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Increase a VM-family vCPU quota for the Classic deployment model

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The Classic deployment model is the older generation Azure deployment model. It enforces a global vCPU quota limit for virtual machines and virtual machine scale sets. The Classic deployment model is no longer recommended, and is now superseded by the Resource Manager model.

To learn more about these two deployment models and the advantages of using Resource Manager, see Resource Manager and classic deployment.

When a new subscription is created, a default quota of vCPUs is assigned to it. Any time a new virtual machine is deployed using the Classic deployment model, the sum of new and existing vCPU usage across all regions must not exceed the vCPU quota approved for the Classic deployment model.

You can request vCPU quota increases for the Classic deployment model in the Azure portal by using Help + support or Usage + quotas.

Request quota increase for the Classic deployment model using Help + support

Follow the instructions below to create a vCPU quota increase request for the Classic deployment model by using Help + support in the Azure portal.

  1. Sign in to the Azure portal, and open a new support request.

  2. For Issue type, choose Service and subscription limits (quotas).

  3. Select the subscription that needs an increased quota.

  4. For Quota type, select Compute-VM (cores-vCPUs) subscription limit increases. Then select Next.

    Screenshot showing a support request to increase a VM-family vCPU quota in the Azure portal.

  5. In the Problem details section, select Enter details. For deployment model, select Classic, then select a location.

  6. For SKU family, select one or more SKU families to increase.

  7. Enter the new limits you would like on the subscription. When you're finished, select Save and continue to continue creating your support request.

  8. Complete the rest of the Additional information screen, and then select Next.

  9. On the Review + create screen, review the details that you'll send to support, and then select Create.

Request quota increase for the Classic deployment model from Usage + quotas

Follow the instructions below to create a vCPU quota increase request for the Classic deployment model from Usage + quotas in the Azure portal.

  1. From https://portal.azure.com, search for and select Subscriptions.

  2. Select the subscription that needs an increased quota.

  3. Select Usage + quotas.

  4. In the upper right corner, select Request increase.

  5. Follow the steps above (starting at step 4) to complete your request.

Next steps