Decreasing pool capacity, Stopping the decrease of pool capacity – HP XP Racks User Manual
Page 148
Notes on using Smart Tiers
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 including the control
information exceeds the subscription limit. For details about the formula used to calculate the
required pages for one DP-VOL including the control information, see
.
•
If the pool-VOL with system area is deleted, more than 4.2 GB of free space is necessary in
the pool.
Notes on using Fast Snap
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 is deleted, more than 4.2 GB of free space is necessary in
the pool.
When the pool-VOL is deleted, the pages contained in the deleted pool-VOL transfer to another
pool-VOL in the same tier. If the used capacity in the tier exceeds Rate of Free Space Newly Allocated
to, the overflowing pages transfer to another tier.
When pool-VOLs in the tier are empty, the appropriate tier is deleted.
Deleting the pool-VOL stops tier relocation. The process resumes after the pool-VOL is deleted.
Decreasing pool capacity
The Storage Administrator (Provisioning) role is required to perform this task.
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 that contains the pool-VOLs to be deleted.
3.
From the Pool volumes, select the pool-VOL to be deleted.
You cannot delete pool-VOLs unless Shrinkable is applied.
4.
Click Shrink Pool.
The Shrink Pool window opens.
The details of Before Shrinking and After Shrinking, including the pool capacity, the used
pool capacity and the free pool capacity, appears in Prediction Result of Shrinking.
5.
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.
Stopping the decrease of pool capacity
The Storage Administrator (Provisioning) role is required to perform this task.
1.
In the Remote Web Console main window, in the Storage Systems tree, select Pool.
2.
From the Pools, select the pool for which you want to stop decreasing pool capacity.
3.
Click Stop Shrinking Pools.
The Stop Shrinking Pools window opens.
148
Configuring thin provisioning