IBM JS20 Hardware Maintenance Manual - Page 58

Recovering, system, firmware, Recovery, using, service, Starting, image

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Recovering the system firmware code The system firmware is contained in two separate images in the flash memory of the blade server: temporary and permanent. These images are referred to as TEMP and PERM, respectively. The system normally starts from the TEMP image, and the PERM image serves as a backup. If the TEMP image becomes damaged, such as from a power failure during a flash update, you can recover the TEMP image from the PERM image. If the TEMP image becomes damaged, you can see one of two symptoms: v The system automatically starts from the PERM image. This is indicated by the error code 20D00902. v The system hangs or is non-responsive after the system is started with no checkpoints. If your system hangs, you can force the system to start from the PERM image by using the code page jumper (J14). v Setting jumper J14 to pins 2 and 3 will force the blade server to start (boot) from the PERM image. v Setting jumper J14 to pins 1 and 2 will enable the blade server to start (boot) from either the TEMP or PERM image. Recovery of system firmware code using service aids Linux on pSeries service aids for hardware diagnostics are available for customers who have installed and are running the Linux operating system. Users can install these free diagnostics tools for effective diagnosis and repair of the system in the rare instance when a system error occurs. This service aid toolkit provides the key tools required to take advantage of the inherent pSeries hardware RAS functions as outlined in the Linux on pSeries RAS White paper available from http://techsupport.services.ibm.com/server/ Linux_on_pSeries/images/Linux_RAS.pdf. These functions include first failure data capture and error log analysis. With the toolkit installed, problem determination and correction is greatly enhanced and the likelihood of an extended system outage is reduced. The Linux service aids for hardware diagnostics are separate from the operating system installation and are available for download from the following Web site: http://techsupport.services.ibm.com/server/lopdiags/. Note: The Update_Flash command can only be performed if the Linux service tools have been installed on the blade server. Starting the TEMP image To force the system to start the TEMP image, complete the following steps: Note: Do not perform these steps if the system error code 20D00902 has already occurred on your system. 1. Turn off the blade server. 2. Remove the blade server (see "Removing the blade server from the BladeCenter unit" on page 73). 3. Open the blade-server cover (see "Opening the blade server cover" on page 74 for instructions). 48 BladeCenter JS20 Type 8842: Hardware Maintenance Manual and Troubleshooting Guide

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Recovering
the
system
firmware
code
The
system
firmware
is
contained
in
two
separate
images
in
the
flash
memory
of
the
blade
server:
temporary
and
permanent.
These
images
are
referred
to
as
TEMP
and
PERM,
respectively.
The
system
normally
starts
from
the
TEMP
image,
and
the
PERM
image
serves
as
a
backup.
If
the
TEMP
image
becomes
damaged,
such
as
from
a
power
failure
during
a
flash
update,
you
can
recover
the
TEMP
image
from
the
PERM
image.
If
the
TEMP
image
becomes
damaged,
you
can
see
one
of
two
symptoms:
v
The
system
automatically
starts
from
the
PERM
image.
This
is
indicated
by
the
error
code
20D00902.
v
The
system
hangs
or
is
non-responsive
after
the
system
is
started
with
no
checkpoints.
If
your
system
hangs,
you
can
force
the
system
to
start
from
the
PERM
image
by
using
the
code
page
jumper
(J14).
v
Setting
jumper
J14
to
pins
2
and
3
will
force
the
blade
server
to
start
(boot)
from
the
PERM
image.
v
Setting
jumper
J14
to
pins
1
and
2
will
enable
the
blade
server
to
start
(boot)
from
either
the
TEMP
or
PERM
image.
Recovery
of
system
firmware
code
using
service
aids
Linux
on
pSeries
service
aids
for
hardware
diagnostics
are
available
for
customers
who
have
installed
and
are
running
the
Linux
operating
system.
Users
can
install
these
free
diagnostics
tools
for
effective
diagnosis
and
repair
of
the
system
in
the
rare
instance
when
a
system
error
occurs.
This
service
aid
toolkit
provides
the
key
tools
required
to
take
advantage
of
the
inherent
pSeries
hardware
RAS
functions
as
outlined
in
the
Linux
on
pSeries
RAS
White
paper
available
from
Linux_on_pSeries/images/Linux_RAS.pdf.
These
functions
include
first
failure
data
capture
and
error
log
analysis.
With
the
toolkit
installed,
problem
determination
and
correction
is
greatly
enhanced
and
the
likelihood
of
an
extended
system
outage
is
reduced.
The
Linux
service
aids
for
hardware
diagnostics
are
separate
from
the
operating
system
installation
and
are
available
for
download
from
the
following
Web
site:
Note:
The
Update_Flash
command
can
only
be
performed
if
the
Linux
service
tools
have
been
installed
on
the
blade
server.
Starting
the
TEMP
image
To
force
the
system
to
start
the
TEMP
image,
complete
the
following
steps:
Note:
Do
not
perform
these
steps
if
the
system
error
code
20D00902
has
already
occurred
on
your
system.
1.
Turn
off
the
blade
server.
2.
Remove
the
blade
server
(see
“Removing
the
blade
server
from
the
BladeCenter
unit”
on
page
73).
3.
Open
the
blade-server
cover
(see
“Opening
the
blade
server
cover”
on
page
74
for
instructions).
48
BladeCenter
JS20
Type
8842:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide