Allocate the XRC control, state, and journal data sets, and the
secondary volumes behind storage controls that have large cache and
NVS storages. This configuration, in addition to speeding the XRC
copy process, also provides a powerful platform for the recovery operation.
For the best setup, configure the secondary site storage controls
to have at least the same cache and NVS capacity as the primary site
storage controls. In addition, if you have the journal data sets on
an ESS, you may want to place them on volumes that utilize parallel
access volumes (PAVs), because the journal data sets will take advantage
of this capability.
Note: If the system data mover ends with
an ANTX5118E or ANTX5119E message, the I/O rate of the primary subsystem
may have exceeded the capacity of the subsystem at the receiving end.