Lenovo ThinkServer RD530 User Manual
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Notes:
• All memory modules to be installed on a server must be the same type (LV RDIMM, RDIMM, or UDIMM).
• When you install memory modules with different ranks in one channel, start from the farthest memory slot
in the channel and install the memory module that has the most ranks first.
• When 1.35 V memory modules and 1.50 V memory modules are installed into the memory slots for the
same microprocessor, all the memory modules run at 1.50 V.
• When memory modules with different frequencies are installed into the memory slots for the same
microprocessor, all the memory modules run at the lowest frequency.
• It is recommended that you install the low-voltage memory modules into the memory slots for the same
microprocessor to ensure low power consumption.
• It is recommended that you install the high-frequency memory modules into the memory slots for the
same microprocessor to ensure high performance.
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 12 DIMMs configuration 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 slots into which the memory modules
should be installed in different situations.
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ThinkServer RD530 User Guide