This topic describes some terms you may need to know as you use
this publication.
- Migration
- Activities that relate to the installation of a new version
or release of a program to replace a previous level. Completion of
these activities ensures that the applications and resources on your
system will function correctly at the new level.
- Coexistence
- Two or more systems at different levels (for example, software,
service or operational levels) that share resources. Coexistence includes
the ability of a system to respond in these ways to a new function
that was introduced on another system with which it shares resources:
ignore a new function, terminate gracefully, support a new function.
These are examples of multisystem configurations in which resource
sharing can occur:
- A single system running multiple LPARs
- A single processor that is time-sliced to run different levels
of the system (for example, during different times of the day)
- Two or more systems running separate processors
- A Parallel Sysplex configuration (also includes a basic sysplex)