Mirroring And Dell Fault Resilient Memory; Dell Fault Resilient Memory - Dell PowerEdge R920 Technical Manual

For information on memory mirroring and sparing configurations, see the Dell PowerEdge R920
Owner's Manual on Dell.com/Support/Manuals.
Mirroring and Dell Fault Resilient Memory
The PowerEdge R920 supports memory mirroring. Partial mirroring is enabled through Dell Fault
Resilient Memory (FRM). Available on Dell PowerEdge 12th generation servers, FRM establishes an
area of memory that is fault resilient and can be used by an operating system supporting the FRM
feature to load critical applications and maximize system availability.
Benefits:
Creates a highly resilient memory zone for the hypervisor, protecting it from all but the most
severe memory errors.
With VMware

, vSphere v5.5, FRM provide the hypervisor with strong protection from memory faults that
would otherwise bring down the entire system. When used in conjunction with other Dell
PowerEdge reliability and redundancy features for virtualization — such as the internal dual
SD modules — it creates a highly reliable VMware virtualization server environment with high
availability and uptime.
19 |
Dell PowerEdge Technical Guide

Figure 5. Dell Fault Resilient Memory