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Schoolyear AVD

Scheduling tool

The lifecycle of an AVD-enabled exam begins with scheduling an exam in Schoolyear. This can be performed manually by a user or automatically by a third-party exam platform that is integrated with Schoolyear. Once the exam is scheduled, a teacher may enable “Secure Apps” for an exam by selecting an App. If an App is selected that is hosted using Schoolyear AVD, the Schoolyear AVD lifecycle is activated.

These Apps are configured by you in the AVD Add-on Configurator.

During scheduling, Schoolyear AVD will check if enough quota is available at the time of the exam. If not, the exam can not be scheduled and the user is suggested to pick another timeslot.

Quotas

The scheduling tool will calculate how much of each quota needs to be reserved to deploy an exam. For many resources, like virtual machines, this number depends on the number of students that will join the exam. Other resources, like Virtual Networks, you only need one for an exam. In that case, the required quota for an exam is a fixed number.

When configuring an App, you list the quotas that you want to reserve for that app and a math expression to calculate their usage. This math expression may include the variable n, which represents the number of students.

For example, if you deploy a 2-core sessionhost for each student that joins the exam, you could configure a quota westeurope-dsv5-vcpu and set the expression to 2*n. You can name the quotas however you like.

Any quota you configure in the App configuration, is added automatically to the “Quota” page of the Admin Dashboard. On this dashboard, you can configure the maximum quota that is available to Schoolyear AVD.

You can configure a quota for each resource that is deployed for an App. However, you can also simplify it, and just have a single quota called avdslots for example.

The Scheduling tool does not automatically reserve quota based on the deployment template that you configured for an app.

Quotas are reserved from the moment the deployment starts until the end of the deletion of the exam.