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Memory module installation rules and order
Memory modules must be installed in a specific order based on the memory configuration that you
implement and the number of processors and memory modules installed in the server.
Supported memory types
For information on the types of memory module supported by this server, see "Memory" section in
technical specifications" on page
Information about optimizing memory performance and configuring memory is available at the Lenovo Press
website:
https://lenovopress.lenovo.com/servers/options/memory
In addition, you can take advantage of a memory configurator, which is available at the following site:
https://dcsc.lenovo.com/#/memory_configuration
For the specific information about the required installation order of memory modules in SD550 V3 based on
the system configuration and memory mode that you are implementing, see below.
Memory modules and processors layout
Figure 15. Memory modules and processors layout
The memory-channel configuration table below shows the relationship between the processors, memory
controllers, memory channels, and memory module slot numbers.
Table 12. Memory slot and channel identification
Processor
Channel
CH1 (7/H) CH0 (6/G) CH1 (5/F) CH0 (4/E)
DIMM slot No.
Processor
Channel
CH1 (3/D) CH0 (2/C)
DIMM slot No.
6.
8
7
6
CH1 (1/
B)
16
15
14
Processor 1
CH0 (0/A)
CH1 (1/B)
5
4
Processor 2
CH0 (0/A)
CH0 (4/E)
CH1 (5/F)
13
12
.
Chapter 5
"Node
CH0 (2/C)
CH1 (3/D)
3
2
CH0 (6/G)
CH1 (7/H)
11
10
Hardware replacement procedures
1
9
47
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Troubleshooting
