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Brand new T5220, ILOM says MCU0 enabled, OBP says MCU0 disabled

I've got a brand new T5220 with four 2GB FB-DIMMs in it. Initially it had eight 2GB FB-DIMMs in it, but they weren't all the same part number and ILOM would report that the box was working in a degraded memory condition. It would not even allow an OS to be installed. Sun documentation states that all FB-DIMMS in a branch must have the same identical part number, although I am not certain what a 'branch' refers to in this server.

So, I removed the second set of different FB-DIMMs that had been added after the box was purchased. This left the original four 2GB FB-DIMMs with identical part numbers (M395T5663QZ4 by Samsung).

The above change removed the error message about the box working in a degraded memory condition. And, from the ILOM prompt, /SYS/MB/CMP0/MCU0 says it is enabled. In fact, everything shows enabled. But, when the box is powered on, just before you get the OK prompt, there is a message from the OBP that says that /SYS/MB/CMP0/MCU0 is disabled. At this point you can go back into the ILOM and you will see that MCU0 still says enabled.

Why are these reporting oppositely? It isn't as thought I can go into the ILOM and mark MCU0 as enabled--it already IS enabled. There is a SUN patch for the firmware that talks about this problem (136932-10) but the version of OBP that the patch brings the OBP to is lower than the OBP is right now.

If you answer, keep in mind that there is no OS installed on the box, yet.

SOLUTION

arnold

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SOLUTION

Rowley

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cbecker001

ASKER

Arnold:

There are four banks: 0,1,2,3 At present, there are only four FB-DIMMs with the part number I listed in the opening paragraph in bank 0. The memory added to the server later has been removed while troubleshooting this problem. There is more memory identical to the memory in the server now being delivered this morning. I won't have access to the server until about 10:30 am central time.

cbecker001

ASKER

Rowley:

I have some output from the box now. When you cycle the box you get the following:

============================================================
{0} ok reset-all

SPARC Enterprise T5220, No Keyboard
Copyright 2009 Sun Microsystems, Inc. All rights reserved.
OpenBoot 4.30.2.b, 3968 MB memory available, Serial #1234567.
Ethernet address 0:12:34:56:78:90, Host ID: 12345678.

ERROR: The following devices are disabled:
MB/CMP0/MCU0

{0} ok
============================================================

But then, if you switch over to the ILOM prompt, every component shows 'enabled':

============================================================

-> show -level all -o table component_state
Target | Property | Value
--------------------+------------------------+---------------------------------
/SYS/MB/RISER0/ | component_state | Enabled
PCIE0 | |
/SYS/MB/RISER0/ | component_state | Enabled
PCIE3 | |
/SYS/MB/RISER1/ | component_state | Enabled
PCIE1 | |
/SYS/MB/RISER1/ | component_state | Enabled
PCIE4 | |
/SYS/MB/RISER2/ | component_state | Enabled
PCIE2 | |
/SYS/MB/RISER2/ | component_state | Enabled
PCIE5 | |
/SYS/MB/GBE0 | component_state | Enabled
/SYS/MB/GBE1 | component_state | Enabled
/SYS/MB/PCIE | component_state | Enabled
/SYS/MB/PCIE-IO/ | component_state | Enabled
USB | |
/SYS/MB/SASHBA | component_state | Enabled
/SYS/MB/CMP0/NIU0 | component_state | Enabled
/SYS/MB/CMP0/NIU1 | component_state | Enabled
/SYS/MB/CMP0/MCU0 | component_state | Enabled
/SYS/MB/CMP0/MCU1 | component_state | Enabled
/SYS/MB/CMP0/MCU2 | component_state | Enabled
/SYS/MB/CMP0/MCU3 | component_state | Enabled
/SYS/MB/CMP0/ | component_state | Enabled
L2_BANK0 | |
/SYS/MB/CMP0/ | component_state | Enabled
L2_BANK1 | |
/SYS/MB/CMP0/ | component_state | Enabled
L2_BANK2 | |
/SYS/MB/CMP0/ | component_state | Enabled
L2_BANK3 | |
/SYS/MB/CMP0/ | component_state | Enabled
L2_BANK4 | |
/SYS/MB/CMP0/ | component_state | Enabled
L2_BANK5 | |
/SYS/MB/CMP0/ | component_state | Enabled
L2_BANK6 | |
/SYS/MB/CMP0/ | component_state | Enabled
L2_BANK7 | |
/SYS/MB/CMP0/BR0/ | component_state | Enabled
CH0/D0 | |
/SYS/MB/CMP0/BR1/ | component_state | Enabled
CH0/D0 | |
/SYS/MB/CMP0/BR2/ | component_state | Enabled
CH0/D0 | |
/SYS/MB/CMP0/BR3/ | component_state | Enabled
CH0/D0 | |
/SYS/MB/CMP0/P0 | component_state | Enabled
/SYS/MB/CMP0/P1 | component_state | Enabled
/SYS/MB/CMP0/P2 | component_state | Enabled
/SYS/MB/CMP0/P3 | component_state | Enabled
/SYS/MB/CMP0/P4 | component_state | Enabled
/SYS/MB/CMP0/P5 | component_state | Enabled
/SYS/MB/CMP0/P6 | component_state | Enabled
/SYS/MB/CMP0/P7 | component_state | Enabled
/SYS/MB/CMP0/P8 | component_state | Enabled
/SYS/MB/CMP0/P9 | component_state | Enabled
/SYS/MB/CMP0/P10 | component_state | Enabled
/SYS/MB/CMP0/P11 | component_state | Enabled
/SYS/MB/CMP0/P12 | component_state | Enabled
/SYS/MB/CMP0/P13 | component_state | Enabled
/SYS/MB/CMP0/P14 | component_state | Enabled
/SYS/MB/CMP0/P15 | component_state | Enabled
/SYS/MB/CMP0/P16 | component_state | Enabled
/SYS/MB/CMP0/P17 | component_state | Enabled
/SYS/MB/CMP0/P18 | component_state | Enabled
/SYS/MB/CMP0/P19 | component_state | Enabled
/SYS/MB/CMP0/P20 | component_state | Enabled
/SYS/MB/CMP0/P21 | component_state | Enabled
/SYS/MB/CMP0/P22 | component_state | Enabled
/SYS/MB/CMP0/P23 | component_state | Enabled
/SYS/MB/CMP0/P32 | component_state | Enabled
/SYS/MB/CMP0/P33 | component_state | Enabled
/SYS/MB/CMP0/P34 | component_state | Enabled
/SYS/MB/CMP0/P35 | component_state | Enabled
/SYS/MB/CMP0/P36 | component_state | Enabled
/SYS/MB/CMP0/P37 | component_state | Enabled
/SYS/MB/CMP0/P38 | component_state | Enabled
/SYS/MB/CMP0/P39 | component_state | Enabled
/SYS/TTYA | component_state | Enabled

============================================================

So, I don't see that your suggestion would work unless I'm missing something.

Rowley

OK. If you try and clear the fault, do you get a message back saying there is no fault on that device or something else? Does show faulty return anything? What about trying to disable and enable the component from the SC?

sc> enablecomponent /SYS/MB/CMP0/MCU0

Again, if this is brand new don't waste your own and your companies time, get straight onto your vendor for support.

cbecker001

ASKER

Rowley,

I don't have access to the box right now, but I'll try that and post the results after I try that.

arnold

The ILOM may indicate the setting while the OBP is indicating the state of the device.

The memory installation seems to be to use alternating memory slots.
as others asked, is the installed memory came in this form?

In which bank did you add the other four among the four from a different part number. It could be that the four are designed for a different model and are incompatible with this hardware. I.e. if you swap the four that you have with the additional four that you bough, is the error still there?
The FBDIMMS your system needs match in the slot design, but are not compatible with the DDR2 memory chips that are available for the earlier model, T5120.
Check the part number with SUN/Oracle to see whether it is suitable for your system.

ASKER CERTIFIED SOLUTION

cbecker001

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cbecker001

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I think I used the wrong option to close the question. I want to accept my answer as the solution but give points to the Experts for their assistance. I need this question opened back up so I can close it the way I intended to.