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# Modify clone copy sessions

Clone copy sessions enable you to create clone copies of a source volume or storage group on multiple targets.

## Prerequisites

- You can modify the mode between Copy, NoCopy, and Precopy on clone pairs that are in a Created, Recreated, or Activated state.
- Do not change a session that was created with the Differential option to the No Copy mode, as the session will fail.
- See Roles and associated permissions to determine the user roles that can perform this task.

## About this task

This procedure explains how to modify the mode in which a clone copy session is operating.

## Steps

1. Select the storage system.
2. Select DATA PROTECTION > Device Groups.
3. Click the TimeFinder Clone tab to open the TimeFinder Clone list view.
4. Do the following, depending on whether you want to perform the operation at the group level or pair level:

   Group level:

   Select a group, click , and select Set Mode.

   Pair level:

   1. Select a group, and click to open its Details view.
   2. Click the number next to Clone Pairs.
   3. Select one or more pairs, click , and select Set Mode.
5. Select a Copy Mode:
   - Use Copy—If the session was created without the Copy option, it can be changed now to Copy mode. A copy initiates once the session is activated.
   - Use No Copy—If the session was created with Copy mode, you can change the session to Nocopy mode. The session becomes CopyOnAccess once the session is activated and no full-volume copy initiates.
   - Use Precopy—If the session was created without Precopy, you can change the session to Precopy mode, which implies a copy. You cannot change to NoCopy mode. Once the session is activated, the session changes to Copy mode.
6. If performing the operation at the group level, select the type of source volumes (Source Type) and the type of target volumes Target Type.
7. Optional: To set session options, click Advanced Options, and select any number of options.
8. 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.