NEC Express5800/T120h User Manual page 82

Chapter 2 Preparations
Notes for the configuration of memory sparing
Even when setting "Advanced Memory Protection" to "Online Spare with Advanced ECC Support" and
designating memory sparing configuration, in case DIMM configuration which cannot constitute memory
sparing due to expansion or removal of DIMM is detected, "Advanced Memory Protection" operates as
"Advanced ECC."
In this case, POST's "Advanced Memory Protection Mode:" is displayed "Advanced ECC."
IML also records the relevant error events.
Notes for replacements at failure
At the time of failure, identify damaged DIMM from IML and replace DIMM one by one.
(3)
Memory ADDDC function
"Memory ADDDC function" of this device allows the correction of memory errors and continuation the operation
even whilst failures occur in multiple DRAM devices on the DIMM. This provides protection against
uncorrectable memory errors beyond those available in Advanced ECC.
Ex: Configuration with 2 CPUs (DIMM x12)
82
Express5800/T120h User's Guide
1. Installing Internal Optional Devices