Domain; Resource Management; Section 2.2, "Domain; Section 2.3, "Resource Management - Fujitsu Sun Oracle SPARC Enterprise M3000 Overview Manual

2.2

Domain

The function that divides one server into multiple independent systems is called
partitioning. The partitioning function enables arbitrary assignment of resources in
the server according to the job load or processing amount. Individual systems thus
divided are referred to as domains. Each domain runs on an independent Oracle
Solaris OS.
However, the M3000 server does not support the partitioning function and,
therefore, the server cannot be divided into multiple domains. All resources in the
server are allocated to a single domain that is preconfigured.
The basic hardware resource making up a domain is called the physical system
board (PSB). The physical units (CPU, memory, I/O) making up the PSB are
logically divided, and each divided configuration unit is called the extended system
board (XSB). The types of XSB include the XSB making up a PSB not logically
divided into multiple parts (Uni-XSB), and each XSB making up a PSB logically
divided into four parts (Quad-XSB).
The PSB mounted in the M3000 server has one Uni-XSB. Because the system is not
divided, there is only one domain.
For details on the domain, see the SPARC Enterprise
M3000/M4000/M5000/M8000/M9000 Servers Administration Guide.
2.3

Resource Management

This section explains the Oracle Solaris Zone function that supports reconfiguration
of domain resources during system operation.
The Oracle Solaris OS has a function called Oracle Solaris Zone, which divides
processing resources and allocates them to applications. The Oracle Solaris Zone
provides flexible resource allocation, which enables optimal resource management
with consideration given to the processing load.
In a domain, resources can be divided into sections called containers. The
processing sections are allocated to each application. The processing resources are
managed independently in each container. If a problem occurs in a container, the
container can be isolated so that it does not affect other containers.
Chapter 2 System Functions 2-3