13.4. Change management
Those in the computer business who are responsible for availability often see system behavior as: “If the system ran yesterday and no one made a change to it, that system will probably keep running today.” Sometimes this same understanding of change gets expressed by: “If the system fails today, the probable cause of the failure is the latest change made to the system.”
While change poses a threat to availability, it is critical for continued existence in business. It is, in fact, the acceleration of change that is the hallmark of business today and one of the key drivers for deploying a Linux-on-the-mainframe environment.
Change management in most IT organizations is typically handled by some of the most skilled persons ...
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