Configure Persistent Memory Module (Pmem) - Lenovo ThinkSystem SR860 Setup Manual

https://lenovopress.com/servers/options/memory
In addition, you can take advantage of a memory configurator, which is available at the following site:
http://1config.lenovo.com/#/memory_configuration
For specific information about the required installation order of memory modules in your server based on the
system configuration and memory mode that you are implementing, see
.
Population Reference

Configure Persistent Memory Module (PMem)

Follow the instructions in this section to configure PMems and DRAM DIMMs.
PMem capacity could act as accessible persistent memory for applications or volatile system memory.
Based on the approximate percentage of PMem capacity invested in volatile system memory, the following
three operating modes are available for choice:
• App Direct Mode (0% of PMem capacity acts as system memory):
In this mode, PMems act as independent and persistent memory resources directly accessible by specific
applications, and DRAM DIMMs act as system memory.
The total displayed volatile system memory in this mode is the sum of DRAM DIMM capacity.
Notes:
– In App Direct Mode, the DRAM DIMMs that are installed can be configured to mirror mode.
– When only one PMem is installed for each processor, only not-interleaved App Direct Mode is
supported.
• Mixed Memory Mode (1-99% of PMem capacity acts as system memory):
In this mode, some percentage of PMem capacity is directly accessible to specific applications (App
Direct), while the rest serves as system memory. The App Direct part of PMem is displayed as persistent
memory, while the rest of PMem capacity is displayed as system memory. DRAM DIMMs act as cache in
this mode.
The total displayed volatile system memory in this mode is the PMem capacity that is invested in volatile
system memory.
• Memory Mode (100% of PMem capacity acts as system memory):
In this mode, PMems act as volatile system memory, while DRAM DIMMs act as cache.
The total displayed volatile system memory in this mode is the sum of PMem capacity.
PMem Management options
PMems can be managed with the following tools:
• Lenovo XClarity Provisioning Manager (LXPM)
To open LXPM, power on the system and press the key specified in the on-screen instructions as soon as
the logo screen appears.
Go to UEFI Setup ➙ System Settings ➙ Intel Optane PMems to configure and manage PMems.
For more details, see the "UEFI Setup" section in the Lenovo XClarity Provisioning Manager
documentation version compatible with your server at
frontend/lxpm_product_page.html
If a password has been set, enter the password to unlock LXPM.
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the ThinkSystem SR860 Memory
https://sysmgt.lenovofiles.com/help/topic/lxpm_
Chapter 4
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System configuration
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