3DC multi-target configuration with three UR sites

With Universal Replicator, you can set up two secondary sites for one primary site. It is advisable that you create a UR pair that connects the two secondary sites so that the remote copy system created with the host operation site and backup site can be created immediately in the event of a failure or disaster at the primary site.

The following illustration shows the 3DC multi-target configuration with three UR sites:

• UR primary site

• UR secondary site (copies data with a mirror whose ID is an arbitrary number (M in the illustration) from the primary site).

• UR secondary site (copies data with a mirror whose ID is an arbitrary number (N in the illustration) from the primary site).