When a single DIMM is marked as faulty by Oracle ILOM (for example, fault.memory.intel.dimm.training-failed is listed in the SP Event Log), BIOS might disable the entire memory channel that contains the faulty DIMM as failing, that is, up to two DIMMs. As a result, the memory available to the operating system is reduced.
However, when the Fault Remind button is pressed, only the fault LED associated with the faulty DIMM lights. The fault LED for the other DIMM in the memory channel remains off. Therefore, you can correctly identify the faulty DIMM.
When the faulty DIMM is replaced, the memory available to the operating system returns to normal. If the DIMM fault message in Oracle ILOM is not cleared under Open Problems, you should use Oracle ILOM to clear the fault. For instructions for manually clearing a DIMM fault, see the procedure "Undetected Replaced or Repaired Hardware Components" in the Oracle Integrated Lights Out Manager (ILOM) 3.1 User's Guide in the Oracle Integrated Lights Out Manager (ILOM) 3.1 Documentation Library at: http://www.oracle.com/pls/topic/lookup?ctx=ilom31.