You can specify a new size for a Writable Volume using the App Volumes Manager and App Volumes increases the .vmdk file to the new size.

Important: You cannot expand a Writable Volume if your Machine Manager is configured as VHD In-Guest Services. This feature is available only on vCenter Server. See Types of Machine Manager Configurations and Configure and Register the Machine Manager.


  1. From the App Volumes Manager console, select VOLUMES (2.X) > Writables.
  2. Select a Writable Volume from the list and click Expand.
    A Confirm Expand window is displayed.
  3. Enter the new size for the volume and click Expand.
    You must enter a size that is at least 1 GB greater than the current size of the Writable Volume.


The Writable Volume file is expanded to the new size the next time the user logs in to the virtual machine.