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The following table explains 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: All memory modules to be installed on a server must be the same type (LV RDIMM or RDIMM) with
the same rank, voltage, and frequency.
Figure 34. CPU1 DIMMs
Table 3. Memory module installation rules for servers with one microprocessor
CPU1
DIMM
A1 A2 A3 B1 B2 B3
C1 C2 C3
D1 D2 D3
One DIMM
X
Two DIMMs X X
Three
DIMMs
X 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
Note: The twelve DIMMs conguration is supported only when you are using normal RDIMMs.
The following table explains 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: All memory modules to be installed on a server must be the same type (LV RDIMM or RDIMM) with
the same rank, voltage, and frequency.
72 ThinkServer RD530 User Guide