While a TrueCopy for Mainframe pair is split, the primary storage system does not perform update copy operations to the S-VOL. Resynchronizing the pair updates the S-VOL with the differential data accumulated since the split so that its data is again identical with the P-VOL data, and update copy operations begin again to the S-VOL.
This operation can be performed only from the primary storage system.
- Both volumes must be suspended (Suspend status).