A physical domain (PDomain) operates like an independent server that has full hardware isolation from other PDomains in the server. A hardware or software failure on one PDomain does not affect the other PDomains on a server.
You can divide the server into one to four PDomains, depending on your application requirements. For example, you can divide the server into four PDomains, each running its own applications. Or, you can configure the server into one PDomain to provide all of the hardware resources to a single set of applications.
The server comes preconfigured as one PDomain (not bounded), containing all of the hardware resources.
There are two types of PDomains:
For an animated overview of physical domains, refer to Physical Domains and Multilayered Virtualization in Oracle's SPARC M5-32 and SPARC M6-32 Servers animation