ogical PAR tition. A logical segmentation of a mainframe's memory and other resources that allows it to run its own copy of the operating system and associated applications. See also virtual server.
Logical Partition. Partitioned MVS storage in which a separate image of an operating system can execute, and comprised of its own set of resources (processors, channels, storage, etc).
Logical Partition - A subset of a single system that contains resources (processors, memory, and input/output devices). A logical partition operates as an independent system. If hardware requirements are met, multiple logical partitions can exist within a system.
The division of a single computer (such as a mainframe or midrange server) into two or more independent environments, each running its own operating-system instance. An LPAR enables formerly separate systems to be consolidated on a single machine.
Logical PARtition Not to be confused with an LP, which is storage-oriented, an LPAR is a virtual system partition, used for running multiple OSes on a single machine.
In IBM mainframe computing and enterprise storage, a Logical Partition, commonly called an LPAR, is a virtualized computing environment abstracted from all physical devices. On IBM mainframes, LPARs can form a Sysplex or Parallel Sysplex, managed by a facility called PR/SM.