IBM BladeCenter T Type 8720 User Manual
Page 100
Table
6.
Troubleshooting
charts
Device
Suggested
action
Blade
server
problem
Blade
servers
turn
off
for
no
apparent
reason.
All
blade
bays
must
have
a
blade
server,
expansion
unit,
or
filler
blade
in
them.
Blade
bays
that
do
not
have
these
items
installed
or
have
them
installed
improperly
disturb
airflow
in
the
BladeCenter
T
unit
with
an
adverse
effect
on
BladeCenter
T
unit
cooling.
If
the
BladeCenter
T
unit
begins
to
overheat,
blade
server
processors
will
begin
to
slow
down
and
will
eventually
turn
off
the
system.
Blade
server
does
not
turn
on,
the
amber
system-error
LED
on
the
BladeCenter
T
system-LED
panel
is
lit,
the
amber
blade
error
LED
on
the
blade
server
LED
panel
is
lit,
and
the
system-error
log
contains
the
following
message:
″CRUs
MisMatched
″.
The
problem
occurs
after
installing
the
second
microprocessor
option
or
after
replacing
a
failed
microprocessor
in
a
two-way
Blade
server.
The
processor
with
the
lowest
feature
set
and
stepping
level
must
be
used
as
the
Bootstrap
Processor
(BSP).
This
processor
must
be
in
the
Microprocessor
1
location.
Switch
the
processors
in
the
Microprocessor
1
and
Microprocessor
2
locations.
Some
components
do
not
report
environmental
status
(temperature,
voltage).
The
green
status
dot
for
a
component
is
not
automatically
a
link
to
environmental
information
(temperature
and
voltage)
for
the
component.
Only
the
management
module
and
blade
servers
have
environmental
information,
and
only
the
green
dot
for
those
components
contains
a
link
to
environmental
information.
Switching
KVM
control
between
blade
servers
gives
USB
device
error.
If
a
blade
server
is
under
heavy
load,
it
can
take
several
minutes
before
it
enumerates
the
USB
devices
connected
to
it.
If
control
of
the
KVM
and
media
tray
is
switched
away
from
the
blade
server
before
this
enumeration
is
complete,
a
USB
device
installation
error
might
be
displayed.
Do
not
switch
KVM
control
between
blade
servers
until
the
mouse
and
keyboard
are
both
working
on
the
blade
server
that
has
control
of
the
KVM
and
media
tray.
“Unsafe
Removal
of
Device”
error
message
appears
on
blade
server
running
Microsoft
Windows
2000.
Before
switching
ownership
of
the
media
tray
to
another
blade
server,
safely
stop
the
media
tray
devices
on
the
blade
server
that
currently
owns
the
media
tray,
as
follows:
1.
Double-click
the
Unplug
or
Eject
Hardware
icon
in
the
Windows
taskbar
at
the
bottom
right
of
the
screen.
2.
Select
USB
Mass
Storage
Device,
and
click
Stop.
3.
Click
Close.
You
can
now
safely
switch
ownership
of
the
media
tray
to
another
blade
server.
90
BladeCenter
T
Type
8720
and
8730:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide