Azure Disk Storage: OS disks on Standard HDD retirement

From 8 Sep 2028, service for operating system (OS) disks running on Standard HDD is retired. After the retirement date, OS disks still on Standard HDD are converted to Standard SSD of equivalent size. Microsoft states that migrating before the retirement date avoids a potential service disruption after that date. Standard HDD data disks (non-boot volumes) and ephemeral OS disks are not affected.

1. Stop using Standard HDD OS disks for new virtual machines.
2. Migrate existing HDD OS disks to Standard SSD or Premium SSD before the retirement date. See Convert managed disks storage between different disk types.
3. Review the Azure Disk Storage billing guidance to select the disk type that fits the workload and budget.
4. Microsoft states that additional details are shared in its public documentation before the retirement date.