Lenovo ThinkServer RD340 (English) User Guide - Page 96

Figure 42. CPU1 DIMMs and CPU2 DIMMs Table 5. 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 73. 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: • To optimize system performance, ensure that you consider and follow the memory module installation rules when performing the operation. See "Memory module installation rules" on page 81. • Use any documentation that comes with the memory module and follow those instructions in addition to the instructions in this topic. To install a memory module, do the following: 1. Remove all media from the drives and turn off all attached devices and the server. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the server. 2. If the server is installed in a rack cabinet, remove the server from the rack cabinet and place it on a flat, clean, and static-protective surface. See the Rack Installation Instructions that comes with the server. 3. Remove the server cover. See "Removing the server cover" on page 75. 84 ThinkServer RD340 User Guide and Hardware Maintenance Manual