Resynchronizing Thin Image pairs

You can resynchronize Thin Image pairs that you have split or that the storage system has suspended.

Resynchronizing pairs does the following:

• Updates the S-VOL so that it is again paired with the P-VOL.

• Frees up the P-VOL’s snapshot differential data for that P-VOL to reuse.

 If the amount of snapshot data in selected P-VOLs or the total number of pairs in selected snapshot groups exceeds 37,768, an error message appears when attempting to perform pair tasks.

Before you begin

• You must have the Storage Administrator (Local Copy) role.

Procedure

1. Navigate to the Local Replication window.

In Command Suite:

1. On the Resources tab, click Storage Systems, and then expand the storage system tree.

2. Right-click the target storage system, and then select Local Replication.

In Device Manager - Storage Navigator:

1. In the Explorer pane, click Storage Systems, expand the storage system tree, expand Replication, and then click Local Replication.

2. In the Local Replication window, select a P-VOL in the TI Root Volumes or TI Primary Volumes tab or a snapshot group in the Snapshot Groups tab.

3. Click Operate TI Pairs.

4. In the TI Pairs window, select the pair you want to resynchronize, and then click Resync Pairs.

5. For Resync Type, select Normal Copy (Primary > Secondary) for full forward resynchronization of data from the P-VOL to the S-VOL.

6. Click Finish, and then confirm the settings.

7. Accept the default task name or enter a unique name.

You can enter up to 32 letters, numbers, and symbols, except the following:

\ / : , ; * ? " < > |

8. If you want to monitor the task after submitting it, select Go to tasks window for status.

9. Click Apply to submit the task.

Result

The Thin Image pair is resynchronized ("PAIR" status).

Related concepts

• Workflow for creating groups and storing snapshot data using CCI

Related tasks

• Splitting Thin Image pairs to store snapshot data

Related references

• Resync Pairs wizard