Universal Replicator for Mainframe represents a unique and outstanding disaster recovery solution
for large amounts of data that span multiple volumes. The Universal Replicator for Mainframe
group-based update sequence consistency solution enables fast and accurate database recovery,
even after a rolling disaster, without the need for time-consuming data recovery procedures. The
user-defined Universal Replicator for Mainframe journal groups (volume groups) at the secondary
site can be recovered with full update sequence consistency, but behind the primary site due to
asynchronous copy operations. This functionality also provides protection for write-dependent
applications in the event of a disaster.

Universal Replicator for Mainframe enables you to create duplicate volumes by copying data from
the primary data volumes in the primary storage system to the secondary data volumes in the
secondary storage system at the remote location. To perform this function, the journal obtain function
at the primary site, the journal copy function between the primary and secondary sites, and the
journal restore function at the secondary site are performed sequentially with the primary and
secondary data volumes and the journal volumes. Write sequence consistency for the primary data
volume at the primary site is also maintained for the secondary data volume at the secondary site
by the write sequence number assigned to the journal data with the journal obtain function, enabling
you to configure the duplicate system which has data integrity. Universal Replicator for Mainframe
reduces the occurrence of pair suspensions due to restrictions on data transfer from the primary
site to the secondary site by storing the write data from the host in the master and restore journal
volumes, providing a highly reliable duplication system.

The following figure shows an overview of Universal Replicator for Mainframe operations.

Functionality Overview

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