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SPARC T4-2 server doesn't recognize it's Memory Risers and DIMM's (Doc ID 2348450.1)

Last updated on JANUARY 15, 2018

Applies to:

SPARC T4-2 - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.
Other Facts:
FRU id corrupt FMA message ILOM-8000-2V was found on ILOM after reseating all of it's Memory DIMM's and Risers

Symptoms

Customer reported: system poweroff without manual intervention

From POST output:
Serial console started. To stop, type #.
2018-01-12 16:42:17 0:0:0> NOTICE: Initializing TPM with:
tpm_enable = false
tpm_activate = false
tpm_forceclear = false
2018-01-12 16:42:17 0:0:0> NOTICE: TPM found: Ver 1.2, Rev 1.2, SpecLevel 2, errataRev 0, VendorId 'IFX'
2018-01-12 16:42:19 0:0:0> NOTICE: TPM initialized successfully. Current state is: disabled
2018-01-12 16:42:19 0:0:0> NOTICE: Serial#: 000000000000002a.0159ccc07d224154
2018-01-12 16:42:19 1:0:0> NOTICE: Serial#: 000000000000002a.0159ccc07d2241a6
2018-01-12 16:42:19 0:0:0> NOTICE: Version: 003e003012030607
2018-01-12 16:42:19 1:0:0> NOTICE: Version: 003e003012030607
2018-01-12 16:42:19 0:0:0> NOTICE: T4 Revision: 1.2
2018-01-12 16:42:19 1:0:0> NOTICE: T4 Revision: 1.2
2018-01-12 16:42:19 0:0:0> ERROR: Can't read BoB device type from FRUID, disabling MCUs
2018-01-12 16:42:19 0:0:0> ERROR: Can't read BoB device type from FRUID, disabling MCUs
2018-01-12 16:42:19 0:0:0> ERROR: Can't read BoB device type from FRUID, disabling MCUs
2018-01-12 16:42:20 0:0:0> ERROR: Can't read BoB device type from FRUID, disabling MCUs
2018-01-12 16:42:23 1:0:0> NOTICE: /SYS/MB/CMP1/MCU0 is disabled
2018-01-12 16:42:23 0:0:0> NOTICE: /SYS/MB/CMP0/MCU0 is disabled
2018-01-12 16:42:23 1:0:0> NOTICE: /SYS/MB/CMP1/MCU1 is disabled
2018-01-12 16:42:23 0:0:0> NOTICE: /SYS/MB/CMP0/MCU1 is disabled
2018-01-12 16:42:23 1:0:0> ERROR: Not all MCUs enabled. Unsupported Config.
2018-01-12 16:42:23 0:0:0> ERROR: Please refer to the service documentation for supported memory configurations.
2018-01-12 16:42:23 1:0:0> NOTICE: /SYS/MB/CMP1/MCU0 is disabled
2018-01-12 16:42:23 0:0:0> ERROR: Not all MCUs enabled. Unsupported Config.
2018-01-12 16:42:23 1:0:0> NOTICE: /SYS/MB/CMP1/MCU1 is disabled
2018-01-12 16:42:23 0:0:0> NOTICE: /SYS/MB/CMP0/MCU0 is disabled
2018-01-12 16:42:23 0:0:0> NOTICE: /SYS/MB/
===================

When checking the system there was no Memory Riser found or any FRU id information:

-> show -o table -level all /SYS fru_part_number
Target | Property | Value
------------------------------------------+--------------------------------------------------+-------------------------------------------------------------------------
/SYS/FANBD | fru_part_number | 7051522
/SYS/MB | fru_part_number | 7049060
/SYS/MB/SP | fru_part_number | 7054434
/SYS/MB_ENV | fru_part_number | 7024515
/SYS/PS0 | fru_part_number | 7048278
/SYS/PS1 | fru_part_number | 7048278
/SYS/SASBP | fru_part_number | 511-1246-04

Changes

 No changes were done on the system, this was an unexpected outage.

Cause

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