December 2006
Intermediate to advanced
228 pages
6h 20m
English
book
Introduction to the New Mainframe: Large-Scale Commercial Computing
by Mike Ebbers, Pilar Gonzalez Adrados, Frank Byrne, Rodney Martin, Jon Veilleux
Content preview from Introduction to the New Mainframe: Large-Scale Commercial Computing
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Chapter 4. Integrity and security 81
4.3.3 Enforced isolation
Unique address space
The range of virtual addresses that the operating system uniquely assigns to
users or programs is the address space. This is an area of contiguous virtual
addresses available for executing instructions and storing data. Using address
spaces provides the means for distinction between the programs and data
executing within a logical partition. This is the method z/OS uses to establish a
private container for processing each end-user request, and therefore ensures
runtime protection by the operating system’s architecture.
LPAR as a separate server
Among the system control functions is the capability to divide the system into
logical partitions (LPARs). An LPAR ...
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