Notes:
1.
If
the
wrong
diskette
is
inserted
at
any
time,
or
if
the
diskette
is
left
in
the
drive
after
it
has
been
read,
B1FD
001F
is
displayed,
indicating
that
the
wrong
diskette
is
in
the
drive.
2.
If
B1FD
001A
is
displayed
at
any
time
during
the
process,
the
service
processor
must
be
reset
by
activating
the
pinhole
reset
switch
on
the
primary
drawer
operator
panel.
After
the
update
process
is
complete,
the
service
processor
resets
itself
and
goes
through
a
complete
reboot.
Configuring
and
Deconfiguring
Processors
or
Memory
All
failures
that
crash
the
system
with
a
machine
check
or
check
stop,
even
if
intermittent,
are
reported
as
a
diagnostic
callout
for
service
repair.
To
prevent
the
recurrence
of
intermittent
problems
and
improve
the
availability
of
the
system
until
a
scheduled
maintenance
window,
processors
and
memory
DIMMs
with
a
failure
history
are
marked
″
bad
″
to
prevent
their
being
configured
on
subsequent
boots.
This
function
is
called
repeat
gard
.
A
processor
or
memory
DIMM
is
marked
″
bad
″
under
the
following
circumstances:
v
A
processor
or
memory
DIMM
fails
built-in
self-test
(BIST)
or
power-on
self-test
(POST)
testing
during
boot
(as
determined
by
the
service
processor).
v
A
processor
or
memory
DIMM
causes
a
machine
check
or
check
stop
during
runtime,
and
the
failure
can
be
isolated
specifically
to
that
processor
or
memory
DIMM
(as
determined
by
the
processor
runtime
diagnostics
in
the
service
processor).
v
A
processor
or
memory
DIMM
reaches
a
threshold
of
recovered
failures
that
results
in
a
predictive
callout
(as
determined
by
the
processor
run-time
diagnostics
in
the
service
processor).
During
boot
time,
the
service
processor
does
not
configure
processors
or
memory
DIMMs
that
are
marked
“bad.”
If
a
processor
or
memory
DIMM
is
deconfigured,
the
processor
or
memory
DIMM
remains
offline
for
subsequent
reboots
until
it
is
replaced
or
repeat
gard
is
disabled.
The
repeat
gard
function
also
provides
the
user
with
the
option
of
manually
deconfiguring
a
processor
or
memory
DIMM,
or
re-enabling
a
previously
deconfigured
processor
or
memory
DIMM.
For
information
about
configuring
or
deconfiguring
a
processor,
see
the
Processor
Configuration/Deconfiguration
Menu
on
page
206.
For
information
about
configuring
or
deconfiguring
a
memory
DIMM,
see
the
Memory
Configuration/Deconfiguration
Menu
on
page
207.
Both
of
these
menus
are
submenus
under
the
System
Information
Menu.
You
can
enable
or
disable
CPU
Repeat
Gard
or
Memory
Repeat
Gard
using
the
Processor
Configuration/Deconfiguration
Menu.
Run-Time
CPU
Deconfiguration
(CPU
Gard)
L1
instruction
cache
recoverable
errors,
L1
data
cache
correctable
errors,
and
L2
cache
correctable
errors
are
monitored
by
the
processor
run-time
diagnostics
(PRD)
code
running
in
the
service
processor.
When
a
predefined
error
threshold
is
met,
an
error
log
with
warning
severity
and
threshold
exceeded
status
is
returned
to
AIX.
At
the
same
time,
PRD
marks
the
CPU
for
deconfiguration
at
the
next
boot.
AIX
will
attempt
to
migrate
all
resources
associated
with
that
processor
to
another
processor
and
then
stop
the
defective
processor.
Chapter
7.
Using
the
Service
Processor
221
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