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Option
Description
System Memory
Specifies whether the system memory tests are run during system boot. Options are Enabled and
Testing
Disabled. This option is set to Disabled by default.
Dram Refresh
By enabling the CPU memory controller to delay running the REFRESH commands, you can improve
Delay
the performance for some workloads. By minimizing the delay time, it is ensured that the memory
controller runs the REFRESH command at regular intervals. For lntel-based servers, this setting only
affects systems configured with DIMMs which use 8 Gb density DRAMS.
Memory
Specifies the memory operating mode. The options available are Optimizer Mode, Single Rank Spare
Operating Mode
Mode, Multi Rank Spare Mode, Mirror Mode, and Dell Fault Resilient Mode. This option is set to
Optimizer Mode by default.
Current State
Specifies the current state of the memory operating mode.
of Memory
Operating Mode
Fault Resilient
Select to define the percent of total memory size that must be used by the fault resilient mode when
Mode Memory
selected in the Memory Operating mode. When Fault Resilient Mode is not selected, this option is
Size [%]
grayed out and not used by Fault Resilient Mode.
Node Interleaving Specifies if Non-Uniform Memory Architecture (NUMA) is supported. If this field is set to Enabled,
memory interleaving is supported if a symmetric memory configuration is installed. If the field is set
to Disabled, the system supports NUMA (asymmetric) memory configurations. This option is set to
Disabled by default.
ADDDC Setting
Enables or disables ADDDC Setting feature. When Adaptive Double DRAM Device Correction (ADDDC)
is enabled, failing DRAMs are dynamically mapped out. When set to Enabled it can have some impact to
system performance under certain workloads. This feature is applicable for x4 DIMMs only. This option is
set to Enabled by default.
Native tRFC
Enables 16 Gb density DIMMs to operate at their programmed Row Refresh Cycle Time (tRFC). Enabling
Timing for 16Gb
this feature may improve system performance for some configurations. However, enabling this feature will
DIMMs
have no effect on configurations with 16 Gb 3DS/TSV DIMMs. This option is set to Enabled by default.
Opportunistic
Enables or disables opportunistic self-refresh feature. This option is set to Disabled by default.
Self-Refresh
Correctable Error
Enables or disables logging of correctable memory threshold error. This option is set to Disabled by
Logging
default.
DIMM Self
Enable/Disable Post Package Repair (PPR) on Uncorrectable Memory Error. This option is set to Enabled
Healing (Post
by default.
Package Repair)
on Uncorrectable
Memory Error
Persistent
This field controls Persistent Memory on the system. This option is available if the persistent memory
Memory
module is installed in the system.
8
BIOS and UEFI
NOTE:
When Enabled the system takes more to boot. The booting time depends on the size of the
system memory.
NOTE:
The Memory Operating Mode option can have different default and available options based
on the memory configuration of your system.
NOTE:
The Fault Resilient Mode option establishes an area of memory that is fault resilient. This
mode can be used by an operating system that supports the feature to load critical applications or
enables the operating system kernel to maximize system availability.
NOTE:
Only Optimizer Mode should be selected when Intel DC Optane Persistent Memory is
installed.