Identifying and Testing the components of an OS/390
or z/OS Image, using
IMAGE Focus, begins with Image Selection.
Entering exactly the same system parameters used by operations personnel
prompts IMAGE Focus to identify and locate needed resources and
begin testing each OS/390 or z/OS Inspection Point.
OS/390 or z/OS Inspection Point:
At its lowest level, each OS/390
or z/OS Image is composed of hundreds of individual system elements. Each element is
represented as a Keyword or Statement within the members IEASYMxx and IEASYSxx. These members in turn are
accessed by Pointers derived from Statements found within LOADxx.
At the highest level, the value of LOADxx is derived from Operator Input as the Inspection Process begins with the
confirmation that IPL text exists on the IPL Volume and that the SYS1.NUCLEUS dataset can be opened.
Assembling these elements represents the network of dependencies needed for a successful OS/390
or z/OS IPL. Each intersection
within this network represents a potential Inspection Point.
With IMAGE Focus, the integrity
of production systems are maintained while tests are run under
"real-world" conditions. Now that can be a real
benefit.
More about IMAGE Focus:
