Oracle X5-4 Service Manual page 159

Call Out
0 - 11
B
A
C0
C1
Troubleshooting a Multi-DIMM Failure State
A multi-DIMM failure state is when a single DIMM failure causes other DIMMs in the same
channel or a second channel on a memory riser card to become disabled or appear as if they
have failed.
When a DIMM failure occurs, check the Oracle ILOM system event log (SEL) to:
Identify the first DIMM that failed.
■
Note any additional DIMM failures occurring closely after the initial DIMM failure.
■
Identify the memory riser card that contains the failed DIMM.
■
Note the channel(s) in which any additional DIMM failures have occurred.
■
If another DIMM (or DIMMs) has failed after the initial occurrence of a single DIMM failure,
and, if the DIMM failure is on the same memory riser card, then the server might be in multi-
DIMM failure state.
For example, you might see the following in the system error log:
Description
DIMM slot numbers. Board labeling prepends a "D" to the slot number (for
example: D0–D11).
Channel B slots: D0–D2 for memory buffer 0; D6–D8 for memory buffer 1.
Channel A slots: D3–D5 for memory buffer 0; D9–D11 for memory buffer 1.
Memory buffer 0.
Memory buffer 1.
Install a Memory Riser Card
Servicing CRU Components 159