Lenovo ThinkSystem SR850 V2 Maintenance Manual page 247

Migrated PMEMs are not supported
Intel Optane PMEM interleave set (DIMM X) is migrated from another system (Platform ID: 0x00), these migrated
PMEMs are not supported nor warranted in this system.
If this warning message appears, complete the following steps:
1. Move the modules back to the original system with the exact same configuration as the previous one.
2. Back up stored data in PMEM namespaces.
3. Disable PMEM security with one of the following options:
• LXPM V3
Go to UEFI Setup ➙ System Settings ➙ Intel Optane PMEMs ➙ Security ➙ Press to Disable
Security, and input passphrase to disable security.
• Setup Utility
Go to System Configuration and Boot Management ➙ System Settings ➙ Intel Optane PMEMs
➙ Security ➙ Press to Disable Security, and input passphrase to disable security.
4. Delete namespaces with command corresponding to the operating system that is installed:
• Linux command:
ndctl destroy-namespace all -f
• Windows Powershell command
Get-PmemDisk | Remove-PmemDisk
5. Clear Platform Configuration Data (PCD) and Namespace Label Storage Area (LSA) with the following
ipmctl command (for both Linux and Windows).
ipmctl delete -pcd
Notes: See the following links to learn how to download and use impctl in different operating systems:
• Windows: https://datacentersupport.lenovo.com/us/en/videos/YTV101407
• Linux: https://datacentersupport.lenovo.com/us/en/solutions/HT508642
6. Reboot the system, and press F1 to enter Setup Utility.
7. Power off the system.
8. Remove the modules to be reused for a new system or configuration.
Invalid memory population detected
Invalid memory population (unsupported DIMM population) detected. Please verify memory configuration is valid.
If this warning message appears, complete the following steps:
1. See "Memory module installation rules and order" in Setup Guide to make sure the present memory
module population sequence is supported.
2. If the present sequence is indeed supported, see if any of the modules is displayed as "disabled" in
Setup Utility.
3. Reseat the module that is displayed as "disabled," and reboot the system.
4. If the problem persists, replace the memory module that is displayed as "disabled."
PMEMs installed in wrong slots after system board replacement
DIMM X of Intel Optane PMEM persistent interleave set should be moved to DIMM Y.
.
Chapter 5 Problem determination
239