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# Cancel BCV pairs

## Prerequisites

- See Roles and associated permissions to determine the user roles that can perform this task.
- 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.

To cancel the relationship between volumes in a BCV pair:

## Steps

1. Select the storage system.
2. Select Data Protection > TimeFinder > TimeFinder/Mirror to open the TimeFinder/Mirror dashboard.
3. Do the following, depending on whether you want to perform this operation at the group level or the pair level.
   Group level:
   - Select a device group and click Cancel.
   Pair level:
   1. Select a device group and click to open the Mirror Sessions List view.
   2. Select one or more pairs and click Cancel.
4. To attach session options to the operation, select Advanced Options and select any number of options.
5. Do one of the following:
   - Click Run Now to perform the operation now.
   - Expand Run Now and click Add to Job List to add this task to the job list, from which you can schedule or run the task at your convenience. For more information, see Schedule jobs and Preview jobs.