Lenovo ThinkServer RD630 User Manual
Page 98
The following table provides information about the memory module installation rules for servers that have
two microprocessors (CPU1 and CPU2) installed. The “X” mark indicates the memory slot(s) into which the
memory module(s) should be installed in different situations.
Note: The installed memory modules must be the same type (LV RDIMM or RDIMM) with the same rank,
voltage, and frequency.
Figure 48. CPU1 DIMMs and CPU2 DIMMs
Table 2. Memory module installation rules for servers with two microprocessors
CPU1 DIMM
CPU2 DIMM
A1
A2
A3
B1
B2
B3
C1
C2
C3
D1
D2
D3
A1
A2
B1
B2
C1
C2
D1
D2
Two
DIMMs
X
X
Four
DIMMs
X
X
X
X
Six
DIMMs
X
X
X
X
X
X
Eight
DIMMs
X
X
X
X
X
X
X
X
Twelve
DIMMs
X
X
X
X
X
X
X
X
X
X
X
X
Sixteen
DIMMs
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Twenty
DIMMs
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Note: The twenty DIMMs configuration is supported only when you are using normal RDIMMs.
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ThinkServer User Guide