Lenovo Flex System x220, Installation And Service Manual

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Installing a DIMM
Use this information to install a DIMM.
Before you install a DIMM, complete the following steps:
1. Read “Safety” on page iii and “Installation guidelines” on page 637.
2. Read the documentation that comes with the DIMMs.
3. If the compute node is installed in a Flex System chassis, remove it (see “Removing a compute node
from a chassis” on page 639 for instructions).
4. Carefully lay the compute node on a flat, static-protective surface, orienting the compute node with
the bezel pointing toward you.
This component can be installed as an optional device or as a CRU. The installation procedure is the same
for the optional device and the CRU.
After you install or remove a DIMM, you must change and save the new configuration information by using
the Setup utility. When you turn on the compute node, a message indicates that the memory configuration
has changed. Start the Setup utility and select
Save Settings (see “Using the Setup utility” on page 24
for more information) to save changes.
If you are replacing a DIMM as a result of a DIMM failure, you might have to reenable the DIMM. To reenable
the DIMM, complete the following steps:
1. Verify that the amount of installed memory is the expected amount through the operating system, by
watching the monitor as the compute node starts, by using the CMM sol sol
sol command, or through Flex
System Manager management software.
• For more information about the CMM sol sol
sol command, see the "Flex System
Chassis Management Module: Command-Line Interface Reference Guide" at
http://pic.dhe.ibm.com/infocenter/flexsys/information/topic/com.lenovo.acc.cmm.doc/cli_command_
sol.html.
• For more information about Flex System Manager management software,
see the "Flex System Manager Software: Installation and Service Guide" at
http://pic.dhe.ibm.com/infocenter/flexsys/information/topic/com.ibm.acc.8731.doc/product_
page.html.
2. Run the Setup utility to reenable the DIMMs (see “Using the Setup utility” on page 24 for more
information).
The compute node supports low-profile (LP) DDR3 DIMMs with error-correcting code (ECC) in 2 GB, 4 GB,
8 GB, and 16 GB capacities.
The following illustration shows the system-board components, including the DIMM connectors.
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Flex System x220 Compute Node Installation and Service Guide