Adding an additional journal volume to an existing journal

You can add one additional journal volume to a journal. The additional volume is not used unless needed for maintenance or to replace the first one. In the event of pair failure, the additional (backup) journal volume allows you to reduce the time to recover a blocked journal volume.

Prerequisite information

• Review the following:

• In the Universal Replicator User Guide, see the sections on system requirements, planning journals, and planning journal volumes.

• The journal’s mirror status must be Initial, Active, Stopped, Hold, Holding, or Hold(Failure).

• The journal cannot be in use.

• Pair operations involving the journal cannot be in progress.

• Adding a reserve (spare) journal volume to a journal while remote copy is in progress causes only the journal data area to be used. The metadata area is not used, because it is unavailable. To make the metadata area available in this case, split and resynchronize all pairs in the journal group.

If you extend the journal volume when the journal volume size exceeds 36 GB, you need to restore the journal which is used for the extension to the S-VOL to use the extended capacity. However, it might take some time until the extended capacity becomes ready to be used.

• Virtual storage machine volumes cannot be used as journal volumes.

• Data volumes in the different virtual storage machines cannot be registered to the same journal. When adding journal volumes to a journal, add volumes in the same virtual storage machine as the current journal volumes.

Procedure

1. Open the Journals window.

In Command Suite: On the Resources tab, expand the Storage Systems tree, right-click the target storage system, and click Journals.

In Device Manager - Storage Navigator: In the Storage System tree, click Replication > Journals.

2. Select the Journal Volumes tab, and then select the journal to which you are adding journal volumes.

3. From the Actions menu, click Journals > Assign Journal Volumes.

4. In the Assign Journal Volumes window, from the Unassigned Journal Volumes table, select the journal volume to be added to the journal, and then click Add. The selected journal volume moves to the Assigned Journal Volumes table.

To remove a volume from the table, select the volume and click Remove.

 Only OPEN-V volumes display in the Unassigned Journal Volumes table.

5. Click Finish.

6. In the Confirm window, review the settings and enter a task name in the Task Name box.

7. Click Apply to save your settings to the system.