Create an Azure Managed Disk from a VHD Blob

[Image Credit: OpenClipart]

This post will show you how to create a managed disk from a VHD blob file, such as one you’ve uploaded or restored from a virtual machine backup. In my example, I have restored the virtual hard disks of an Azure VM to a storage account called aidanfinnrestore. I am going to create a new managed disk from the VHD blob, and (in another post) create a new VM from the managed disk that I am creating in this post.

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Open the Azure Portal, and go to Disks in the navigation bar on the left – this is where all managed disks are listed. Click + Add. A Create Manage Disk blade appears. Enter the following information:

  • Name: Give the new managed disk a name. My naming standard names the disk after the VM with a suffix to denote a role. In my example, it’s an OS disk.
  • Subscription: Select the subscription in your tenant. Note that you must create the managed disk in the same subscription as the storage account that contains the blob – you can always move the disk to a different subscription later.
  • Resource Group: Restore the disk to a new or existing resource group – typically this is where the virtual machine will be.
  • Location: Pick the region of the desired VM, which must also match the storage account.
  • Account Type: What kind of managed disk do you want – Standard (HDD) or Premium (SSD). You can change this later, one of the nice features of managed disks.
  • Source Type: I have selected Storage Blob – this is how the restored (or uploaded) VHD is stored.
  • Source Blob: Click browse, and navigate to & select the VHD blob that was restored/uploaded.
  • OS Type: If this is a data disk then select either Windows or Linux, depending on the guest OS in the VHD.
  • Size: To make like easy, select the size of the existing blob. I restored a managed disk to a blob, so I went with the original size of 128 GiB.

Once you’re happy with all the settings, click Create. In my case, with a 128 GiB VHD, the creation just around 30 seconds:

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Now you can either create a VM from the disk or attach it as a data disk to an existing VM in the Azure Portal – life is easy with managed disks!

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