Resizing volumes

Last published : Jun 19, 2026
The applications in your data center reside on the file systems that are mounted on various volumes. You may want to increase or decrease the size of the volume in circumstances such as:
  • The higher usage of the file systems that requires you to increase the size of the volume
  • The lower usage of the file systems that requires you to decrease the size of the volume without affecting the data
Storage Foundation lets you increase or decrease the size of an individual volume or a volume in a volume set.
To resize a volume, you can use the free disks available on the disk group of the volume or the free disks available on the host where the volume resides. If the free disks that you choose are not part of the disk group of the volume, the Management Server console adds those disks to the disk group of the volume before using them to complete the resize operation.
You can resize a volume only if it is in the healthy state. The resize operations can be performed only on the volumes that are controlled by Storage Foundation. If a volume has mirrors or linked volumes, the sizes of these associated volumes or mirrors also grow when you increase the size of a volume. When you decrease the size of the volume, the file systems that are mounted on the volume are not affected if the volume has enough space to accommodate the file systems. It is also recommended not to reduce the size of the volume if it contains any unmounted file system because it can result in the loss of data. You cannot grow a volume if the disk groups on which the volume has been created do not have enough space.
If the volume has a VxFS filesystem on it which is full or almost full, before attempting the resize operation, ensure adequate file system space is available.
To perform this task, your user group must be assigned the Admin role on the host or the Server perspective. The permission on the host may be explicitly assigned or inherited from a parent Organization.
To resize a volume
  1. In the Management Server console, go to the Server perspective and expand Manage in the left pane.
  2. Expand the Organization or Uncategorized Hosts to locate the host.
  3. Expand the host and select Volumes.
  4. Right-click on the required volume and select Resize.
  5. In the Resize volume wizard panel, specify the required information. Click Next. If you have selected the** Specify disks for grow option, select the disks from the Disk Selection wizard panel. To search for disks using one or more filter criteria, click Edit**. Click** Next**.
See Resize volume panel options.
See Select Disks panel options.
  1. In the Resize volume summary panel, verify the details that you have specified for resizing the volume. Click Finish.
  2. In the Result panel, verify that the selected volume has been resized successfully.
See Creating Storage Foundation volumes.
See About managing Storage Foundation volumes.