Understanding Server Configurations and
Failover Behavior
PDomains and DCUs are logical units, not physical components, that you can configure
depending on how you want to isolate applications and data to satisfy particular business
requirements.
These topics describe how components, particularly CMIOUs, are assigned to PDomains and
DCUs, and how SPs manage system activity.
■
“SPARC M8-8 and SPARC M7-8 Configurations and Failover Behavior (Two
PDomains)” on page 80
■
“SPARC M8-8 and SPARC M7-8 Configurations and Failover Behavior (One
PDomain)” on page 81
■
“SPARC M7-16 Configurations and Failover Behavior” on page 81
For information about determining DCU assignment to a PDomain, determining CMIOU
membership to a DCU, or to administer DCUs and CMIOUs, refer to the SPARC M8 and
SPARC M7 Servers Administration Guide.
Related Information
■
“Identifying Components” on page 15
■
“Detecting and Managing Faults” on page 35
■
“Preparing for Service” on page 57
■
“Controlling the Server and Domains” on page 67
Understanding Server Configurations and Failover Behavior 79
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