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LPAR

   Also found in: Acronyms, Wikipedia 0.04 sec.

LPAR

(Logical PARtition) 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. LPARs are caused by special hardware circuits and allow multiple system images to run in one machine. This can be multiple instances of the same operating system or different operating systems. In the IBM world, this is known as a "virtualized processor complex."

IBM's PR/SM ("prism"), Hitachi's MLPF and Amdahl's MDF are examples of LPARs. MDF was the first to provide in hardware the equivalent of IBM's VM operating system, which supports multiple system images in software. Interestingly, an LPAR can host VM, which itself can host multiple operating systems. See PR/SM and virtual machine.



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If Customer A specified in the HSM PARMLIB that HSM has a maximum of 10 tasks for tape usage, each LPAR thinks it has 10.
The care and feeding of your HSM environment by Spencer, Mike / Computer Technology Review
The FICON SAN LPAR can now be managed with FICON CUP, which will operate only within the partition in which the FICON connectivity resides.
McDATA Enhances SAN LPARs on i10K by Business Wire
Using a different server or LPAR (logical partition), the validity of the database could be insured as a result of a background processing task against the mirror without interrupting the production usage of the source data.
Disk-Based Mirroring Is A Lot More Than Just Safe by BAKER, JAMES W. / Computer Technology Review
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