Beginners Guide to Sun Logical Domains (Ldoms): Introduction. This guide is intended to assist you in gaining an understanding of how to easily and effectively deploy Sun Logical Domains (Ldom) technology. It will help you determine how and where to use logical domains to the greatest effect using best practices.

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What Are Logical Domains?
Sun Microsystems’ Logical Domains, or LDoms, technology is part of a suite of methodologies for consolidation and resource management that includes Sun Fire Dynamic System Domains and Solaris OS Containers, of which resource control and operating system virtualization are a subset. This technology allows you, the user, to allocate a system’s various resources, such as memory, CPUs, and devices, into logical groupings and create multiple, discrete systems, each with their own operating system, resources, and identity within a single computer system. By careful architecture, a logical domains environment can help you achieve greater resource usage, better scaling, and increased security and isolation.