Lenovo ThinkSystem SR630 V3 - Technical Rules; Pcie Slots and Adapters

• All memory modules to be installed must be of the same type with the same capacity, frequency, voltage,
and ranks.
• Mirroring can be configured across channels in the same iMC, and the total TruDDR5 memory size of the
primary and secondary channels must be the same.
• 9x4 RDIMMs do not support mirroring mode.
• Partial Memory Mirroring is a sub-function of memory mirroring. It requires to follow the memory
population for memory mirroring.
The following table shows the memory module population sequence for mirroring mode when only one
processor (processor 1) is installed.
Table 32. Mirroring mode with one processor (processor 1)
Configura-
tion
DIMM slots
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
8 DIMMs 16 14 12 10 7 5 3 1
16 DIMMs 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
Note: DIMM configurations listed in the table support the Sub NUMA Clustering (SNC) feature, which can be
enabled via UEFI. SNC is not supported if DIMM population does not follow the sequence indicated by the
table above.
The following table shows the memory module population sequence for mirroring mode when two
processors (processor 1 and processor 2) are installed.
Table 33. Mirroring mode with two processors (processor 1 and processor 2)
Configura-
tion
DIMM slots
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
16 DIMMs 16 14 12 10 7 5 3 1
32 DIMMs 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
Configura-
tion
DIMM slots
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18
17
16 DIMMs 32 30 28 26 23 21 19 17
32 DIMMs 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
Note: DIMM configurations listed in the table support the Sub NUMA Clustering (SNC) feature, which can be
enabled via UEFI. SNC is not supported if DIMM population does not follow the sequence indicated by the
table above.
Technical rules
Refer to the below technical rules and limitations when you install the related server components.
PCIe slots and adapters
Understanding the technical rules for PCIe adapters helps you correctly install and configure PCIe adapters
in the system.
Chapter 5. Hardware replacement procedures 61