Lenovo RD430 manual CPU1 Dimm

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, RDIMM, or UDIMM) with the same rank, voltage, and frequency.

Figure 58. CPU1 DIMMs

Table 2. Memory module installation rules for servers with one microprocessor

CPU1 DIMM	A1	A2	B1	B2	C1	C2
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

Chapter 6. Installing, removing, or replacing hardware 97