Azure unmanaged disks is retiring on September 30th, 2025

[azure-deprecation-automation]

Azure unmanaged disks is retiring on September 30th, 2025

Deprecation ID: df665c4d-0c1d-46aa-a2f6-afe5d96756ce
Deadline: Sep 30, 2025
Impacted Services:

• Azure Virtual Machine

More information:

• Announcement
• Migration Guide for Windows
• Migration Guide for Linux

Notice

Here's the official report from Microsoft:

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 September 30, 2025.

With managed disks, customers don’t have to worry about managing storage accounts when creating a disk as Azure manages the storage accounts behind the scenes. This level of abstraction reduces customer’s 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 September 30, 2025. 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 30 September 2025.

To learn more, read the documentation.

Timeline

Phase	Date	Description
Announcement	Sep 23, 2022	Deprecation was announced
Deprecation	Sep 30, 2025	Potential service disruption may occur.

Impact

Azure unmanaged disks is retiring on September 30th, 2025 and migration to Azure Managed Disks is required.

Required Action

A migration guide is provided for Windows and Linux.

Here's the official report from Microsoft:

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.

Contact

You can get in touch through the following options:

• Contact Azure support (link).
• Get answers from Microsoft Q&A (link).

[azure-deprecation-automation]

This issue is automatically managed and suggest to use GitHub Discussions to discuss this deprecation.