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# Understanding TimeFinder/Mirror sessions

TimeFinder/Mirror is a business continuity solution that enables the use of special business continuance volume (BCV) devices. Copies of data from a standard device (which are online for regular I/O operations from the host) are sent and stored on BCV devices to mirror the primary data. Uses for the BCV copies can include backup, restore, decision support, and applications testing. Each BCV device has its own host address, and is configured as a stand-alone device.

- On storage systems running HYPERMAX OS 5977 or PowerMaxOS 5978, TimeFinder/Mirror operations are mapped to their TimeFinder/SnapVX equivalents.
- TimeFinder operations are not supported on Open Replicator control volumes on storage systems running HYPERMAX OS 5977 or PowerMaxOS 5978.

The TimeFinder/Mirror dashboard provides a single place to monitor and manage TimeFinder/Mirror sessions on a storage system.