When
a
recoverable
error
is
found
by
memory
scrubbing,
the
Memory
ProteXion
feature
writes
the
data
that
was
to
be
stored
in
the
damaged
memory
locations
to
spare
memory
locations
within
the
same
DIMM.
Adding
and
replacing
a
memory
card
At
least
one
memory
card
with
one
pair
of
DIMMs
must
be
installed
for
the
server
to
operate
correctly.
Adding
a
memory
card
Complete
the
following
steps
to
add
a
memory
card:
1.
Read
the
safety
information
that
begins
on
page
v
and
“Installation
guidelines”
on
page
21.
2.
Turn
off
the
server
and
peripheral
devices,
and
disconnect
the
power
cords
and
all
external
cables
necessary
to
replace
the
device.
3.
Remove
the
cover
from
the
server
(see
“Removing
the
cover
and
bezel”
on
page
23).
4.
Prepare
the
memory
card:
a.
Touch
the
static-protective
package
that
contains
the
memory
card
to
any
unpainted
surface
on
the
outside
of
the
server;
then,
remove
the
memory
card
from
the
package.
b.
Place
the
memory
card
on
a
flat,
static-protected
surface
with
the
DIMM
connectors
facing
up.
c.
Install
DIMMs
in
the
memory
card
(see
“Installing
DIMMs”
on
page
36).
5.
Add
the
memory
card:
Attention:
When
moving
the
memory
card,
do
not
allow
it
to
touch
any
components
or
structures
inside
the
server.
a.
Grasp
the
memory
card
by
the
retention
levers
and
turn
the
memory
card
so
that
the
connector
aligns
with
the
connector
on
the
microprocessor
board.
b.
Insert
the
memory
card
into
the
memory
card
connector.
c.
Press
the
memory
card
into
the
connector
and
close
the
retention
levers.
If
you
have
other
options
to
install
or
remove,
do
so
now;
otherwise,
go
to
“Completing
the
installation”
on
page
47.
Hot-replacing
a
memory
card
To
hot-replace
a
memory
card,
memory
mirroring
must
be
enabled.
See
“Active
Memory”
on
page
33
for
information
on
how
to
enable
memory
mirroring.
Complete
the
following
steps
to
hot-replace
a
memory
card
in
the
server:
1.
Read
the
safety
information
that
begins
on
page
v
and
“Installation
guidelines”
on
page
21.
Attention:
Static
electricity
that
is
released
to
internal
server
components
when
the
server
is
powered-on
might
cause
the
server
to
halt,
which
could
result
in
the
loss
of
data.
To
avoid
this
potential
problem,
always
use
an
electrostatic-discharge
wrist
strap
or
other
grounding
system
when
working
inside
the
server
with
the
power
on.
2.
Remove
the
cover
from
the
server
(see
“Removing
the
cover
and
bezel”
on
page
23).
3.
Make
sure
the
memory
hot-swap
enabled
LED
is
lit
on
the
top
of
the
memory
card
to
be
replaced.
If
the
LED
is
not
lit,
enable
memory
mirroring
(see
“Active
Memory”
on
page
33).
Chapter
2.
Installing
options
35
Summary of Contents for x3950 8872
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