Concept Guide

17 Memory Errors and Dell PowerEdge YX4X Server Memory RAS Features
location (note that BIOS may initiate more reboots during this process). Do not remove
or swap the DIMM at the specified location in the event message.
• MEM0804 – This is an indication that the system has successfully performed memory-self
healing at the specified DIMM location in the event message.
o Recommended Response Action: No response required. DIMM is operating nominally.
• MEM0805 – This is an indication that the system is unable to successfully perform memory self-
healing at the specified DIMM location in the event message.
o Recommended Response Action: Contact Dell technical support.
• MEM8000 – This is an indication that the system is encountering correctable errors at a rate and
pattern that may impact system performance. To preserve maximum performance, correctable
error logging has been temporarily disabled at the specified DIMM location. See “What’s New in
BIOS 2.8.2” for additional background and improvements regarding this event.
o Recommended Response Action: Reseat the DIMM identified by the SEL message. Do
not swap or move the identified DIMM to a new location. The system may also attempt
to initiate the self-healing process. If the problem persists, contact Dell technical
support.
• MEM9072 – This is an indication that the system has detected an uncorrectable memory error
in a non-execution code path (during Patrol Scrub or CPU prefetch). Without user action, the
corrupted data can still be later consumed and may generate a service outage.
o Recommended Response: Perform a cold reboot of the server as soon as possible.
PowerEdge server BIOS will perform self-healing at the affected DIMM location (note
that BIOS may initiate more reboots during this process). Do not remove or swap the
DIMM at the specified location in the event message. Look for the system to report
MEM0804 or MEM0805 for next steps. Contact Dell technical support if neither of these
two events are reported.
Applicable Platforms
The following platforms are considered PowerEdge YX4X servers with Xeon SP processors and are
therefore covered by this document:
Important: Subsequent to the publication of this document, Dell may continue to
add products to its YX4X server lineup. If a product is not listed below, please
consult with a Dell sales or support representative to confirm the server
generation.
Additionally, PowerEdge leveraged products such as some Precision workstations,
OEM, DSS, and ESI products may also be covered by this document. Please consult
with a Dell sales or support representative to confirm.
• PowerEdge T440
• PowerEdge T640
• PowerEdge C4140
• PowerEdge C6420