Deleting Thin Image pairs
Delete Thin Image pairs when you no longer need them or when you want to delete snapshot data.
Deleting 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.
All snapshot data in a P-VOL must be deleted for there to be a decrease in the pool usage rate and an increase in unused capacity.
The amount of time required for resynchronization depends on the following, even if the pair resynchronization rate is 100 percent:
The amount of capacity the pool is using.
The number of pairs being resynchronized concurrently.
For information about shortening the time that the pair is in the process of being deleted ("SMPL(PD)" status), see Accelerating the Thin Image pair deletion process.
After deleting a Thin Image pair, the number of pairs shown in the summary section in the Local Replication window and in the list in the TI Primary Volumes tab can be different. Wait until the configuration has completed processing. If the numbers do not match, reload the configuration information (see Reloading Thin Image configuration information).
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.
The Thin Image pair must be suspended ("PSUE" status), paired ("PAIR" status), or split ("PSUS" status).
Procedure
Navigate to the Local Replication window.
In 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.
Click Operate TI Pairs.
In the TI Pairs window, select the pair you want to delete, and then click More Actions > Delete Pairs.
Click Finish, and then confirm the settings.
Accept the default task name or enter a unique name.
You can enter up to 32 letters, numbers, and symbols, except the following:
\ / : , ; * ? " < > |
If you want to monitor the task after submitting it, select Go to tasks window for status.
Click Apply to submit the task.
Result
The pair deletion process begins ("SMPL(PD)" status), and then the pair is deleted.
Related tasks