Memory Faults

The memory capacity detected by the system is less than the configured memory capacity.

1. Check whether the DIMMs are compatible with the server by using Computing Product Compatibility Checker.
   • If yes, go to 3.
   • If no, replace the DIMM with a compatible model specified by Computing Product Compatibility Checker.
2. Check whether the current memory capacity is supported by the OS. For details about the memory capacity supported by each OS, see the related OS documents.
3. Check whether the DIMM installation positions meet configuration rules.
   • If yes, go to 4.
   • If no, reinstall the DIMMs in correct slots according to the configuration rules.
4. Check whether a "DIMMxxx configuration error" alarm is generated by iBMC.
   • If yes, replace the faulty DIMM. For details, see Handling Alarms.
   • If no, go to 5.
5. Check whether any DIMM slots are abnormal. If a DIMM slot is abnormal, replace the mainboard.

1. If the iBMC generates the "DIMMxxx Configuration Error" alarm, replace the related DIMM.
2. If the DIMM status displayed in iBMC or the OS is abnormal (unidentified or faulty), replace the faulty DIMMs.
3. If DIMMs do not comply with the DIMM installation rules, use Computing Product Memory Configuration Assistant to reinstall the DIMMs.
4. If DIMM installation slots are faulty, replace the mainboard.

An uncorrectable DIMM error is generated.

1. Exchange a DIMM you suspect to be faulty with a DIMM that is functioning correctly. Then, determine whether the fault is caused by the DIMM or DIMM slot.
   • If the fault is caused by the DIMM you suspect to be faulty, replace the DIMM.
   • If the fault is caused by the DIMM slot, replace the mainboard.
2. If the preceding steps do not reproduce the fault, use Smart Provisioning to perform memory pressure tests. If the fault is reproduced, perform 1. Otherwise, contact Huawei technical support.