Lenovo 7D8T, Maintenance Manual

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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.
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.
Invalid memory population detected
If this warning message appears, complete the following steps:
Invalid memory population (unsupported DIMM population) detected. Please verify memory configuration is valid.
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.”
Extra namespace appears in an interleaved region
If there are two created namespaces in one interleaved region, VMware ESXi ignores the created
namespaces and creates an extra new namespace during system booting. Delete the created namespaces
in either the Setup Utility or the operating system before the first booting with ESXi.
Migrated PMEMs are not supported
If this warning message appears, complete the following steps:
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.
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
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
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ThinkEdge SE450 Maintenance Manual