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# Manage TimeFinder/Mirror sessions

TimeFinder/Mirror is a business continuity solution that allows the use of special business continuity volume (BCV) devices.

## Prerequisites

- TimeFinder/Mirror is not supported on storage systems running PowerMaxOS 10 (6079).
- TimeFinder operations are not supported on Open Replicator control volumes on storage systems running HYPERMAX OS 5977 or PowerMaxOS 5978.

## About this task

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.

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

## Steps

1. Select the storage system.
2. Select Data Protection > Device Groups.
3. Click the TimeFinder Mirror tab to open the TimeFinder Mirror list view.

   The following properties display:

   - Device Group—Groups containing volumes using TimeFinder/Mirror
   - Standard—The number of standard volumes in the group
   - BCVs—The number of BCVs in the group
   - State—The combined state of the sessions in the group - if all the sessions are in the same state, that state appears; otherwise, Mixed appears.
   - Group Type—The type of group -property values are: RDF1, RDF2, RDF21, and Regular
   - Group Valid —Indicates whether the group is valid -property values are: Yes and No.

   Click and click the number next to Mirror Pairs to view the associated mirror pairs,

   Click to click the number next Storage Groups to view the associated storage groups,

   The following controls are available:

   - Create Snapshot— Create Snapshots
   - Restore— Restore BCV pairs
   - Split— Split BCV pairs
   - Cancel— Cancel BCV pairs

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