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Chapter 6: BIOS
Memory RAS (Reliability_Availability_Serviceability) Configuration
Use this submenu to configure the following Memory RAS settings.
Static Virtual Lockstep Mode
Select Enable to support Static Virtual Lockstep mode to enhance memory performance.
The options are Enable and Disable.
Mirror Mode
Use this feature to configure the mirror mode settings for all 1LM/2LM memory modules
installed in the system which will create a duplicate copy of data stored in the memory to
increase memory security, but it will reduce the memory capacity into half. The options are
Disable, Mirror Mode 1LM, and Mirror Mode 2LM.
UEFI ARM Mirror
If this feature is set to Enable, mirror mode configuration settings for UEFI-based Address
Range memory will be activated upon system boot. This will create a duplicate copy of data
stored in the memory to increase memory security, but it will reduce the memory capacity
into half. The options are Disable and Enable.
Memory Rank Sparing
Select Enable to support memory-rank sparing to optimize memory performance. The
options are Enable and Disable.
Note: This item will not be available when memory mirror mode is enabled.
Correctable Error Threshold
Use this item to enter the threshold value for correctable memory errors. The default setting
is 10.
SDDC Plus One
Select Enable for SDDC (Single Device Data Correction) Plus One support, which will
increase the reliability and serviceability of your system memory. The options are Enable
and Disable.
ADDDC (Adaptive Double Device Data Correction) Sparing
Select Enable for ADDDC sparing support to enhance memory performance. The options
are Enable and Disable.
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