The mainframe environment has developed a mature security architecture. While it is still necessary to ensure that access control is given the necessary care, the necessary security infrastructure has been put in place to help ensure that the intended controls are not circumvented. System integrity problems are not glossed over or ignored altogether as may happen in other environments. Again, the mainframe is the benchmark by which other solutions are measured.
The mainframe environment supports data storage management tools which allow data backup, archival and migration of inactive data to lower cost media to be performed so that they are almost invisible to applications. The mainframe environment also facilitates consolidating the management of the computing resource, allowing for economies of scale in system and data administration.
The Dinosaur Myth discusses the total cost of ownership associated with various platforms.
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