Supermicro SuperServer SYS-2029U-T Series User Manual page 87

Memory Topology
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The following information will be displayed: P1 DIMMA1/P1 DIMMB1/P1 DIMMC1/P1
DIMMD1/P1 DIMME1/P1 DIMMF1
Memory RAS (Reliability_Availability_Serviceability) Configuration
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Memory RAS Configuration Setup
Use this submenu to configure the following Memory RAS settings.
Static Virtual Lockstep Mode
Select Enable to support the static virtual lockstep mode. The options are Disable
and Enable.
Mirror Mode
Use this item to select the mirror mode. The options are Disable, Mirror Mode 1LM,
and Mirror Mode 2LM. If this item is set to Mirror Mode 1LM or Mirror Mode 2LM, the
available memory capacity will be reduced by 50 percent.
UEFI ARM Mirror
Select Enable to support the UEFI-based address range mirroring with setup option.
The options are Disable and Enable.
Memory Rank Sparing
Select Enable to enable memory-sparing support for memory ranks to improve memory
performance. The options are Disable and Enable.
*If the item above "Memory Rank Sparing" is set to Enable, the following item
will be displayed:
Multi Rank Sparing
Use this feature to set the multiple rank sparing number. The default setting and the
maximum is two ranks per channel. The options are One Rank and Two Rank.
Correctable Error Threshold
Use this item to enter the threshold value for correctable memory errors. The default
setting is 10.
SDDC Plus One
Single Device Data Correction (SDDC) allows data to be reconstructed when one of
the memory devices fails on a DIMM. Use this feature to enable the SDDC support.
The options are Disable and Enable.
ADDDC Sparing
Adaptive Double Device Data Correction (ADDDC) Sparing detects the predetermined
threshold for correctable errors, copying the contents of the failing DIMM to spare
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Chapter 6: UEFI BIOS