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Migrate Azure VMs to Managed Disks in Azure

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Applies to: ✔️ Linux VMs ✔️ Windows VMs

Azure Managed Disks simplifies your storage management by removing the need to separately manage storage accounts. You can also migrate your existing Azure VMs to Managed Disks to benefit from better reliability of VMs in an Availability Set. It ensures that the disks of different VMs in an Availability Set are sufficiently isolated from each other to avoid single point of failures. It automatically places disks of different VMs in an Availability Set in different Storage scale units (stamps) which limits the impact of single Storage scale unit failures caused due to hardware and software failures. Based on your needs, you can choose from four types of storage options. To learn about the available disk types, see our article Select a disk type

Migration scenarios

You can migrate to Managed Disks in following scenarios:

Scenario Article
Convert stand alone VMs and VMs in an availability set to managed disks Convert VMs to use managed disks
Convert a single VM from classic to Resource Manager on managed disks Create a VM from a classic VHD
Convert all the VMs in a vNet from classic to Resource Manager on managed disks Migrate IaaS resources from classic to Resource Manager and then Convert a VM from unmanaged disks to managed disks
Upgrade VMs with standard unmanaged disks to VMs with managed premium disks First, Convert a Windows virtual machine from unmanaged disks to managed disks. Then Update the storage type of a managed disk.

Important

VMs created through the classic deployment model will be retired on September 1, 2023.

If you use IaaS resources from Azure Service Management, please complete your migration by September 1, 2023. We encourage you to make the switch sooner to take advantage of the many feature enhancements in Azure Resource Manager.

For more information, see Migrate your IaaS resources to Azure Resource Manager by September 1, 2023.

Next steps