Explanation
Volume synchronization or resynchronization of
volume pair primary_volser and secondary_volser has
started. XRC attempts to vary the secondary volume serial number given
by secondary_volser offline from the system that
the XRC data mover is running on. Do not access the secondary volume
during the copy process.
The secondary volume is varied online
after volume synchronization or resynchronization has completed.
function identifies
the type of initialization that will be performed. The functions are
described below:
- FULL
- Indicates that the entire volume will be initialized.
- RESYNC
- Indicates that only tracks changed on the primary volume since
the pair became suspended will be initialized. All tracks which were
not copied will be copied to the secondary volume if the volume pair
did not reach the duplex state when the volume pair was suspended.
- QUICK
- Indicates that only tracks on the primary volume that are allocated
at the time the initialization starts will be initialized. See z/OS DFSMS Advanced Copy Services for
additional information about this value.
Note: The XRC initialization function can end abnormally
as a result of the secondary volume not being online. In this case,
the secondary volume needs to be varied online before issuing the
XADDPAIR command specifying the secondary volume serial number.
System action
XRC functions are active.
System programmer response
XRC controls the rate at which the
volume initialization progresses, based on application activity. Some
volume initializations take longer than others.
Source
Extended remote copy (XRC).