Forward resynchronization

You can use one of the following methods to forward resynchronize pairs, including the requirements and restrictions:

Normal Copy (Primary > Secondary). A full forward resynchronization from the P-VOL to the S-VOL. During a Normal Copy, only the P-VOL is accessible to hosts for read/write operations.

Quick Resync (Primary > Secondary). A forward resynchronization from the P-VOL to the S-VOL where data is not copied or resynchronized. The volumes are paired ("PAIR" status). The update copy operation copies the differential data to the S-VOL.

During a Quick Resync, the P-VOL is accessible to hosts for read/write operations. Quick Resync, even when a host I/O does not exist, does not ensure data consistency.