Azure Quotas

Having enough quota in Azure to meet your user capacity requirements is crucial. If you do not have enough quotas, teachers will be unable to schedule more exams.

Maintaining your quota follows these steps:

1. Gather your user capacity requirements

2. Calculate required quota

3. Request quota from Azure

4. Update quota in the Schoolyear Secure Apps Console

Step 1: Gather your user capacity requirements

You need to gather the capacity requirements from your education department. You need to find the maximum number of concurrent exam sessions your AVD implementation needs to support.

Keep in mind that exam sessions are considered concurrent when their timeframes overlap. Note that you must consider the deployment and deletion time of each exam as part of their timeframe. The deployment time is what you configure in the AVD Add-on. The deletion time is fixed to 20 minutes.

An exam scheduled from 09:00 until 11:00 will have a timeframe of 06:00 until 11:20, assuming a 3-hour deployment time.

Step 2: Calculate required quota

To calculate your quota requirement, follow this calculation:

(user capacity X CPU cores per student X 1.15) X (the number of overlapping exam times)

The number of CPU cores you assign per student depends on the VM Size you configure in the AVD Add-on.

e.g., for 1000 students taking an exam in an exam time slot from 9:00–12:00. We add 3 hours deployment time upfront, add one hour for students with time extension and add 20-minute deletion time. The time slot becomes 6:00–13:20. Afternoon exams start at 13:00, meaning the exams overlap by several hours. The exam uses D2s_v5 Virtual Machines. The calculation in this case becomes:

(1000 X 2 X 1.15) X (2) = 4600

Step 3: Request quota from Azure

Ensure you have enough quota in your Azure Subscription.

1. Navigate to the Quotas page in the Azure Portal.

2. Select the Subscription you dedicated to this implementation

3. Select the Region you selected for deployments. You can find which region you selected by to the AVD add-on you installed in a previous step, and checking the region of the Base Resource Group shown in the Infrastructure tab.

4. Search for Standard DSv5 Family vCPUs (or a different CPU type if you are planning on using a different VM type).

5. Ensure you have enough quota. If you do not, request an adjustment by clicking the pencil icon.

Note

If your quota request is denied, resubmit it in progressively larger increments, one after another.

Step 4: Update Quota in Schoolyear

After you requested your quota from Azure, you need to configure this number in the Schoolyear Secure Apps Console as well.

1. Navigate to the Quota page in the Secure Apps Console.

2. Find the azurevms quota for the Subscription you are using.

3. Update the value to match what is available in Azure.

4. Click the Save icon.