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Azure Disk Storage
A high-performance, durable block storage designed to be used with Azure Virtual Machines and Azure VMware Solution.
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Hello Ethan Herridge
Azure has officially marked September 30 2025, as the date when unmanaged disks will be deprecated. However, migration away from unmanaged disks needs to be completed by March 31, 2026. After that date, you won't be able to start new IaaS VMs using unmanaged disks, and existing VMs running on unmanaged disks will be stopped and deallocated.
So, in short:
- Retirement is effective from: September 30, 2025
- Final migration deadline: March 31, 2026
It's a good practice to start planning your migration to Azure managed disks as soon as possible to ensure a smooth transition and take advantage of the benefits that managed disks offer.
Refer: Azure Unmanaged Disks Migration Guidance
After September 2025, these products will no longer receive security updates, non-security updates, bug fixes, or technical support.
I hope this was helpful!
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