Use the Edit vApp Templates tab to edit the vApp template you chose (the primary vApp template) or to add or remove templates and configure values for prepop options.

Some vApps are hundreds of gigabytes in size and it can take time for a lab to deploy. To create a better user experience, VMware Learning Platform uses the prepop feature. The prepop feature deploys an instance of a lab ahead of user demand and leaves it running. As a result, when a user requests an instance of that lab, VMware Learning Platform connects that user to an already running copy in a matter of seconds, and then queues up another deployment of a prepop for future.

As you set up your vApps, be aware of the following information.

  • All vApp templates must have an identical structure. As a result, any vApp template that you add becomes part of a collection of a vApp templates.

  • There is no difference between a primary and an additional vApp template beyond the primary’s role in enforcing identical structure.

  • If you add vApp templates, then the deployment pool aggregates vApp template values such as Refill At and Fill Up.


    If you include the same vApp template in multiple deployment pools and later edit the values of that shared vApp template, then each deployment pool that shares the vApp template recalculates the aggregate values.

  • You cannot remove all vApp templates from a deployment pool when there are one or more entitlements for labs that use the pool.

  • You cannot change all the templates in a pool with a single edit when there is an entitlement for a lab that uses the pool. That is, you cannot remove all existing templates and then add new ones. You can, however, make two edits: First, add the new templates to the pool; next, remove the old templates (you cannot do this in a single edit).

vApp Template Options

Use the Edit vApp Template form to edit the vApp template you chose (the primary vApp template) or to add/remove templates.

  • + Add/Remove vApp Templates: Displays a list of available vApps. You can add a vApp template(s) to the deployment pool in addition to the primary vApp template. You can also delete vApps from the deployment pool. Note the following:

  • Enabled: Enables/disables the vApp template. For example, if there are two templates and one is disabled, then the disabled template will not get any prepops.

  • Cloud Enabled: Displays the status (enabled or disabled) of the Cloud Org or Cloud Org VDC.

  • Refill At: Sets value for the least number of available prepops. If the number of available prepops goes below the Refill At value, then the system deploys prepops (refills) until the Refill At value is met.

  • Fill Up: Sets value to reach (fill up) for the number of prepops to be deployed.

  • Prepops: Sets the current number of prepops available for the vApp template. If you adjust this number, it will add/remove prepops from the vApp template. A warning message appears if a deployment pool is disabled. A disabled deployment pool cannot deploy prepops.

  • VM Equality Check: If enabled, then the system runs a check of the virtual machines included

Enabling or Disabling the Display of Statistics

You can use the Gear icon drop-down menu on the vApp template page to enable or disable the display of vApp template-related statistics.

Average Prepop Deploy Time is the average deploy time for prepops, in seconds, based on a seven-day rolling time. A value of 0.0 means that the system does not currently have an average deploy time available.