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Applies to: ✔️ Linux VMs ✔️ Windows VMs
On September 8, 2028, the ability to use Standard HDD disks as OS disks will be retired. After that date, all Standard HDD disks being used as OS disks will be automatically converted to Standard SSD disks of equivalent size. To avoid potential service disruptions during the conversion to Standard SSD after the retirement date, convert your Standard HDD OS disks to either Standard SSD or Premium SSD disks before the retirement date.
If you're using Standard HDD as OS disks, begin planning a migration now. Generally, Standard SSD provides the closest price to performance ratio as Standard HDD disks. If you need higher performance, migrate to Premium SSD.
How am I affected?
After September 8, 2028, any existing virtual machines using Standard HDD OS Disks will have their OS disks automatically converted to a Standard SSD of equivalent size. Workloads on these disks may experience a service disruption if they're not migrated before September 8, 2028.
What is being retired?
This retirement is only for the ability to use Standard HDD disks as OS disks. None of the other managed disk types or ephemeral OS disks will be affected by this retirement.
What actions should I take?
To start planning a migration to either Standard SSD or Premium SSD OS disks, first, make a list of all affected OS disks and VMs.
You can use the Azure CLI or the Azure PowerShell module to get the same list for an individual subscription. For the Azure PowerShell module, use Get-AzDisk | Where-Object { $_.Sku.Name -eq "Standard_LRS" -and $_.OsType } and for the Azure CLI, use az disk list --query "[?sku.name=='Standard_LRS' && osType!=null]" --output table.
Once you have a list of Standard HDD OS disks, convert your Standard HDD OS disks to either Standard SSD or Premium SSD disks.
For technical questions and issues, contact support.
What resources are available for this migration?
Azure Q&A: Azure and community support for migration.