, the fan is not working. This can cause the server to overheat and shut down. 2. Check the system-error log or BMC log (see "Error logs" on page 70). 3. See "Solving undetermined problems" on page 156. 90 IBM System x3850 Type 8864: Problem Determination and Service Guide

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Hard
disk
drive
problems
v
Follow
the
suggested
actions
in
the
order
in
which
they
are
listed
in
the
Action
column
until
the
problem
is
solved.
v
See
Chapter
3,
“Parts
listing,
Type
8864,”
on
page
23
to
determine
which
components
are
customer
replaceable
units
(CRU)
and
which
components
are
field
replaceable
units
(FRU).
v
If
an
action
step
is
preceded
by
“(Trained
service
technician
only)”,
that
step
must
be
performed
only
by
a
trained
service
technician.
Symptom
Action
Not
all
drives
are
recognized
by
the
hard
disk
drive
diagnostic
test
(the
Fixed
Disk
test).
Remove
the
drive
indicated
on
the
diagnostic
tests;
then,
run
the
hard
disk
drive
diagnostic
test
again.
If
the
remaining
drives
are
recognized,
replace
the
drive
that
you
removed
with
a
new
one.
The
server
stops
responding
during
the
hard
disk
drive
diagnostic
test.
Remove
the
hard
disk
drive
that
was
being
tested
when
the
server
stopped
responding,
and
run
the
diagnostic
test
again.
If
the
hard
disk
drive
diagnostic
test
runs
successfully,
replace
the
drive
that
you
removed
with
a
new
one.
A
hard
disk
drive
was
not
detected
while
the
operating
system
was
being
started.
Reseat
all
hard
disk
drives
and
cables;
then,
run
the
hard
disk
drive
diagnostic
tests
again.
Intermittent
problems
v
Follow
the
suggested
actions
in
the
order
in
which
they
are
listed
in
the
Action
column
until
the
problem
is
solved.
v
See
Chapter
3,
“Parts
listing,
Type
8864,”
on
page
23
to
determine
which
components
are
customer
replaceable
units
(CRU)
and
which
components
are
field
replaceable
units
(FRU).
v
If
an
action
step
is
preceded
by
“(Trained
service
technician
only)”,
that
step
must
be
performed
only
by
a
trained
service
technician.
Symptom
Action
A
problem
occurs
only
occasionally
and
is
difficult
to
diagnose.
1.
Make
sure
that:
v
All
cables
and
cords
are
connected
securely
to
the
rear
of
the
server
and
attached
devices.
v
When
the
server
is
turned
on,
air
is
flowing
from
the
fan
grille.
If
there
is
no
airflow,
the
fan
is
not
working.
This
can
cause
the
server
to
overheat
and
shut
down.
2.
Check
the
system-error
log
or
BMC
log
(see
“Error
logs”
on
page
70).
3.
See
“Solving
undetermined
problems”
on
page
156.
90
IBM
System
x3850
Type
8864:
Problem
Determination
and
Service
Guide