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Memory

This menu displays and provides options to change the memory setting.

Table 1. Memory
ItemOptionsDescription
System Memory Details

N/A

View the status of the system memory.

Memory Corrected Error

  • Disable

  • Enabled

Enable / disable runtime memory corrected error reporting. [Disabled] causes ADDDC Sparing, Runtime PPR and Mirror Failover to not take effect.

When a preset workload profile is selected, the low-level settings are not changeable. If user would like to change the low-level settings, select [Custom] in "Workload Profile" located under "System Settings" submenu and then change individual settings as desired.

ADDDC Sparing

  • Disabled(Default)

  • Enabled

Adaptive Double Device Data Correction (ADDDC) Sparing is a RAS function that provides more reliability of memory error correction in virtual lockstep mode.

Note

  • ADDDC Sparing will not take effect if the system has x8 DIMMs.

  • This setting is [Disabled] and grayed out when full mirror or partial mirror is enabled. You can access the mirror setting by Memory > Mirror Configuration > Full Mirror or Memory > Mirror Configuration > Partial Mirror.

Page Policy

  • Closed

    (Default)

  • Adaptive

Page Policy setting determines whether the memory controller keeps the last accessed page open.

  • [Adaptive]: Improves performance for applications with a highly localized memory access pattern.

  • [Closed]: Benefits applications that access memory more randomly.

DDR MBIST

  • Disabled

    (Default)

  • Enabled

Enable or disable DDR Memory Built-In Self-Test (MBIST).

DRAM Post Package Repair

  • Enabled(Default)

  • Disabled

Enable or disable DRAM Post Package Repair (PRR).

Memory Test

  • Disabled

  • Enabled (Default)

Enable or disable memory test during normal boot.

Runtime PPR/Row Sparing

  • Disabled

    (Default)

  • Enabled

Enable or disable runtime PRR/Row Sparing.

Note
This item is not available for Intel Xeon 6 processors (formerly codenamed "Sierra Forest").
Cold Boot Fast

  • Disabled

  • Enabled (Default)

Enable or disable Cold Boot Fast.

AC Boot Fast

  • Disabled

  • Enabled (Default)

Enable or disable AC Boot Fast which is for AC boot only.

Note
This item is available and functional only when Cold Boot Fast is enabled.
Global Data Scrambling

  • Disabled

  • Enabled (Default)

Memory traffic on the data bus is not random and can cause current “hot spots” on the DIMM. Memory data scrambling uses a data scrambling feature in the memory controller to create pseudo-random patterns on the data bus to reduce the possibility of data-bit errors due to the impact of excessive current fluctuations.

Patrol Scrub

  • Disabled

  • Enabled (Default)

Enable/Disable “Patrol Scrub” which proactively searches the system memory to repair correctable errors. When [Enabled] is selected, Patrol Scrub would take effect at the end of POST.

When a preset workload profile is selected, the low-level settings are not changeable. If user would like to change the low-level settings, select [Custom] in “Workload Profile” located under “System Settings” submenu and then change individual settings as desired.

Socket Interleave

  • NUMA (Default)

  • Non-NUMA

Socket interleave determines how the memory map will be laid out within the system. Memory is either laid out such that each CPU has a map of local attached memory (NUMA) or in a flat memory model with no NUMA nodes (Non-NUMA).

  • [NUMA]: Memory is not interleaved across processors.

  • [Non-NUMA]: Memory is interleaved across processors.

Note

  • This item is hidden if:

    • CPU is SRF, CWF or GNR (LCC/UCC) SKU.

  • This item is read only if:

    • SGX is enabled.

    • Only 1 or 4 CPU sockets are enabled or NUMA is unsupported.

Dynamic ECC Mode Selection

  • Disabled

  • Enabled (Default)

Enable or disable dynamic ECC mode selection.

Memory Speed

  • Maximum Performance (Default)

  • Balanced

  • Minimal Power

Select the desired memory speed.

  • [Maximum Performance] mode maximizes performance.

  • [Balanced] mode offers a balance between performance and power.

  • [Minimal Power] mode maximizes power savings.

When a preset workload profile is selected, the low-level settings are not changeable and is grayed out. To change the setting, select System Settings > Workload Profile > Custom first. Then, you can change this setting.

DDR5 ECS

  • Disabled

  • Enabled (Default)

  • Enable ECS with Result Collection

The Error Check and Scrub (ECS) function allows early detection of possible DRAM failures to avoid or reduce downtime.

  • [Disabled]: Disables the ECS function.

  • [Enabled]: Enables ECS without result collection.

  • [Enable ECS with Result Collection]: Enables ECS with result collection.

Mirror Configuration

N/A

View and configure the memory mirror state.

Note
This item can be configured only when ADDDC Sparing is disabled and memory population meets the requirements.
CXL Memory Module

N/A

CXL Memory Module (CMM) information, status and configuration.