Logical Domains (LDoms) software enables you to allocate the system resources of your server (such as a boot environment, CPUs, memory, and I/O devices) into logical domains. By using a logical domains environment, you can increase resource usage, improve scaling, and gain greater control of security and isolation
LDoms software enables you to create and manage as many as 128 logical domains, depending on the hardware configuration of the server on which the Logical Domains Manager has been installed. You can virtualize resources and define network, storage, and other I/O devices as services that can be shared between domains.
A logical domain is a discrete logical grouping with its own operating system, resources, and identity within a single computer system. Applications software can run in logical domains. Each logical domain can be created, destroyed, reconfigured, and rebooted independently. There are several roles that logical domains can perform as shown in the following table.
Table 10 Logical Domain Roles