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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.
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.
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 DCPMM mode fails
After the DCPMM mode is changed and the system is successfully restarted, if the DCPMM mode stays the
same instead of being changed, check the DRAM DIMMs and DCPMM capacity to see if it meets the
requirement of the new mode (see "Intel Optane DC Persistent Memory (DCPMM) setup" 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.
Monitor and video problems
Use this information to solve problems related to a monitor or video.
•
"Incorrect characters are displayed" on page 152
•
"Screen is blank" on page 152
•
"Screen goes blank when you start some application programs" on page 152
•
"The monitor has screen jitter, or the screen image is wavy, unreadable, rolling, or distorted." on page 152
•
"The wrong characters appear on the screen" on page 153
•
"Management controller remote presence cannot work" on page 153
.
Chapter 4
Problem determination
151
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