Copy Services functions

The system provides Copy Services functions that you can use to copy data from one system to another system.

IBM® FlashCopy® function
Makes an instant, point-in-time copy from a source volume to a target volume.
Metro Mirror
Provides a consistent copy of a source volume on a target volume. Data is written to the target volume synchronously after it is written to the source volume so that the copy is continuously updated.
Global Mirror
Provides a consistent copy of a source volume on a target volume. The data is written to the target volume asynchronously and the copy is continuously updated. However, the copy might not contain the most recent updates when a disaster recovery operation is performed.
Global Mirror with change volumes
Enables support for Global Mirror with higher recovery point objective (RPO) by the use of change volumes. This function is for environments that have less bandwidth available between the sites than that update rate of the replicated workload.

Metro Mirror, Global Mirror, and Global Mirror with change volumes are types of remote copy or remote replication.

If the system has a remote mirroring license and is configured correctly, the following copy_type values can be specified in the CLI or management GUI to create remote copy relationships:
  • global
  • metro