Lenovo 7X19 Setup Manual page 144

b. Refer to "Intel Optane DC Persistent Memory (DCPMM) setup" in Setup Guide
Memory Module (DCPMM) setup" on page 76
description.
c. If DCPMMs are recently set in Memory Mode, turn it back to App Direct Mode and examine if
there is namespace that has not been deleted (see "Intel Optane DC Persistent Memory (DCPMM)
setup" in Setup Guide
d. Go to the Setup Utility, select System Configuration and Boot Management ➙ Intel Optane
DCPMMs ➙ Security, and make sure all the DCPMM units are unlocked.
2. Reseat the memory modules, and then restart the server.
3. Check the POST error log:
• If a memory module was disabled by a systems-management interrupt (SMI), replace the memory
module.
• If a memory module was disabled by the user or by POST, reseat the memory module; then, run the
Setup utility and enable the memory module.
4. Run memory diagnostics. When you start a solution and press the key according to the on-screen
instructions, the LXPM interface is displayed by default. (For more information, see the "Startup" section
in the LXPM documentation compatible with your server at
can perform memory diagnostics with this interface. From the Diagnostic page, go to Run Diagnostic ➙
Memory test or DCPMM test.
Notes: When DCPMMs are installed, run diagnostics based on the mode that is set presently:
• App Direct Mode:
– Run Memory Test for DRAM memory modules.
– Run DCPMM Test for DCPMMs.
• Memory and Mixed Memory Mode:
Run both Memory Test and DCPMM Test for DCPMMs.
5. Reverse the modules between the channels (of the same processor), and then restart the server. If the
problem is related to a memory module, replace the failing memory module.
Note: When DCPMMs are installed, only adopt this method in Memory Mode.
6. Re-enable all memory modules using the Setup utility, and then restart the server.
7. (Trained technician only) Install the failing memory module into a memory module connector for
processor 2 (if installed) to verify that the problem is not the processor or the memory module connector.
8. (Trained technician only) Replace the system board.
A Lenovo optional device that was just installed does not work.
1. Make sure that:
• The device is supported for the server (see
• You followed the installation instructions that came with the device and the device is installed
correctly.
• You have not loosened any other installed devices or cables.
• You updated the configuration information in system setup. When you start a server and press the
key according to the on-screen instructions to display the Setup Utility. (For more information, see the
"Startup" section in the LXPM documentation compatible with your server at
.) Whenever memory or any other device is changed, you must update the
lxpm-overview/
configuration.
2. Reseat the device that you have just installed.
3. Replace the device that you have just installed.
ThinkSystem SR850 Setup Guide
136
"DC Persistent Memory Module (DCPMM) setup" on page
https://serverproven.lenovo.com/
and see if the displayed memory fits the mode
https://pubs.lenovo.com/lxpm-overview/
"DC Persistent
76).
.) You
).
https://pubs.lenovo.com/