M10-1 Unable to Power On Domain: SCF:no MEM on PSB#00-0

Asset ID:	1-72-1963836.1
Update Date:	2018-04-05
Keywords:

Solution Type Problem Resolution Sure

Solution 1963836.1 : M10-1 Unable to Power On Domain: SCF:no MEM on PSB#00-0

Applies to:

Fujitsu M10-1 - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

Platform SPARC M10-1
All the memory is deconfigured and the PSB cannot be powered on

XSCF> showstatus

* MBU Status:Deconfigured;
* CPU#0 Status:Deconfigured;
* MEM#00A Status:Deconfigured;
* MEM#01A Status:Deconfigured;
* MEM#02A Status:Deconfigured;
* MEM#03A Status:Deconfigured;
* PSUBP Status:Deconfigured

The only messages is there is no memory available on the PSB

XSCF> showlogs monitor -r

Jan 21 10:35:11 m10-1a Event: SCF:no MEM on PSB#00-0

Showboards reports that there hs a fault and the test shows failed, but there no faults reported in the error log.

XSCF> showboards -va

PSB R PPAR-ID(LSB) Assignment Pwr Conn Conf Test Fault
---- - ------------ ----------- ---- ---- ---- ------- --------
00-0 * 00(00) Assigned n n n Failed Faulted

Check the memory mirror mode status we can see it has been turned on

XSCF> showfru -a

Device    Location     Memory Mirror Mode
sb        00-0
    cpu   00-0-0       yes

Changes

XSCF> showlogs event -vr

Event: SCF:CMU#00-0: SB configuration changed (CPU#0 memory mirror mode on)

Cause

Mirrored memory mode had been turned on, but the platform does not have sufficient DIMMs installed to support it.

Only 4 DIMMs installed
* MEM#00A Status:Deconfigured;
* MEM#01A Status:Deconfigured;
* MEM#02A Status:Deconfigured;
* MEM#03A Status:Deconfigured;

To mirror memory on the M10-1, 8 or 16 DIMMs are required.

http://www.fujitsu.com/global/products/computing/servers/unix/sparc/downloads/manuals/m10-1/en/index.html

Section 2.2.1 - Memory installation rules

For a redundant configuration, install 8 or 16 memory modules and install the memory modules of the same capacity and rank for memory groups A and B.

Solution

There are not the required DIMMs installed in the platform to support memory mirroring, turning this mode off should resolve the issue.

To turn off memory mirroring

XSCF> setupfru -m n sb 00-0
or
XSCF> setupfru -m n cpu 00-0-0

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