You resynchronize TrueCopy pairs when you recover data from a disaster or when you perform tasks on TrueCopy pairs, like assigning pairs to consistency groups.
While a TrueCopy pair is split, the primary system does not perform update copy operations to the S-VOL. Resynchronizing the pair updates the S-VOL with differential data accumulated since the split, so that its data is again identical with the P-VOL's data. Update copy operations begin again to the S-VOL.
When resynchronizing, TrueCopy pairs can be migrated to global-active device. For details, see the VSP One Block Global-Active Device User Guide.
- Required status: Both volumes must be suspended (PSUS or PSUE).
- This operation is performed from the primary system only.
Resynchronize the TC pair using the CCI
pairresync command.