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Create a snapshot of the data disk from one virtual machine to another in Azure

In this article, we will create a snapshot of the data disk from one virtual machine and attach the disk to another virtual machine.

What is the snapshot?

Snapshot is basically taking the backup of the data disk at the specified time.

Implementation

In this article, we will work on the following steps

1. Create 2 virtual machines with the name "MYVM" and "MYVM1".

Picture showing 2 virtual machines in Azure

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2. Inside the virtual machine "MYVM", create a data disk.

Picture showing the data disk in the virtual machine

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3. Inside the data disk, create a notepad file and write some text in it.

Picture showing the notepad file created inside the virtual machine

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4. Click on the disk and inside it, click on the "Create snapshot".

Picture showing the Create snapshot button for creating the snapshot

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5. In the create screenshot screen, select the "Resource Group" and enter the "Name".

Picture showing the screen for creating the snapshot

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6. Finally, click on the "Review + Create" button and then click on the "Create" button.

7. Once the snapshot is created, go into the details of the snapshot. Inside the snapshot, click on the "Create Disk".

Picture showing the Create Disk button for creating the disk for the snapshot

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8. A screen will come to enter the disk details. Select the "Resource Group" and enter the "Disk name".

Picture showing the detail screen for creating the disk

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9. Finally, click on the "Review + Create" button and then click on the "Create" button.

10. Open PowerShell and write the following command to attach the existing disk to the virtual machine "MYVM1".

$rgName = 'RG'
$vmName = 'MYVM1'
$location = "East US" 
$dataDiskName = "backupdisk"
$disk = Get-AzDisk -ResourceGroupName $rgName -DiskName $dataDiskName 

$vm = Get-AzVM -Name $vmName -ResourceGroupName $rgName 

$vm = Add-AzVMDataDisk -CreateOption Attach -Lun 0 -VM $vm -ManagedDiskId $disk.Id

Update-AzVM -VM $vm -ResourceGroupName $rgName

11. Once the above commands are executed, the data disk is attached to the virtual machine "MYVM1".

Picture showing the data disk attached to the another virtual machine

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12. Now, login to the "MYVM1" and check the data disk for the notepad file that we have created in the other virtual machine.

Picture showing the text file created in the another virtual machine

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Posted By -	Karan Gupta

Posted On -	Tuesday, April 20, 2021

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