Lenovo ThinkServer RD630 Hardware Maintenance Manual page 99

The following table provides information about the memory module installation rules for servers that have
only one microprocessor (CPU1) 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 47. CPU1 DIMMs
Table 1. Memory module installation rules for servers with one microprocessor
CPU1
A1 A2
DIMM
One
X
DIMM
Two
X
DIMMs
Three
X
DIMMs
Four
X
DIMMs
Six
X X
DIMMs
Eight
X X
DIMMs
Twelve
X X
DIMMs
Note: The twelve DIMMs configuration is supported only when you are using normal RDIMMs.
A3 B1 B2
X
X
X
X X
X X
X X X
B3 C1 C2
X
X
X
X X
X X X
.
Chapter 6 Installing, removing, or replacing hardware
C3 D1 D2
X
X
X X
X X X
D3
X
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