Lenovo RD430 manual Installing a memory module

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.

Figure 59. CPU1 DIMMs and CPU2 DIMMs

Table 3. Memory module installation rules for servers with two microprocessors

CPU1 DIMM

CPU2 DIMM

A1

A2

B1

B2

C1

C2

A1

A2

B1

B2

C1

C2

Two DIMMs

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

Installing a memory module

Attention: Do not open your server or attempt any repair before reading and understanding “Safety information” on page iii and “Guidelines” on page 81.

This topic provides instructions on how to install a memory module.

Before you begin, print all the related instructions or ensure that you can view the PDF version on another computer for reference.

Notes:

•Ensure that you consider and follow the memory module installation rules when performing the operation. See “Memory module installation rules” on page 95.

•Use any documentation that comes with the memory module and follow those instructions in addition to the instructions in this topic.

98ThinkServer RD430 User Guide