ISO Virtual Server Disks

Virtual server storage is provided by disks. A disk is a partition of a data store that is allocated to a specific virtual server. Disks can be assigned as standard or swap disks (there are no swap disks for Windows based templates). They can also be set as primary (that is, the disk from which an OS will boot).

Managing disks for the entire cloud is handled through the Control Panel's Settings menu. Disks for individual virtual servers are managed through the Control Panel's Virtual Servers menu.

  • Starting from OnApp 6.3, it is not possible to assign disks to ISO virtual servers.
  • Creating multiple partitions on one disk is forbidden for all virtual servers.

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Edit ISO Virtual Server Disks


For primary and swap (Linux, FreeBSD) disks you may only change the label and the size.
You can easily resize disks when needed. The resize will fail if your current usage is greater than the new size you request. Note, that any changes on disk size will lead to reboot of your VS.

To change disk size:

  1. Go to your Control Pane l> Cloud > Virtual Servers menu.
  2. Make sure your virtual server is powered off, then click its label to open its details screen.
  3. Click the Storage tab > Disks.
  4. Click the Actions button next to the disk you want to change, then click the Edit link.
  5. Enter a new disk label and size in GB in the fields provided.
  6. Click the Save Disk button. 
  • You cannot decrease disk size. Only the increase disk size option is available. 
  • You cannot resize the primary disk for FreeBSD-based virtual servers.
  • Size of a primary disk cannot exceed 2 TB.

Migrate ISO Virtual Server Disks


You can migrate disks of your virtual servers to other data stores, which are allocated to the same Compute resource. Unlike VS migration – disk migration requires reboot of the VS (despite the template it is based on).
To migrate a disk:

  1. Go to your Control Panel > Cloud > Virtual Servers menu.
  2. Make sure your virtual server is powered off, then click its label to open its details screen.
  3. Click the Storage tab > Disks.
  4. Click the Actions button next to the disk you want to move to another data store, then click the Migrate button.

  5. On the screen that appears, select a target data store from a drop-down box.

  6. Click Start Migrate. 


  • You can only migrate disks to data stores in data store zones assigned to your bucket. 
  • You cannot migrate a disk to a data store with less capacity than the disk size.
  • If you move a 850GB disk between aggregates with 10GB actual usage, the 'dd' image of the local volume manager will take 850GB space, because the entire local volume manager is copied, including zero 'd space which may not be able to be recovered.

Delete ISO Virtual Server Disks


To delete a disk:

  1. Go to your Control Panel > Cloud > Virtual Servers menu.
  2. Make sure your virtual server is powered off, then click its label to open its details screen.
  3. Click the Storage > Disks tab.
  4. Click the Actions button next to the disk you want to delete, then click Delete.
  5. In the pop-up window, move the Force Reboot slider to the right, then select the VS shutdown type.

  6. Move the Required Startup slider to the right to start up the VS automatically.

    Steps 5 and 6 apply to disks of VSs that are on.

  7. Click the Destroy Disk button.

This will schedule the "destroy disk" transaction.