Spot quota: Increase limits for all VM series

Spot virtual machines (VMs) provide a different model of Azure usage. They let you assume lower costs in exchange for letting Azure remove virtual machines as needed for pay-as-you-go or reserved VM instance deployments. For more information about spot VMs, see Azure spot VMs for virtual machine scale sets.

Azure Resource Manager supports two types of vCPU quotas for virtual machines:

  • Pay-as-you-go VMs and reserved VM instances are subject to a standard vCPU quota.
  • Spot VMs are subject to a spot vCPU quota.

For the spot vCPU quota type, Resource Manager vCPU quotas are enforced across all available virtual machine series as a single regional limit.

Whenever you deploy a new spot VM, the total new and existing vCPU usage for all spot VM instances must not exceed the approved spot vCPU quota limit. If the spot quota is exceeded, the spot VM deployment isn't allowed.

This article discusses how to request an increase in the spot vCPU quota limit by using the Azure portal.

To learn more about standard vCPU quotas, see Virtual machine vCPU quotas and Azure subscription and service limits, quotas, and constraints.

To learn about increasing the vCPU limit by region, see Standard quota: Increase limits by region.

Request a quota limit increase from Help + support

To request a spot quota limit increase for all virtual machine series using Help + support:

Note

You can also request a quota limit increase for multiple regions through a single support case. For details, see step 8.

  1. From the Azure portal menu, select Help + support.

    The Help + support link

  2. In Help + support, select New support request.

    Create a new support request

  3. For Issue type, select Service and subscription limits (quotas).

    Select an issue type

  4. For Subscription, select the subscription whose quota you want to increase.

    Select a subscription for an increased quota

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

    Select a quota type

  6. Select Next: Solutions to open PROBLEM DETAILS. Select Provide details to enter additional information.

    The "Provide details" link

  7. In Quota details, do the following steps:

    1. For Deployment model, select the appropriate model, and for Locations, select a location.

      Provide additional quota details

    2. For the selected location, under Types, in Select a type, choose Spot.

      Select spot type

      Under Types, you can request both standard and spot quota types from a single support case through multi-selection support.

      For more information, see Standard quota: Increase limits by VM series.

    3. Enter the new quota limit that you want for this subscription.

      Select a new quota for spot VM

  8. To request a quota increase for more than one location, select an additional location in Locations, and then select an appropriate VM type. You can then enter a limit that applies to the additional location.

    Specify additional locations in quota details

  9. Select Save and continue to continue creating the support request.

Request a quota limit increase from the Subscriptions pane

To request a spot quota limit increase for all VM series from the Subscriptions pane:

Note

You can also request a quota limit increase for multiple regions through a single support case. For details, see step 7.

  1. In the Azure portal, search for and select Subscriptions.

    Subscriptions in the Azure portal search

  2. Select the subscription whose quota you want to increase.

    Subscriptions to select for changes

  3. In the left pane, select Usage + quotas.

    The "Usage + quotas" link

  4. At the top right, select Request increase.

    Select to increase quota

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

    Select a quota type

  6. Select Next: Solutions to open PROBLEM DETAILS. Select Provide details to enter additional information. In Quota details, enter the following information:

    1. For Deployment model, select the appropriate model, and for Locations, select a location.

      Provide quota details

    2. For the selected location, under Types, in Select a type, choose Spot.

      Select Spot type

      For more information, see Standard quota: Increase limits by VM series.

    3. Enter the new quota limit that you want for this subscription.

      Enter a new value for vCPU limit

  7. To request a quota increase for more than one location, select an additional location in Locations, and then select an appropriate VM type. You can then enter a limit that applies to the additional location.

    Select additional locations in quota details

  8. Select Save and continue to continue creating the support request.