Initial copy operation

When the initial copy operation is executed, all data in the P-VOL is copied in sequence directly to the S-VOL without use of the primary journal volumes. The copied data in the initial copy operation is referred to as base journal data, even though the primary journal volumes are not used.

• When you create or resynchronize two or more pairs within the same journal, the base journal data is copied to the respective S-VOLs, one at a time. This extends the time required for all the operations to be completed.

• As an option, you can create a pair and specify that no data is copied during the initial copy operation. This option should be specified only when the data in the P-VOL and S-VOL is already identical, or when the P-VOL and S-VOL do not yet contain any data. Use of this option establishes the pair quickly without the delay of the initial copy operation. Once the pair is established (pair status is PAIR), update copy operations are performed to copy all P-VOL updates to the S-VOL.

• A Universal Replicator pair can also be created using a TrueCopy initial copy operation. This reduces the time to complete the initial copy operation. For details, see the topic about planning pair volumes in the user guide.