HP XP P9500 Storage - Manual (Page 137)

Notes on deleting a tier in a pool
You cannot delete a pool-VOL under these conditions.
•
If the pool-VOL is deleted, the used capacity of the pool-VOL exceeds the pool threshold.
•
If the pool-VOL is deleted, the subscription rate of the total V-VOL capacity exceeds the
subscription limit.
•
If the pool-VOL with system area has less than 4.2 GB of free space. There must be 4.2 GB
of free space in the pool in order to delete the pool-VOL with system area.
Deleting the pool-VOL stops the tier relocation. The process resumes after the pool-VOL is deleted.
Procedure 13 To delete a tier in a pool
1. In the Remote Web Console main window, in the Storage Systems tree, select Pool.
The pool name appears below Pool.
2. Select the pool containing the pool-VOLs to be deleted.
The pool information appears on the right.
3. Select the Pool volumes tab to select all the pool-VOLs contained in the tier to be deleted.
Select multiple pool-VOLs using the Shift key (if the pool-VOLs are adjacent), or using the Ctrl
key (if the pool-VOLs are not adjacent).
You cannot delete a pool-VOL for which Shrinkable is not applied.
4. Click Shrink Pool.
5. In the Shrink Pool window, verify the changes.
The details of Before Shrinking and After Shrinking, including the pool capacity, the used
pool capacity and the free pool capacity, appears in Predicted Result of Shrinking.
6. In the Confirm window, confirm the settings, in Task Name type a unique name for this task
or accept the default, and then click Apply.
If Go to tasks window for status is checked, the Tasks window opens.
Deleting a pool
When you delete a pool, its pool-VOLs (LDEVs) will be blocked. If they are blocked, format them
before reusing them. If the blocked pool-VOL is an external volume, select Normal Format when
formatting the volume. You can delete a pool only when all of the THP-VOLs have been deleted.
1.
In the Remote Web Console main window, in the Storage Systems tree, select Pool.
The pool name appears below Pool.
2. From the Pool table, select the pool to be deleted.
Select multiple pools using the Shift key (if the pools are adjacent), or using the Ctrl key (if the
pools are not adjacent).
3. Click More Actions, and then select Delete Pools.
The Delete Pools window opens.
You cannot delete a pool whose usage is not 0%, or a pool for which THP V-VOLs are assigned.
4. Click Finish.
The Confirm window opens.
To continue with the shredding operation and delete volume data, click Next. For details about
the shredding operation, see HP P9000 Volume Shredder for Open and Mainframe Systems
User Guide.
If the pool is blocked, you might not be able to perform shredding operations.
Managing pools and THP V-VOLs 137