The SPARC M8-8 and SPARC M7-8 servers can be ordered with one or two PDomains.
A SPARC M8-8 or SPARC M7-8 server with one PDomain includes all of the processors, memory, and PCIe expansion in the chassis. In this configuration, a SPARC M8-8 or SPARC M7-8 server can use up to eight processors within its single static PDomain.
In a SPARC M8-8 or SPARC M7-8 server with two PDomains, each PDomain includes half of the possible processors, memory, and PCIe expansion slots in the chassis. In this two PDomain configuration, each static PDomain operates as a separate server within the same chassis. You can configure, reboot, or manage one static PDomain while the other static PDomain continues to operate normally.