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I'm trying to upgrade RAM in a Sun T5120 server, replacing 2GB (Sun P/N: 501-7953-01) with 8GB DIMMs (Sun P/N: 511-1262-01).

When bringing up the host system, I get the following errors on the ILOM:

-> show faulty
Target              | Property               | Value                           
--------------------+------------------------+---------------------------------
/SP/faultmgmt/0     | fru                    | /SYS/MB                         
/SP/faultmgmt/0/    | timestamp              | Dec 14 15:29:42                 
 faults/0           |                        |                                 
/SP/faultmgmt/0/    | sp_detected_fault      | /SYS/MB/CMP0/MCU3 Forced fail   
 faults/0           |                        | (IBIST)                         
/SP/faultmgmt/0/    | timestamp              | Dec 14 15:29:28                 
 faults/1           |                        |                                 
/SP/faultmgmt/0/    | sp_detected_fault      | /SYS/MB/CMP0/MCU2 Forced fail   
 faults/1           |                        | (IBIST)                         
/SP/faultmgmt/0/    | timestamp              | Dec 14 15:29:13                 
 faults/2           |                        |                                 
/SP/faultmgmt/0/    | sp_detected_fault      | /SYS/MB/CMP0/MCU1 Forced fail   
 faults/2           |                        | (IBIST)                         
/SP/faultmgmt/0/    | timestamp              | Dec 14 15:28:59                 
 faults/3           |                        |                                 
/SP/faultmgmt/0/    | sp_detected_fault      | /SYS/MB/CMP0/MCU0 Forced fail   
 faults/3           |                        | (IBIST)                         
/SP/faultmgmt/1     | fru                    | /SYS                            
/SP/faultmgmt/1/    | timestamp              | Dec 14 15:29:42                 
 faults/0           |                        |                                 
/SP/faultmgmt/1/    | sp_detected_fault      | Dec 14 15:29:42 ERROR:          
 faults/0           |                        | Unsupported memory              
                    |                        | configuration

As you can see, the only error message I get is "Unsupported memory configuration".

Note that I'm absolutely sure that I placed in the DIMMs in the correct slots.

Might this issue be related to the Voltage of the DIMMs? Any suggestions on how to trouble-shoot this issue?

This issue seems to be similar to the one explained at "Inserted disabled" while upgrading Sun Sparc t5120 memory. However the given link http://docs.sun.com/source/820-4445-10/chapter1.html seems to point to an inexistent page...

Community
  • 1
watain
  • 151

3 Answers3

1

This is what the SUN manual has to say on T5120 memory

FB-DIMM Configuration Guidelines

Use the guidelines described in this topic when installing, upgrading, or 
replacing FB-DIMMs:

* There are a total of 16 slots that support industry-standard FB-DIMMs.
* Supported FB-DIMM capacities are 1 GByte, 2 GByte, 4 GByte, and 8 GByte.
* Valid quantities of FB-DIMMs are 4, 8, or 16.
* All FB-DIMMs in the server must be the same capacity.
* All FB-DIMMs in a branch must have the same part number.
Note - FB-DIMMs that run on 1.5V are not supported in this server. An FB-DIMM 
that runs on 1.5V is sometimes noted with an LV on the part number label. Do not
install such FB-DIMMs in this server.
user9517
  • 117,122
0

Can you detail your memory configuration please, slot by slot - you're observing the 'banks of four modules must be the same' rule right?

Chopper3
  • 101,808
0

The problem was solved quite long time ago already, but I would like to share the solution in case anybody faces the same or a similar problem.

I noticed that not all DIMMs had the same revision number, although the part number was the same for each DIMM. So I decided to try using only identical DIMMs, i.e. all of them having the same revision number. I even verified that the serial numbers were continuous from the first DIMM up to the last one. The problem disappeared after booting up the server with this memory configuration, the "unsupported memory configuration" error message was gone.

watain
  • 151