Deleting Thin Image pairs

Delete HTI pairs when you no longer need them or when you want to delete snapshot data. Deleting HTI pairs deletes snapshot data from the pool and cancels the relationship between the P-VOL and S-VOLs. You can use the unpaired P-VOL and S-VOLs in another pair.

The amount of time required for deletion depends on the following, even if the pair synchronization rate is 100 percent:

The amount of capacity the pool is using.

The number of pairs being resynchronized concurrently.

For more information about shortening the time that the pair is in the process of being deleted (“SMPL(PD)” status), see Workflow for accelerating the pair deletion process.

Deleted pairs are not shown in HDvM - SN.

After deleting an HTI pair, the number of pairs shown in the summary section in the Local Replication window and in the list in the TI Pairs tab can be different. Wait until the configuration has completed processing. If the numbers do not match, reload the configuration information (see Reloading configuration information).

Prerequisites

You have the Storage Administrator (Local Copy) role.

The HTI pair is suspended (“PSUE” status), paired (“PAIR” status), or split (“PSUS” status).

Navigate to the Local Replication window.

In Hitachi Command Suite:

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

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

In Device Manager - Storage Navigator:

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

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

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

In the TI Pairs window, select the pair you want to delete, and then click More Actions > Delete Pairs.

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

Click Finish.

In the Delete Pairs 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.

Click Apply.

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