HP XP Racks - Manual (Page 478)

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YKQUERY
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YKRESYNC REVERSE
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YKEWAIT GOTO(DUPLEX)
If the command is successful, the copy direction of all Cnt Ac-J Z copy pairs is reversed.
5. Perform failure recovery of the primary host.
2DC configuration operations are performed from the secondary site.
Failback
1. Recover the primary host failure.
2. Stop operation at the secondary site.
3. On the primary host, execute the YKSUSPND FORWARD command for Cnt Ac-J Z copy pairs.
478 Maintenance and troubleshooting operations