IBM 72335LU User Guide - Page 50

Active, Memory

Page 50 highlights

Memory hot-swap enabled LED Memory card/DIMM error LED Memory card power LED Memory hot-swap enabled LED: When this LED is lit, it indicates that hot-swap memory is enabled. Memory card/DIMM error LED: When this LED is lit, it indicates that a memory card or DIMM has failed. Memory card power LED: When this LED is off, it indicates that power is removed from the card and that you can remove the memory card and replace a failed DIMM. This LED also turns off when the release levers are opened. Active Memory Active Memory is an IBM technology that improves the reliability of the DIMMs through the memory mirroring, memory scrubbing, and Memory ProteXion™ features. The following notes describe the Active Memory features: v Memory mirroring enables you to improve the reliability of the memory in your server by creating a mirror of the data in memory port 1 and storing it in memory port 2. Note: For memory mirroring to work, DIMMs of the same size and clock speed must be installed in both memory ports. To enable memory mirroring, complete the following steps: 1. Install DIMMs of the same size and clock speed in the two memory ports. 2. Enable memory mirroring in the Configuration/Setup Utility program: a. Turn on the server. b. When the prompt Press F1 for Configuration/Setup is displayed, press F1. c. From the Configuration/Setup Utility main menu, select Advanced Setup. d. Select Memory Settings. 38 IBM System x3850 M2 and System x3950 M2 Type 7141: User's Guide

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Memory hot-swap
enabled LED
Memory card/DIMM
error LED
Memory card
power LED
Memory
hot-swap
enabled
LED:
When
this
LED
is
lit,
it
indicates
that
hot-swap
memory
is
enabled.
Memory
card/DIMM
error
LED:
When
this
LED
is
lit,
it
indicates
that
a
memory
card
or
DIMM
has
failed.
Memory
card
power
LED:
When
this
LED
is
off,
it
indicates
that
power
is
removed
from
the
card
and
that
you
can
remove
the
memory
card
and
replace
a
failed
DIMM.
This
LED
also
turns
off
when
the
release
levers
are
opened.
Active
Memory
Active
Memory
is
an
IBM
technology
that
improves
the
reliability
of
the
DIMMs
through
the
memory
mirroring,
memory
scrubbing,
and
Memory
ProteXion
features.
The
following
notes
describe
the
Active
Memory
features:
v
Memory
mirroring
enables
you
to
improve
the
reliability
of
the
memory
in
your
server
by
creating
a
mirror
of
the
data
in
memory
port
1
and
storing
it
in
memory
port
2.
Note:
For
memory
mirroring
to
work,
DIMMs
of
the
same
size
and
clock
speed
must
be
installed
in
both
memory
ports.
To
enable
memory
mirroring,
complete
the
following
steps:
1.
Install
DIMMs
of
the
same
size
and
clock
speed
in
the
two
memory
ports.
2.
Enable
memory
mirroring
in
the
Configuration/Setup
Utility
program:
a.
Turn
on
the
server.
b.
When
the
prompt
Press
F1
for
Configuration/Setup
is
displayed,
press
F1.
c.
From
the
Configuration/Setup
Utility
main
menu,
select
Advanced
Setup
.
d.
Select
Memory
Settings
.
38
IBM
System
x3850
M2
and
System
x3950
M2
Type
7141:
User’s
Guide