Installing A Memory Module - Lenovo ThinkServer RD240 Installation And User Manual

Installing a memory module

This section provides instructions on how to install a memory module.
To install a memory module, do the following:
1. Remove all media from the drives and turn off all attached devices and the
2. Remove the server cover. See "Removing the server cover" on page 21.
3. Locate the appropriate memory slot on the system board into which you will
4. Open the retaining clips of the memory slot into which you want to install the
Figure 9. Opening the retaining clips of the memory slot
5. Touch the static-protective package that contains the new memory module to
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Installation and User Guide
Table 9. DIMM installation rules when two microprocessors (CPU0 and CPU1) are
installed (continued)
DIMM slot Two DIMMs
Note: For the Channel Mirroring Mode, it requires that you install the DIMMs in pair, and
the DIMM installation for Channel Mirroring Mode when two microprocessors (CPU0 and
CPU1) are installed is shown below. Follow this sequence rather than the sequence listed
above if you want to use the Channel Mirroring Mode.
1. Pair 1: install a DIMM on CPU0 DIMM CHA0 and then install a DIMM on CPU0
DIMM CHB0.
2. Pair 2: install a DIMM on CPU1 DIMM CHA0 and then install a DIMM on CPU1
DIMM CHB0.
Attention
Do not open your server or attempt any repair before reading and understanding the Safety
Information and the Warranty and Support Information on the ThinkServer Documentation DVD
that comes with your product, and "Guidelines" on page 19. To obtain a copy of the
publications, go to:
http://www.lenovo.com/support
server. Then, disconnect all power cords from electrical outlets and disconnect
all cables that are connected to the server.
install the memory module. To optimize system performance, follow the related
memory module installation rules and install the memory module into a
memory slot starting with the memory module farthest from the
microprocessor. See "Memory module installation rules" on page 23.
memory module.
any unpainted metal surface on the outside of the server. Then, remove the
new memory module from the package.
Four DIMMs Six DIMMs Eight DIMMs