Lenovo ThinkSystem SR950 Setup Manual page 75

7. Follow the slot combination in "DCPMM installation order" on page 71 to install all the DCPMMs and
DRAM DIMMs (see "Install a memory module" on page 233).
8. Disable security on all the installed DCPMMs (see "Configure DC Persistent Memory Module (DCPMM)"
on page 147).
9. Make sure the DCPMM firmware is the latest version. If not, update it to the latest version (see
sysmgt.lenovofiles.com/help/topic/com.lenovo.lxca.doc/update_fw.html
10. Configure DCPMMs so that the capacity is available for use (see "Configure DC Persistent Memory
Module (DCPMM)" on page 147).
11. Restore the data that have been backed up.
DCPMM installation order
The server also supports Intel Optane DC persistent memory modules (DCPMMs). Use this information to
determine the correct installation order, depending on the configuration.
Notes:
• Before installing DCPMMs and DRAM DIMMs, refer to "DC Persistent Memory Module (DCPMM) setup"
on page 69 and make sure to meet all the requirements.
• To verify if the presently installed processors support DCPMMs, examine the four digits in the processor
description. Only the processor with description meeting both of the following requirements support
DCPMMs.
– The first digit is 5 or a larger number.
Note: The only exception to this rule is Intel Xeon Silver 4215, which also supports DCPMM.
– The second digit is 2.
Example: Intel Xeon 5215L and Intel Xeon Platinum 8280M
If the presently installed processors do not support DCPMMs, replace them with the processors that
support DCPMMs.
• Supported memory capacity range varies with the following types of processors.
– Large memory tier (L): The processors with L after the four digits (for example: Intel Xeon 5215L)
– Medium memory tier (M): The processors with M after the four digits (for example: Intel Xeon Platinum
8280M)
– Other: Other processors that support DCPMMs (for example: Intel Xeon Gold 5222)
In addition, you can take advantage of a memory configurator, which is available at the following site:
http://1config.lenovo.com/#/memory_configuration
App Direct Mode
In App Direct Mode, DCPMMs act as independent and persistent memory resources directly accessible by
specific applications, and DRAM DIMMs act as system memory.
When implementing App Direct Mode, any supported DIMMs in any capacity can be installed.
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Chapter 3 Server hardware setup
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