Lenovo ThinkSystem SR650 Series Setup Manual page 209

Where 20 stands for the percentage of capacity that is invested in system volatile memory.
3. Set the DCPMM mode.
onecli.exe config set IntelOptaneDCPMM.PersistentMemoryType "App Direct"
--imm USERID:PASSW0RD@10.104.195.86
Where App Direct stands for the DCPMM mode.
– Persistent Memory Type
In App Direct Mode and Mixed Memory Mode, the DCPMMs that are connected to the same processor
are by default interleaved (displayed as App Direct), while memory banks are used in turns. To set
them as not interleaved in the Setup Utility, go to Intel Optane DCPMMs ➙ Goals ➙ Persistent
Memory Type [(DCPMM mode)], select App Direct Not Interleaved and reboot the system.
Note: Setting DCPMM App Direct capacity to not interleaved will turn the displayed App Direct regions
from one region per processor to one region per DCPMM.
• Regions
After the memory percentage is set and the system is rebooted, regions for the App Direct capacity will be
generated automatically. Select this option to view the App Direct regions.
• Namespaces
App Direct capacity of DCPMMs requires the following steps before it is truly available for applications.
1. Namespaces must be created for region capacity allocation.
2. Filesystem must be created and formatted for the namespaces in the operating system.
Each App Direct region can be allocated into one namespace. Create namespaces in the following
operating systems:
– Windows: Use Pmem command.
– Linux: Use ndctl command.
– VMware: Reboot the system, and VMware will create namespaces automatically.
After creating namespaces for App Direct capacity allocation, make sure to create and format filesystem
in the operating system so that the App Direct capacity is accessible for applications.
• Security
– Enable Security
Attention: By default, DCPMM security is disabled. Before enabling security, make sure all the country
or local legal requirements regarding data encryption and trade compliance are met. Violation could
cause legal issues.
DCPMMs can be secured with passphrases. Two types of passphrase protection scope are available
for DCPMM:
– Platform: Choose this option to run security operation on all the installed DCPMM units at once. A
platform passphrase is stored and automatically applied to unlock DCPMMs before operating
system starts running, but the passphrase still has to be disabled manually for secure erase.
Alternatively, enable/disable platform level security with the following commands in OneCLI:
• Enable security:
1. Enable security.
onecli.exe config set IntelOptaneDCPMM.SecurityOperation "Enable Security"
--imm USERID:PASSW0RD@10.104.195.86
.
Chapter 4 System configuration
205