Penguin Computing Relion 1900e Technical Manual page 46

installed on the channel behind the failed DIMM will be marked as disabled, with POST Error Code
854x "DIMM Disabled". This results in a momentary Error Display 0xEB, and if all DIMMs have failed,
this will result in a Fatal Error Halt 0xE8.
No usable memory installed – If no enabled and available memory remains, this will result in a Fatal
•
Error Halt 0xE8.
The ECC functionality is enabled after all of memory has been cleared to zeroes to make sure that the data
bits and the ECC bits are in agreement.
4.8.3.3 RAS Mode Initialization
If configured, the DIMM configuration is validated for the specified RAS mode. If the enabled DIMM
configuration is compliant for the RAS mode selected, then the appropriate register settings are set and the
RAS mode is started.
Potential Error Cases:
RAS Configuration Failure – If the DIMM configuration is not valid for the RAS mode which was
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selected, then the operating mode falls back to Independent Channel Mode, and a POST Error Code
8500 "Selected RAS Mode could not be configured" is generated. In addition, a "RAS Configuration
Disabled" SEL entry for "RAS Configuration Status" (BIOS Sensor 02/Type 0Ch/Generator ID 01) is
logged.
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Relion 1900e/2900e Manual
Revision 1.3