Lenovo ThinkServer TD340 User 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
A1
A2
B1
B2
C1
C2
DIMM installation order
1
4
2
5
3
6
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
CPU1 DIMM
CPU2 DIMM
A1
A2
B1
B2
C1
C2
D1
D2
E1
E2
F1
F2
DIMM installation order
1
7
3
9
5
11
2
8
4
10
6
12
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
A1
A2
B1
B2
C1
C2
DIMM installation order
1
3
2
4
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
CPU1 DIMM
CPU2 DIMM
A1
A2
B1
B2
C1
C2
D1
D2
E1
E2
F1
F2
DIMM installation order
1
5
2
6
3
7
4
8
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ThinkServer TD340 User Guide and Hardware Maintenance Manual