Install a memory module
Memory modules are installed in the compute system boards that are accessed from the front of the server.
S002
CAUTION:
The power control button on the device and the power switch on the power supply do not turn off the
electrical current that is supplied to the device. The device also might have more than one power
cord. To remove all electrical current from the device, ensure that all power cords are disconnected
from the power source.
CAUTION:
Make sure that all server power cords are disconnected from their power sources before performing
this procedure.
If you are installing an optional processor, install it before installing memory modules. See “Install a
processor-heat-sink module” on page 51
Important: Before installing a memory module, make sure that you have selected the correct type of
memory module and understand the installation order, depending on whether you are implementing memory
mirroring, memory rank sparing, or independent memory mode. See
the Lenovo ThinkSystem SR950 Memory
Population Reference
for specific information about installing memory modules and their required installation
order, based on the number of processors and memory modules in your system and the memory mode that
you are implementing.
See
http://www.lenovo.com/us/en/serverproven/ for a list of all the memory module types and capacities that
are supported for your server.
Notes:
• Do not mix RDIMMs and LR-DIMMs in the same server.
• Install higher capacity (ranked) DIMMs first, following the population sequence for the memory mode
being used.
• Installing or removing DIMMs changes the server configuration. When you restart the server, it displays a
message that indicates that the memory configuration has changed. There are multiple ways to view the
server configuration. See “Management options” on page 8 for a description of each management
method and how each method applies to various deployment situations.
If the compute system board is already installed in the server:
1. If the front cover is installed, remove it. See “Remove the front cover” on page 139.
2. Remove the compute tray with the compute system board where you are installing the memory module.
See “Remove a compute tray” on page 123.
3. If you are installing a memory module in the lower compute system board, remove the upper compute
system board or compute system board filler. See “Remove a compute system board” on page 126.
54
ThinkSystem SR950 Setup Guide
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