Each PDomain runs its own installation of Oracle Solaris, which provides commands and utilities for administration of the operating system and server. In addition, if you use Oracle VM Server for SPARC, you can create logical domains that can run their own installations of Oracle Solaris 10 or Oracle Solaris 11. Use the following links to find the documentation appropriate for your Oracle Solaris release.
Refer to the SPARC M8 and SPARC M7 Servers Product Notes for information about specific versions, guidelines, and restrictions for these releases.
The M8 and M7 servers also include a fallback miniroot image. A miniroot is a minimal root file system consisting of the Oracle Solaris software that is required to boot the OS to either install or upgrade the OS on a storage device. The fallback image is not part of the OS or firmware image. It is located in a USB device associated with the SP. For more information, see Boot Pools and Fallback Boot Images in Oracle OpenBoot 4.x Administration Guide.
The fallback image is important for systems that use IPoIB which do not have firmware that is accessible to the server. See iSCSI Devices Using IPoIB for more information.