Using an existing CTG

You can assign new pairs or existing pairs to an existing consistency group.

To assign new pairs to an existing consistency group

1. Add pair information to the existing configuration definition file B, which consists of pairs in multiple storage systems.
2. Copy and create CCI or BCM configuration definition file C.
3. Perform the paircreate or YKMAKE operation and register them to configuration definition file C.

To assign existing pairs to an existing consistency group

1. Create CCI or BCM configuration definition file A to use with CCI or BCM for pair operations.
2. Perform the pairsplit or YKSUSPND operation on pairs that you want to register in the existing CTG with multiple systems. Do this using configuration definition file A.
3. Perform the pairresync or YKRESYNC operation without designating a consistency group. Do this using configuration definition file A.
4. Perform the pairsplit or YKSUSPND operation again using configuration definition file A.
5. Perform the pairsplit or YKSUSPND operation to the existing configuration definition file B, which consists of the pairs in the multiple primary and secondary system configuration.
6. Add pair information to existing configuration definition file B.
7. Delete then re-create the pairs, registering them in configuration definition file C.