Most resource allocation, error recovery, and system monitoring functions in MVS™ are automatic. Sometimes, however,
the system requests your assistance, takes certain actions that you
must understand and/or correct, or issues messages that make you aware
of internal processing. So that you can plan your actions carefully
and respond appropriately to system messages, you need to know how
to interact with the following system functions:
- Device allocation
- Hot I/O detection
- Device boxing