In 2017, we launched Azure Managed Disks. Since then, we've been enhancing our capabilities. We will begin deprecating unmanaged disks on September 30, 2022, because Azure Managed Disks now have full capabilities of unmanaged disks and other advancements. This functionality will be completely retired on March 31, 2026 (extended from September 30, 2025).
With managed disks, Azure manages storage accounts automatically, reducing customer maintenance burden significantly. Furthermore, managed disks provide numerous advantages over unmanaged disks such as better reliability, scalability, greater storage capacity, bursting, shared disks etc.,
If you use unmanaged disks, you should start planning your migration now. Migrate your data from Azure unmanaged disk storage to managed disks before March 31, 2026. Page blobs will not be affected by this change.
To avoid serious service disruptions, review pricing and follow the steps to migrate your Windows or Linux virtual machines to managed disks before March 31, 2026.
To learn more, read the documentation.
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.