Lenovo ThinkServer TD340 User Manual And Hardware Maintenance Manual page 108

Memory module installation order in independent mode
This section explains the memory module installation order in independent mode. In this mode, the RAS
features are not available. For more information about the RAS features, refer to the related section in
"Features" on page 7.
Note: All memory modules to be installed must be the same type (LV RDIMM, RDIMM, or UDIMM). It is also
recommended that all memory modules have the same frequency, voltage, and number of ranks.
The following table explains the memory module installation order for servers that have only one
microprocessor (CPU1) installed.
Table 7. Memory module installation order in independent mode for servers with one microprocessor
CPU1 DIMM
DIMM installation order
The following table explains the memory module installation order for servers that have two microprocessors
(CPU1 and CPU2) installed.
Table 8. Memory module installation order in independent mode for servers with two microprocessors
DIMM installation order
Memory module installation order in mirroring mode
This section explains the memory module installation order in mirroring mode. In this mode, the server
maintains two identical copies of all data in memory and the RAS features are available. For more information
about the RAS features, refer to the related section in "Features" on page 7.
Notes:
• In this mode, slots A1 and A2 cannot be populated.
• All memory modules to be installed must be the same type (LV RDIMM, RDIMM, or UDIMM) with the
same capacity, frequency, voltage, and number of ranks.
The following table explains the memory module installation order for servers that have only one
microprocessor (CPU1) installed.
Table 9. Memory module installation order in mirroring mode for servers with one microprocessor
CPU1 DIMM
DIMM installation order
The following table explains the memory module installation order for servers that have two microprocessors
(CPU1 and CPU2) installed.
Table 10. Memory module installation order in mirroring mode for servers with two microprocessors
DIMM installation order
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ThinkServer TD340 User Guide and Hardware Maintenance Manual
A1 A2
1 4
CPU1 DIMM
A1 A2 B1 B2
1 7 3 9
A1 A2
CPU1 DIMM
A1 A2 B1 B2
1 5
B1 B2
2 5
C1 C2 D1 D2
5 11 2 8
B1 B2
1 3
D1 D2
C1 C2
2 6
C1 C2
3 6
CPU2 DIMM
E1 E2 F1 F2
4 10 6 12
C1 C2
2 4
CPU2 DIMM
E1 E2 F1 F2
3 7 4 8