White Papers

7
Dell EMC Fault Resilient Memory
Introduction to Dell Fault Resilient Memory (FRM)
The below screenshot is taken from a Dell EMC PowerEdge R840 indicating the BIOS token to enable FRM in
server BIOS.
Figure 1 : Enabling FRM Memory Operating Mode in the BIOS
1.6 Verifying ReM from VMware ESXi
VMware ESXi 5.5 and later versions enables Reliable Memory (ReM) by default (for supported versions -
Enterprise, Enterprise Plus). The user does not have to make any configuration changes in ESXi to enable
ReM. There are few utilities in VMware, that provides the status of the reliable memory region. For example,
the command: esxcli sched reliablemem get, mentioned in the below screenshot indicates that the system is
FRM/ReM enabled or not. A value of true (set by default) indicates that the feature is enabled.
Figure 2 : FRM Token in ESXi
1.7 Validate Fault Resilient Memory reservations in VMware ESXi
This section briefs about ESXi commands which helps the end users to understand and configure FRM
accordingly.
The command: esxcli system settings kernel list | grep useReliableMem indicates the status
of kernel parameter useReliableMem. By default, this parameter is set to TRUE.
Note: It is recommended that end user do not change this setting unless instructed by Dell EMC or VMware for
any debugging purpose.