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 3.
Your server has 12 memory slots with 12 channels. For a list of supported memory options, see:
https://serverproven.lenovo.com.
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
Specific information about the required installation order of memory modules in your server based on the
system configuration is shown below.
Memory modules and processors layout
Figure 12. 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 11. Memory slot and channel identification
Processor CPU
UMC No. UMC2 UMC1 UMC5 UMC0 UMC4 UMC3 UMC9
UM-
C10
UMC6
UM-
C11
UM-
C7
UM-
C8
Channel No. CH-F CH-E CH-D CH-C CH-B CH-A CH-G CH-H CH-I CH-J CH-K CH-L
DIMM No. 12 11 10 9 8 7 6 5 4 3 2 1
Chapter 5. Hardware replacement procedures 39
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