Config = Mirror
Current State:
Redundant
UE
Fatal error
UE SEL message
identifying FBDIMM
location
DIMM Fault LED:
On for the failed pair
System Fault LED:
Amber on
Set DIMM State:
DIMM failure status = Y
DIMM disabled status = Y
For all FBDIMMs on the failed
branch / group
Set Memory RAS Redun. State:
Set Memory RAS Configuration:
No change
The system asserts an NMI when:
AMB fast reset fails on both branches.
AMB fast reset fails on alternate branch.
AMB fast reset succeeds on both branches but
memory read fails on both mirror domains /
branches.
See Section 14.2.14.4.4 for more information.
Notes:
1. The Correctable Error logging threshold for sparing configurations = Ten Correctable Errors.
2. The Correctable Error logging threshold for mirror configurations = Ten Correctable Errors.
3. Pre SFO indicates the memory state before a Spare Fail-Over event. In other words, the active DIMM ranks have not yet accumulated sufficient ECC Correctable Errors
to cross the sparing threshold and activate the hardware sparing copy engine.
4. Post SFO indicates the memory state after a Spare Fail-Over event. In other words, after the sparing copy hardware engine has copied the
contents of the active DIMM rank that has reached the Correctable Error sparing threshold to the spare rank.
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