Lenovo ThinkSystem SR630 Maintenance Manual page 245

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.
Multiple memory modules in a channel identified as failing
Note: Each time you install or remove a memory module, you must disconnect the server from the power
source; then, wait 10 seconds before restarting the server.
Complete the following procedure to solve the problem.
1. Reseat the memory modules; then, restart the server.
2. Remove the highest-numbered memory module of those that are identified and replace it with an
identical known good memory module; then, restart the server. Repeat as necessary. If the failures
continue after all identified memory modules are replaced, go to step 4.
3. Return the removed memory modules, one at a time, to their original connectors, restarting the server
after each memory module, until a memory module fails. Replace each failing memory module with an
identical known good memory module, restarting the server after each memory module replacement.
Repeat step 3 until you have tested all removed memory modules.
4. Replace the highest-numbered memory module of those identified; then, restart the server. Repeat as
necessary.
5. Reverse the memory 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. (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.
7. (Trained technician only) Replace the system board.
Attempt to change to another PMEM mode fails
After the PMEM mode is changed and the system is successfully restarted, if the PMEM mode stays the
same instead of being changed, check the DRAM DIMMs and PMEM capacity to see if it meets the
requirement of the new mode (see "PMEM rules" in Setup Guide).
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
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
Go to UEFI Setup ➙ System Settings ➙ Intel Optane PMEMs ➙ Security ➙ Press to Disable
Security, and input passphrase to disable security.
.
Chapter 5 Problem determination
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