Resynchronizing Thin Image pairs

You can resynchronize pairs that you have split or that the storage system has suspended. Resynchronizing HTI pairs does the following:

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

• Deletes the P-VOL’s snapshot data, which decreases the pool usage rate and increases the unused capacity.

Prerequisite

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

1. Navigate to the Local Replication window.

In Hitachi 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 Primary Volumes tab or a snapshot group in the Snapshot Groups tab.

3. From the Action menu, select Local Replication > Operate TI Pairs.

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

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

 You can specify up to 32 P-VOLs using HDvM - SN.

6. Click Finish.

7. In the Confirm window, complete the following.

• Confirm the settings.

• Enter a name for your task in Task Name.

• (Optional) Select Go to tasks window for status if you want the Tasks window to open after you click Apply.

8. Click Apply.

The task is registered, and if the Go to tasks window for status check box was selected, the Tasks window appears.

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