Dell PowerEdge MX840c EMC PowerEdge MX840c Installation and Service Manual - Page 22

Persistent Memory details, Dell Fault Resilient Mode

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Option Video Memory System Memory Testing Description Specifies the amount of video memory. Specifies whether the system memory tests are run during system boot. Options are Enabled and Disabled. This option is set to Disabled by default. NOTE: When Enabled the system takes more to boot. The booting time depends on the size of the system memory. Native tRFC Timing for 16Gb DIMMs Memory Operating Mode Enables 16 Gb density DIMMs to operate at their programmed Row Refresh Cycle Time (tRFC). Enabling this feature may improve system performance for some configurations. However, enabling this feature will have no effect on configurations with 16 Gb 3DS/TSV DIMMs. This option is set to Enabled by default. Specifies the memory operating mode. The options available are Optimizer Mode, Single Rank Spare Mode, Multi Rank Spare Mode, Mirror Mode, and Dell Fault Resilient Mode. This option is set to Optimizer Mode by default. 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. Current State of Specifies the current state of the memory operating mode. Memory Operating 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. Correctable Error Enables or disables logging of correctable memory threshold error. This option is set to Enabled by Logging default. Opportunistic Self-Refresh Enables or disables opportunistic self-refresh feature. This option is set to Disabled by default. Persistent Memory This field controls Persistent Memory on the system. This option is available if the persistent memory module is installed in the system. Persistent Memory details About this task The Persistent Memory screen details are explained as follows: Option Description Persistent Memory Persistent Memory Scrubbing Enables or disables persistency for NVDIMM-N. If this option is set to Off, persistency for all NVDIMM-N is disabled and is not presented to operating system (data is not preserved). If this option is set to NonVolatile DIMM, persistency for all NVDIMM-N is enabled and presented to operating system (data is preserved). This option is set to Non-Volatile DIMM by default. Enables scrubbing of persistent memory during POST. 22 Pre-operating system management applications

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Option
Description
Video Memory
Specifies the amount of video memory.
System Memory
Testing
Specifies whether the system memory tests are run during system boot. Options are
Enabled
and
Disabled
. This option is set to
Disabled
by default.
NOTE:
When
Enabled
the system takes more to boot. The booting time depends on the size of the
system memory.
Native tRFC
Timing for 16Gb
DIMMs
Enables 16 Gb density DIMMs to operate at their programmed Row Refresh Cycle Time (tRFC). Enabling
this feature may improve system performance for some configurations. However, enabling this feature will
have no effect on configurations with 16 Gb 3DS/TSV DIMMs. This option is set to
Enabled
by default.
Memory
Operating Mode
Specifies the memory operating mode. The options available are
Optimizer Mode
,
Single Rank Spare
Mode
,
Multi Rank Spare Mode
,
Mirror Mode
, and
Dell Fault Resilient Mode
. This option is set to
Optimizer Mode
by default.
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.
Current State of
Memory
Operating Mode
Specifies the current state of the memory operating 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.
Correctable Error
Logging
Enables or disables logging of correctable memory threshold error. This option is set to
Enabled
by
default.
Opportunistic
Self-Refresh
Enables or disables opportunistic self-refresh feature. This option is set to
Disabled
by default.
Persistent
Memory
This field controls Persistent Memory on the system. This option is available if the persistent memory
module is installed in the system.
Persistent Memory details
About this task
The
Persistent Memory
screen details are explained as follows:
Option
Description
Persistent
Memory
Enables or disables persistency for NVDIMM-N. If this option is set to
Off
, persistency for all NVDIMM-N
is disabled and is not presented to operating system (data is not preserved). If this option is set to
Non-
Volatile DIMM
, persistency for all NVDIMM-N is enabled and presented to operating system (data is
preserved). This option is set to
Non-Volatile DIMM
by default.
Persistent
Memory
Scrubbing
Enables scrubbing of persistent memory during POST.
22
Pre-operating system management applications