Find Azure VM’s using UnManaged Disks

Migrate your data to Azure managed disks before unmanaged disks are retired on 30 September 2025

You’re receiving this email because you use Azure unmanaged disks.

On 30 September 2025, we’ll retire Azure unmanaged disks. Before that date, you’ll need to migrate any data that’s stored on unmanaged disks to managed disks, which provide additional capabilities including:

  • Improved reliability, scalability, and ease of use.
  • Simplified storage management.
  • Built-in bursting capabilities to cost-effectively scale performance.

After 30 September 2025, any virtual machines that are still using unmanaged disk storage will become unavailable and the storage will be deallocated until the data is moved to a managed disk.

Page blobs will not be affected by this change.

Required action

To avoid service disruptions, review pricing and follow the steps to migrate your Windows or Linux virtual machines to managed disks before 30 September 2025.

Help and support

If you have questions, get answers from community experts in Microsoft Q&A. If you have a support plan and you need technical help, please create a support request:

  1. For Summary, type a description of your issue.
  2. For Issue type, select Technical.
  3. For Subscription, select your subscription.
  4. For Service, select My services.
  5. For Service type, then select Disk Storage.
  6. For Problem type, select Disk Migration.

Learn more about service retirements that may impact your resources in the Azure Retirement Workbook. Please note that retirements may not be visible in the workbook for up to two weeks after being announced. 

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