RX2540 M1
Upgrade and Maintenance Manual
279
Main memory
Notes on Rank Sparing mode
– Same numbers mean identical modules (capacity, rank)
– In case of Single-/Dual-Rank memory configurations, at least two 1R or 2R
modules must be populated per a channel.
– In case of Quad-Rank memory modules, please note the following: Due to
performance reasons, always populate a new channel before installing the
3rd memory slot of a channel.
– Only one memoy module capacity per CPU is allowed.
If two different memory module capacities have been ordered for Rank
Sparing mode, populate them on different CPUs, so that each CPUs only
comprises modules of one capacity
Example:
12 modules have been ordered, 8 x 4 GB and 4 x 8 GB.
In this case, proceed as follows:
Ê
Use the capacity group with more memory modules for CPU 1 and
populate them according to the population sequence for mono CPU
configurations.
Ê
Populate the other capacity group on CPU 2 according to the population
rules for mono CPU configurations.
2
U
P
C
U
P
C
1
U
P
C
U
P
C
Ch.
A B D C
Ch.
E F H G
DIMM
1A 2A
3A
1B 2B
3B
1D 2D
3D
1C 2C
3C
DIMM
1E 2E
3E
1F 2F
3F
1H 2H
3H
1G 2G
3G
#
Dual CPU configuration
(if modules are of different capacities)
#
Dual CPU configuration
(if modules are of different capacities)
1
1
1
2
2
1
1
2
2
2
3
1
1
1
3
2
2
2
4
1
1
1
1
4
2
2
2
2
5
1
1
1
1
1
5
2
2
2
2
2
6
1
1
1
1
1
1
6
2
2
2
2
2
2
7
1
1
1
1
1
1
1
7
2
2
2
2
2
2
2
8
1
1
1
1
1
1
1
1
8
2
2
2
2
2
2
2
2
9
1
1
1
1
1
1
1
1
1
9
2
2
2
2
2
2
2
2
2
10
1
1
1
1
1
1
1
1
1
1
10
2
2
2
2
2
2
2
2
2
2
11
1
1
1
1
1
1
1
1
1
1
1
11
2
2
2
2
2
2
2
2
2
2
2
12
1
1
1
1
1
1
1
1
1
1
1
1
12
2
2
2
2
2
2
2
2
2
2
2
2
Summary of Contents for PRIMERGY RX2540 M1
Page 24: ...24 Upgrade and Maintenance Manual RX2540 M1 Contents ...
Page 38: ...38 Upgrade and Maintenance Manual RX2540 M1 Before you start ...
Page 68: ...68 Upgrade and Maintenance Manual RX2540 M1 Basic hardware procedures ...
Page 150: ...150 Upgrade and Maintenance Manual RX2540 M1 Hard disk drives solid state drives ...
Page 158: ...158 Upgrade and Maintenance Manual RX2540 M1 System fan ...
Page 316: ...316 Upgrade and Maintenance Manual RX2540 M1 Processors ...
Page 330: ...330 Upgrade and Maintenance Manual RX2540 M1 Accessible drives ...
Page 362: ...362 Upgrade and Maintenance Manual RX2540 M1 Front panel and external front connectors ...
Page 410: ...410 Upgrade and Maintenance Manual RX2540 M1 System board and components ...
Page 418: ...418 Upgrade and Maintenance Manual RX2540 M1 Cables ...
Page 438: ...438 Upgrade and Maintenance Manual RX2540 M1 Appendix ...