Live LUN Expansion


XenCenter 2023.x.x is currently in preview and is not supported for production use. Note that any future references to production support apply only when XenCenter 2023.x.x and XenServer 8 go from preview status to general availability.

You can use XenCenter 2023.x.x to manage your XenServer 8 and Citrix Hypervisor 8.2 CU1 non-production environments. However, to manage your Citrix Hypervisor 8.2 CU1 production environment, use XenCenter 8.2.7. For more information, see the XenCenter 8.2.7 documentation.

You can install XenCenter 8.2.7 and XenCenter 2023.x.x on the same system. Installing XenCenter 2023.x.x does not overwrite your XenCenter 8.2.7 installation.

To fulfill capacity requirements, you might need to add capacity to the storage array to increase the size of the LUN provisioned to your XenServer host. Use live LUN Expansion to increase the size of the LUN and use the newly gained space without detaching the SR or taking the hosts or VMs offline.


It is not possible to shrink or truncate LUNs. Reducing the LUN size on the storage array can lead to data loss.

To expand the size of the LUN:

  1. Add the extra storage to the storage array.
  2. Select the Infrastructure view and then click the SR.
  3. Click the Storage tab in the Properties pane.
  4. Click Rescan. This operation rescans the SR and any extra capacity is added and made available.
Live LUN Expansion

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