Adding volumes to a Global Mirror session

Complete this task to add volumes to an existing Global Mirror session by modifying the session properties.

You can add Global Copy primary volumes to a Global Mirror session at any time after the Global Mirror session has started without stopping the session. If you attempt to add a Metro Mirror volume or volume which, for example, is converted from Global Copy to Metro Mirror, the formation of a Consistency Group fails.

Volumes can be added to a Global Mirror session but do not become active in the session until the Global Copy pair has completed its first pass and a consistent copy of the data has been formed at the remote site.

If you have many volumes that you want to add to a Global Mirror session, you might consider adding them to the session in stages. This lessens the impact on your processing.

Perform the following steps to add volumes to a Global Mirror session:

In the navigation, select Real-time Manager > Copy Services > Global Mirror. A page containing a list of volumes. Select one or more volumes on which to perform an action.
In Global Mirror — Main Page, select Modify from the Select Action drop-down list. Then click Go. The Modify Global Mirror — Select volumes page is displayed. The volumes that are currently part of this session are already selected.
Accept or modify the selected storage complex from the Select storage complex drop-down list.
Accept or modify the selected volumes from the Select volumes navigation. The volumes that you selected appear in the Selected volumes list.
1. Optionally, you can click the Create FlashCopy button to create a new FlashCopy relationship. After you create the FlashCopy relationship and the table resets, the new valid volumes are available for selection.
2. Optionally, you can click the Create Metro Mirror button to create a new Metro Mirror relationship. After you create the Metro Mirror relationship and the table resets, the new valid volumes are available for selection.
When you have finished selecting your volumes, click Next. The Modify Global Mirror — Define Global Mirror properties page is displayed.
Accept or modify the properties, and then click Next. The Modify Global Mirror — Select subordinates page is displayed.
After selecting the subordinates, click Next. The Modify Global Mirror — Verification page is displayed.
In Modify Global Mirror — Verification, review the attributes and values to verify that they are correct.
If the attributes and values are not correct, click Back as appropriate to return to the page where you want to make changes, and then specify the correct values. Otherwise, click Finish to complete the volume group creation process.