2DC Configuration with HyperSwap and Continuous Access Journal
This configuration allows operation at the primary site and secondary site under a 2DC configuration
to start immediately after a primary storage system failure or maintenance by using HyperSwap.
Both the primary storage system and local storage system are placed at the primary site, and a
PPRC copy pair for which HyperSwaps are enabled is used. Continuous Access Journal for
Mainframe is also used from the primary storage system for the remote storage system at the
secondary site. A Continuous Access Journal for Mainframe copy pair in the delta resync waiting
status must be created between the PPRC copy pair S-VOL and the Continuous Access Journal for
Mainframe S-VOL beforehand.
4x4 Configuration
This configuration performs remote copying from multiple storage systems on the primary site to
multiple storage systems on the secondary site with Continuous Access Journal for Mainframe to
preserve consistency.
Data Center Configurations 29
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