HP StorageWorks XP Remote Web Console Software - Manual (Page 33)

Journal Obtain in TrueCopy for Mainframe Synchronous Secondary Site
When a failure occurs, before performing the delta resync operations, you need to obtain the
journal data in the TrueCopy for Mainframe Synchronous secondary site of the 3DC multi-target
configuration. To create a Universal Replicator for Mainframe pair for the delta resync operation,
specify the TrueCopy for Mainframe Synchronous R-VOL in the TrueCopy for Mainframe Synchronous
secondary site as the primary data volume, and specify the data volume in the Universal Replicator
for Mainframe secondary site as the secondary data volume.
When you create a Universal Replicator for Mainframe pair for the delta resync operation, the
differential data of data volumes in the TrueCopy for Mainframe Synchronous primary site and the
TrueCopy for Mainframe Synchronous secondary site will be stored in the journal volumes in the
TrueCopy for Mainframe Synchronous secondary site as journal data. The following figure shows
an example.
Figure 7 Delta Resync Setting in 3DC Multi-target Configuration (Before Failure Occurs)
Journal Obtain in TrueCopy for Mainframe Synchronous Secondary Site 33