Merge pull request #2715 from MicrosoftDocs/copilot/update-documentation-for-os-disks

Update Standard HDD OS disk retirement documentation

Author: prmerger-automator[bot]

articles/virtual-machines/disks-hdd-os-retirement.md

@@ -6,7 +6,7 @@ ms.service: azure-disk-storage
 ms.topic: how-to
 ms.date: 09/08/2025
 ms.author: rogarana
-
+ai-usage: ai-assisted
 ---
 
 # Migrate your Standard HDD OS disks by September 08, 2028
@@ -27,13 +27,15 @@ This retirement is only for the ability to use Standard HDD disks as OS disks. N
 
 ## What actions should I take?
 
+Stop creating new virtual machines with Standard HDD OS disks. Use Standard SSD or Premium SSD for new OS disks instead.
+
 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.
 
 If you have multiple subscriptions, use the [Disk Storage Center](https://portal.azure.com/#view/Microsoft_Azure_StorageHub/StorageHub.MenuView/~/DisksBrowse) to create a list. Add two filters, one for **Storage type** which should be equal to **Standard HDD LRS** and one for **OS type** which should equal to **Linux and Windows**. This produces a list of all Standard HDD OS disks across all your subscriptions. The **Owner** column is the name of the virtual machine that uses the listed Standard HDD OS disks.
 
 The Disk Storage Center still works for individual subscriptions. But, if you prefer, 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](disks-convert-types.md#change-the-type-of-an-individual-managed-disk) to either Standard SSD or Premium SSD disks.
+Once you have a list of Standard HDD OS disks, [convert your Standard HDD OS disks](disks-convert-types.md#change-the-type-of-an-individual-managed-disk) to either Standard SSD or Premium SSD disks. Review [Azure Disk Storage billing guidance](disks-understand-billing.md) to choose the most cost-effective disk type for your workloads.
 
 For technical questions and issues, contact support.
 

articles/virtual-machines/disks-types.md

@@ -35,7 +35,7 @@ The following table provides a comparison of the five disk types to help you dec
 | **Max disk size** | 65,536 GiB | 65,536 GiB |32,767 GiB | 32,767 GiB | 32,767 GiB |
 | **Max throughput** | 10,000 MB/s | 1,200 MB/s | 900 MB/s | 750 MB/s | 500 MB/s |
 | **Max IOPS** | 400,000 | 80,000 | 20,000 | 6,000 | 2,000, 3,000* |
-| **Usable as OS Disk?** | No | No | Yes | Yes | Yes |
+| **Usable as OS Disk?** | No | No | Yes | Yes | [Yes (retiring Sept 8, 2028)](disks-hdd-os-retirement.md) |
 
 \* Only applies to disks with performance plus enabled.