Troubleshooting The Server Memory; Memory Dimm Load Order; Memory Subsystem Behaviors - HP Carrier-Grade rx2800 i2 Server DC User's & Service Manual

Table 27 Processor events that might illuminate SID LEDs (continued)
Diagnostic Sample IPMI Events
LEDs
Processor Type E0h, 745d:26d
BOOT_FINAL_RENDEZ_WATCHDOG_FAIL
Processors Type E0h, 83d:26d
BOOT_RENDEZ_FAILURE
Processors Type E0h, 67d:26d
BOOT_MONARCH_TIMEOUT
Processors Type E0h, 57d:26d
BOOT_INCOMPATIBLE_SLAVE
Processor Type E0h, 56d:26d
BOOT_INCOMPATIBLE_ PAL
Processors Type E0h, 34d:26d
BOOT_CPU_FAILED
Processors Type E0h, 33d:26d
BOOT_CPU_EARLY_TEST_FAIL
Processors Type 02h, 25h:71h:80h
MISSING_FRU_DEVICE

Troubleshooting the server memory

Memory DIMM load order

For a minimally loaded server, two equal-size DIMMs must be installed in the DIMM slots. For more
information, see

Memory subsystem behaviors

The processor and the integrated memory controller provides increased reliability of DIMMs. The
memory controller built into the 9300 series processor doubles memory rank error correction from
4 bytes to 8 bytes of a 128 byte cache line, during cache line misses initiated by processor cache
controllers and by DMA operations initiated by I/O devices. This feature is called double DRAM
sparing, since 2 of 72 DRAMs in any DIMM pair can fail without any loss of server performance.
Corrective action, such as DIMM/memory expander replacement, is required when a threshold is
reached for multiple double-byte errors from one or more DIMMs in the same rank. And when any
uncorrectable memory error (more than 2 bytes) or when no pair of like DIMMs is loaded in rank
82 Troubleshooting
Table 6 (page 47).
Cause Source
A watchdog SFW
timer expired
and determined
that a monarch
processor is not
responding.
A logical SFW
processor
(thread)
rendezvous
failure
The logical SFW
monarch
processor
(thread) has
timed out
A logical slave SFW
processor
(thread) is
incompatible
with logical
monarch
processor
Processor PAL SFW
incompatible
with processor
A processor SFW
failed
A logical SFW
processor
(thread) failed
early self test
No physical iLO MP
processor cores
present
Notes
Bad or slow
processor
Possible
seating or
failed
processor