• YKQUERY
• YKRESYNC DELTAJNL
• YKEWAIT GOTO(DUPLEX)
After the commands finish successfully, the Cnt Ac-J Z copy pairs between the primary storage
system and the remote storage system are automatically moved to the HOLD status.
5. Start primary storage system maintenance.
Operation in a 2DC configuration is performed on the local storage system.
Failback
To perform a failback:
1. Finish the primary storage system maintenance.
2. Use TPC-R on the primary host to restart the copying of the Cnt Ac-S copy pairs with the
HyperSwap attribute.
Cnt Ac-S copy pairs with the HyperSwap attribute are moved from the SWAPPING status to
the DUPLEX status.
Using a 2DC configuration with HyperSwap and Continuous Access Journal Z 353
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