Lenovo 6434 User Manual
Page 41
Table
4.
Dual-channel
mode
with
single-rank
and
double-rank
DIMMs
First
pair
Second
pair
Remarks
DIMM
1
DIMM
2
DIMM
3
DIMM
4
Single-rank
Single-rank
Single-rank
Single-rank
Single-rank
Single-rank
Double-rank
Double-rank
This
configuration
is
the
second-best
choice.
Double-rank
Double-rank
Single-rank
Single-rank
This
configuration
is
the
best
choice.
Double-rank
Double-rank
Double-rank
Double-rank
The
following
table
shows
the
sequence
in
which
DIMMs
must
be
installed
in
the
server.
Table
5.
DIMM
installation
sequence
Number
of
DIMMs
Installation
sequence
(connectors)
1
1
2
(interleaved
configuration)
1,
3
3
The
use
of
three
DIMMs
is
not
supported,
4
(interleaved
configuration)
1,
3,
2,
4
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
v
When
you
restart
the
server
after
you
add
or
remove
a
DIMM,
the
server
displays
a
message
that
the
memory
configuration
has
changed.
Chapter
2.
Installing
optional
devices
27