Oracle SPARC M8 Service Manual page 82

SPARC M7-16 Configurations and Failover Behavior
DCU Managed
Oracle ILOM identifies one of these SPMs as a DCU SPM to manage DCU activity. The other
SPM runs Oracle ILOM, but remains inactive unless the DCU SPM can no longer manage the
hardware. In this case, the inactive SPM assumes the role of the DCU SPM.
Oracle ILOM also identifies one of the DCU SPMs from the pool of DCU SPMs on the same
PDomain as the PDomain SPM to manage activity on that host.
You cannot specify which SPMs will serve as DCU SPMs or the PDomain SPM, but you can
specify that Oracle ILOM should assign a new SPM to serve each role. You might do this when,
for example, you are replacing an SPP.
The switch chassis in the SPARC M7-16 server contains six switch units that allow CMIOUs to
communicate with each other. The switch chassis also has two SPs (SP0 and SP1) that manage
system resources. Each SP in the switch chassis has a single SPM (SPM0 in each SP). The SPM
that you identify as the Active SP manages system resources unless it can no longer do so, in
which case the Standby SP assumes its role.
Note -
that contains it.
Related Information
"Determine Which SP Is Managing System Activity" on page 123
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"Determine Which SPP Is Managing DCU Activity (SPARC M7-16)" on page 124
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"Change Which SP Is Managing System Activity" on page 124
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"Change Which SPP Is Managing DCU Activity (SPARC M7-16)" on page 125
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"Oracle ILOM Paths for SPMs" on page 122
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82 SPARC M8 and SPARC M7 Servers Service Manual • September 2017
CMIOUs Assigned
SPMs are not serviceable components. If an SPM fails, you must replace the SP or SPP
Assigned SPM Pairs
/SYS/SPP3/SPM1