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Huawei Rack Server iBMC Alarm Handling 28

This document describes iBMC alarms in terms of the meaning, impact on the system, possible causes, and handling suggestions.
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ALM-0x0100004F DCPMM Fault (Memory, Major Alarm)

ALM-0x0100004F DCPMM Fault (Memory, Major Alarm)


Alarm message:

DCPMM (arg1 arg2) has a critical fault. error code: 0xarg3 (SN: arg4, PN: arg5).

From iBMC V316, the CPU and disk alarms will also include the SN and part umber and the mainboard and memory alarms will also include the part number.

This alarm is generated when a critical fault was detected on the DCPMM.

Alarm object: memory


Alarm ID Alarm Severity Auto Clear





Name Meaning


CPU socket number and channel number. For example, in a 2488 V5 server, CPU 1 channel 2 indicates the number 2 memory channel of CPU 1, that is, DIMMs DIMM020 and DIMM021.

The number of DIMMs corresponding to a memory channel varies depending on the server model.

You can obtain the CPU socket number and channel number corresponding to a DIMM from the server user guide. For example, if you use a 2488 V5 server, see Components > DIMM Slot Locations in the 2488 V5 Server V100R005 User Guide.


CPU socket number and DIMM silkscreen, for example, CPU1 DIMM020(A) or CPU2 DIMM110(B).


Error code of the alarm.


Memory serial number.


Part number.

Impact on the System

The DCPMM will be damaged or cannot be used.

Possible Causes

  • The memory endurance has reached the limit.

  • The memory space is used up.

  • The AIT DRAM is disabled.

  • The CAP self-check failed.

  • A serious internal fault occurred on the memory.


  1. Migrate data from the DCPMM to other storage media, and replace the DCPMM. Then, check whether the alarm is cleared.

    • If yes, no further action is required.

    • If no, go to 2.

  2. Contact Huawei technical support.
Updated: 2019-06-04

Document ID: EDOC1000054724

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