HP XP P9500 Software User's Manual page 335

YKQUERY
YKRESYNC REVERSE
YKEWAIT GOTO(DUPLEX)
4. From the local site, execute the YKRESYNC DELTAJNL command for the delta resync pair.
YKQUERY
YKRESYNC DELTAJNL
YKEWAIT GOTO(DUPLEX)
If the command is successful, the Continuous Access Journal Z copy pair is automatically
moved to the HOLD status (delta resync pair).
Using a Delta Resync Configuration 335