what is LDOM and CDOM

https://blogs.oracle.com/cmt/entry/what_s_up_with_ldoms What is Hypervisor??? Hypervisor is a thin firmware layer that provides a stable virtualized machine architecture to which an operating system can be written. It resides in the flash PROM of the motherboard and act as interface between operating system and the hardware. It provides a set of support fuctions to the operating system, so that the OS does not need to know intimate details of how to perform fuctions with the hardware. What is Logical Domain??? Logical domain is a discrete logical grouping with its own operating system, resources and identity within a single computer system. Each logical domain can be created, destroyed, reconfigured, and rebooted independently, without requiring a power cycle of the server. We can run a variety of applications software in different logical domains and keep them independent of performance and security purposes. What is Logical Domains Manager??? The Logical Domains Manager is used to create and manage logical domains. There can be only one Logical Domains Manager per serer. The Logical Domains Manager maps logical domains to physical resources. What is Control Domain??? Domain in which the Logical Domain Manager runs allowing you to create and manage other logical domains and allocate virtual resources to other domains. There can be only one control domain per server. The initial domain created when installing Logical Domains software is a control domain and is named primary. What is Service Domain??? Domain that provides virtual device services to other domains, such as a virtual switch, a virtual console concentrator, and a virtual disk server. What is I/O Domain??? Domain that has direct ownership of and direct access to physical I/O devices, such as a network card in a PCI express controller. Shares the devices with other domains in the form of virtual devices when the I/O domain is also the control domain. What is Guest Domain??? Domain that is managed by the control domain and uses services from the I/O and service domains. Patch Installation Refer the Logical Domains 1.0.2 Release notes for the required patches/softwares for your OS release http://mysolarisworld.blogspot.com/p/how-to-install-and-configure-ldom.html