Lenovo ThinkServer RD630 Hardware Maintenance Manual page 100

Machine types: 2577, 2579, 2592, 2593, 2594, and 2595
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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
A1
A2
A3
Two
X
DIMMs
Four
X
DIMMs
Six
X
DIMMs
Eight
X
DIMMs
Twelve
X
X
DIMMs
Sixteen
X
X
DIMMs
Twenty
X
X
X
DIMMs
Note: The twenty DIMMs configuration is supported only when you are using normal RDIMMs.
86
ThinkServer RD630 Hardware Maintenance Manual
CPU1 DIMM
B1
B2
B3
C1
C2
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
D1
D2
D3
A1
C3
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
CPU2 DIMM
A2
B1
B2
C1
C2
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
D1
D2
X
X
X
X
X
X

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