HyperSwap volumes create copies on separate sites for systems that are configured with HyperSwap topology. Data that is written to a HyperSwap volume is automatically sent to both copies so that either site can provide access to the volume if the other site becomes unavailable. HyperSwap volumes are supported on Storwize systems (for example, Lenovo Storage V5030 or Lenovo Storage V5030F systems) that contain more than one I/O group.
HyperSwap is a system topology that enables disaster recovery and high availability between I/O groups at different locations. Before you configure HyperSwap volumes, the system topology needs to be configured for HyperSwap and sites must be defined.
In addition, the management GUI creates an active-active relationship and change volumes automatically. Active-active relationships manage the synchronous replication of data between HyperSwap volume copies at the two sites. You can specify a consistency group that contains multiple active-active relationships to simplify management of replication and provide consistency across multiple volumes. A consistency group is commonly used when an application spans multiple volumes. Change volumes maintain a consistent copy of data during resynchronization. Change volumes allow an older copy to be used for disaster recovery when a failure occurred on the up-to-date copy before resynchronization completes.
You can also use the mkvolume command to create a HyperSwap volume. The command also defines pools and sites for HyperSwap volume copies and creates the active-active relationship and change volumes automatically.