HP XP P9500 Storage - Manual (Page 140)

Perform the delta resync operation
The delta resync operation is performed during disaster recovery. This operation copies differential
data from the Continuous Access Synchronous Z R-VOL to the Continuous Access Journal Z S-VOL.
The delta resync operation is part of the Resume Pair operation. Follow instructions in
“Restore a
pair” (page 73) to execute delta resync.
140 Continuous Access Journal Z configurations with Continuous Access Synchronous Z