Increased usage in unmanaged disk

ITR 0 Reputation points
2023-03-28T07:38:04.01+00:00

We recently got an e-mail about increased usage in our unmanaged disk, and were warned that they would lose support in 2025. However, I cannot find any disks marked as "Disk (classic)" under "All resources" (only two labeled "Disk"). I am fairly certain I previously migrated both VMs, should I just ignore the e-mail and assume it was an error?

Azure Virtual Machines
Azure Virtual Machines
An Azure service that is used to provision Windows and Linux virtual machines.
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Azure Disk Storage
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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  1. Manu Philip 16,991 Reputation points MVP
    2023-03-28T09:17:07.7566667+00:00

    Have you searched for any unattached classic disks as follows:

    User's image

    Select Disks (classic) and search for any classic disks presented under the subscription. You may dlete the unattached disks from the page

    --please don't forget to upvote and Accept as answer if the reply is helpful--

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  2. Sumarigo-MSFT 43,806 Reputation points Microsoft Employee
    2023-03-28T09:21:20.62+00:00

    @ITR Welcome to Microsoft Q&A Forum, Thank you for posting your query here!

    Firstly, Refer to this article, how to find the unmanaged disk
    How to find if a Virtual Machine is using managed/Unmanaged disks in Azure

    It's possible that you have already migrated your VMs to managed disks, which is why you cannot find any disks marked as "Disk (classic)" under "All resources". However, to confirm this, you can check the disk type of your VMs by following these steps:

    1. Go to the Azure portal and select the Virtual Machines blade.
    2. Select the VM that you want to check.
    3. In the VM blade, select Disks under Settings.
    4. Check the disk type of each disk attached to the VM. If the disk type is "Managed", then the VM is using managed disks. If the disk type is "Unmanaged", then the VM is using unmanaged disks.

    If all the disks attached to your VMs are of type "Managed", then you have already migrated your VMs to managed disks and you can ignore the email. If you find any disks of type "Unmanaged", then you should migrate those disks to managed disks before September 30, 2025 to avoid any issues after the support for unmanaged disks is retired. You can follow the instructions in to migrate your VMs to managed disks.

    It could be a generic email.( If you have migrated your VMs to managed disks, you can safely ignore the email you received about increased usage in your unmanaged disk.)

    In 2017, we launched Azure managed disks. We've been enhancing capabilities ever since. Because Azure managed disks now have the full capabilities of unmanaged disks and other advancements, we'll begin deprecating unmanaged disks on September 13, 2022. This functionality will be fully retired on September 30, 2025.

    With managed disks, you don't have to worry about managing storage accounts for creating a disk, because Azure manages the storage accounts under the hood. The abstraction reduces maintenance overhead for you. Also, it allows managed disks to provide numerous benefits over unmanaged disks, such as better reliability, scalability, large disks, bursting, and shared disks. If you use unmanaged disks, start planning your Windows or Linux migration now. Complete the migration by September 30, 2025, to take advantage of Azure managed disks.
    **
    How does this affect me?**

    • As of June 30th, 2023, new subscriptions won't be eligible to create unmanaged disks.
    • As of September 30, 2023, existing customers won't be able to create new unmanaged disks.
    • On September 30, 2025, customers will no longer be able to start IaaS VMs by using unmanaged disks. Any VMs that are still running or allocated will be stopped and deallocated.

    What actions should I take?

    Start planning your migration to Azure managed disks today.

    1. Make a list of all affected VMs:
      • The VMs with Uses managed disks set to No on the Azure portal's VM pane are all the affected VMs within the subscription.
      • You can also query Azure Resource Graph by using the portal or PowerShell to view the list of all flagged VMs and related information for the selected subscriptions.
      • On February 28, 2020, we sent out emails to subscription owners with a list of all subscriptions that contain these VMs. Please use them to build this list.
    2. Learn more about migrating your VMs to managed disks. For more information, see Frequently asked questions about migrating to managed disks.
    3. For technical questions, issues, and help with adding subscriptions to the allowlist, contact support.
    4. Complete the migration as soon as possible to prevent business impact and to take advantage of the improved reliability, scalability, security, and new features of Azure managed disks.

    Please let us know if you have any further queries. I’m happy to assist you further.

    Please do not forget to "Accept the answer” and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.

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