For a
parallel access volume, the status of a base UCB affects the status of its
alias UCBs. The status of an alias UCB, however, might not affect
the status of its base UCB. When the system detects a problem with
an alias UCB, a recovery action applies to the base and its alias
UCBs. If an alias UCB becomes boxed, you can unbox the alias with
the following DEVSERV command:
DEVSERV QPAVS,devn,UNBOX
Error messages that display in the following situations are the
only indication that an alias UCB is boxed:
- The device is varied online
- A hardware change is activated
- The system is in recovery