HP SAN Virtualization Services Platform - Manual (Page 115)

Expanding virtual disks
You may need to expand a virtual disk if the host application using the virtual disk is running low on
virtual disk capacity. When you expand a virtual disk, you can allocate the additional storage capacity
from any storage pool(s) that has/have enough free capacity.
NOTE:
Because the segments come from different sources and are concatenated together, the performance
characteristics of the segments may vary. Therefore, an expansion of a virtual disk in this manner
should be viewed as a temporary measure. You should attempt to migrate the virtual disk as soon as
possible.
To expand a virtual disk:
1. In the navigation tree, expand the Entities node.
2. Click the Virtual Disk node. The virtual disks list appears in the list area.
3. Right-click the virtual disk you want to expand.
4. Select Manage > Expand. The Expand wizard opens to the Select Storage Pool(s) screen and
displays the list of available storage pools.
5. If you would like to select a storage pool from a folder, navigate to the folder in the tree on the
left of the screen. The Select Storage Pool(s) screen displays the list of storage pools in the selected
folder.
6. Select a storage pool from which you want to allocate more capacity to the virtual disk. The
storage pool must have some free space available.
7. Click Add. The storage pool you selected appears in the lower right area of the screen. If you
want to deselect the storage pool, select the storage pool in the lower right area, and click
Remove.
8. In the Allocated Capacity field of the storage pool, enter the amount of capacity you want to
allocate from the storage pool. You must allocate a value greater than 1 GB and not greater
than the free capacity of the storage pool, or 2 TB of total capacity, whichever is reached first.
The units of measurement are specified in the Units field in the next column. Adjust the units, if
necessary, by clicking the Units field and selecting a new value from the drop-down list.
9. Press Enter.
10. Repeat steps 5 through 9 to allocate more capacity from other storage pools, as required.
11. Click Next. A confirmation screen appears.
12. Click Finish. The virtual disk is expanded.
Managing virtual disk permissions
The following virtual disk permissions operations are available:
• Add Host Permission—You can add permission for one or more hosts to access the virtual disk.
• Change Host Permission—You can change the type of permission assigned to a host that has
permission to access a virtual disk.
HP StorageWorks SAN Virtualization Services Platform Manager user guide 115