connector
2
(in
channel
0)
and
connector
5
(in
channel
1).
However,
if
the
DIMMs
are
double-rank
and
you
install
the
spare
pair
of
DIMMs
in
branch
1,
DIMM
connector
7
(channel
2)
and
connector
10
(channel
3)
rather
than
branch
0,
then
branch
1
will
support
online-sparing
and
branch
0
will
not.
-
Branch
0
and
branch
1
operate
independently.
v
The
following
notes
apply
when
the
server
operates
in
non-mirroring
mode
(normal
mode):
–
DIMMs
must
be
installed
in
matched
pairs.
If
you
install
a
second
pair
of
DIMMs
in
DIMM
connector
7
and
DIMM
connector
10,
they
do
not
have
to
be
the
same
size,
speed,
type,
and
technology
as
the
DIMMs
in
DIMM
connector
1
and
DIMM
connector
4.
However,
the
size,
speed,
type,
and
technology
of
the
DIMMs
that
you
install
in
DIMM
connector
7
and
DIMM
connector
10
must
match
each
other.
–
The
following
table
shows
the
DIMM
upgrade
configuration
sequence
for
operating
in
non-mirroring
mode
(normal
mode).
Table
4.
DIMM
upgrade
configuration
sequence
in
non-mirroring
mode
(normal)
Number
of
DIMMs
DIMM
connectors
2
1,
4
4
1,
4,
7,
10
6
1,
4,
7,
10,
2,
5
8
1,
4,
7,
10,
2,
5,
8,
11
Note:
DIMM
connectors
3,
6,
9,
and
12
are
not
functional
in
this
server.
Do
not
install
DIMMs
in
these
connectors.
v
The
amount
of
usable
memory
will
be
reduced
depending
on
the
system
configuration.
A
certain
amount
of
memory
must
be
reserved
for
system
resources.
To
view
the
total
amount
of
installed
memory
and
the
amount
of
configured
memory,
run
the
Configuration/Setup
Utility
program
and
select
System
Summary
from
the
menu.
For
additional
information,
see
the
User’s
Guide
.
v
The
following
tables
show
examples
of
maximum
memory
capacity
when
the
server
operates
in
mirroring
and
non-mirroring
modes,
using
identical
single-rank,
x8
technology
or
double-rank,
x4
technology
DIMMs.
The
memory
capacity
is
dependent
on
the
size
and
technology
of
the
DIMMs
you
install.
Table
5.
Example
of
the
memory
capacity
when
using
identical
x8
technology
single-rank
DIMMs
DIMMs
installed
x8
Single-rank
technology
Memory
available
in
mirroring
mode
Memory
available
in
non-mirroring
mode
8
512
Mb
2
GB
4
GB
8
1
Gb
4
GB
8
GB
8
2
Gb
8
GB
16
GB
Table
6.
Example
of
the
memory
capacity
when
using
identical
x4
technology
double-rank
DIMMs
DIMMs
installed
x4
Double-rank
technology
Memory
available
in
mirroring
mode
Memory
available
in
non-mirroring
mode
8
512
Mb
8
GB
16
GB
8
1
Gb
16
GB
32
GB
18
System
x3400
Types
7973,
7974,
7975,
and
7976:
Installation
Guide
Summary of Contents for System x3400 Type 7975
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