4/27/2023 0 Comments Azure vm snapshot![]() ![]() ![]() New-AzureRmSnapshot -Snapshot $snapshot -SnapshotName $Name `Īt the time of writing you couldn’t overwrite or change the managed OS disk on an existing VM but you can create a new managed disk from a snapshot and then create a new VM from the managed disk. CreateOption Copy -Location $azureregion ![]() $snapshot = New-AzureRmSnapshotConfig -SourceUri $mandisk.Id ` $mandisk = Get-AzureRmDisk -ResourceGroupName $rsgName -DiskName $diskname To create a snapshot using PowerShell call the New-AzureRmSnapshot command along with New-AzureRmSnapshotConfig to configure the snapshot options. Take note of the export button, you can use it to export the managed disk to a VHD blob which can be used to create unmanaged disks. You can create snapshots in the Azure portal by selecting your managed disk from the disks main menu or the disks section on the VM blade. The one advantage of snapshots is the ability to overwrite the OS disk without recreating the VM but only for unmanaged disks at the time of writing. Snapshots can also be used as a backup strategy for VMs although Azure Backups provides better functionality with a lot less effort albeit a bit more expensive since you pay for the recovery vault. ![]() Once you have the snapshot you can use it to create new VMs or copies of the VHD blob while the source VM can be powered on again. Snapshots can be used to duplicate a VM relatively quickly since it is faster than copying a blob. You still have to shutdown the source VM to ensure consistency but creating the snapshot only takes a few seconds. These instructions are for Azure Resource Manager (ARM) virtual machines, for Azure Service Manager (ASM) virtual machines read this post. If you are looking for instructions to create and restore snapshots for unmanaged disks read this post. In post I’m going to take a look at creating and restoring Azure Virtual Machine snapshots for managed disks. Jonathan Boarman on Azure Blob Cache And Disk Performance.Francois Delport on Azure Blob Cache And Disk Performance.Ralph Herold on Creating And Restoring Azure Virtual Machine Snapshots For Managed Disks.Francois Delport on Creating And Restoring Azure Virtual Machine Snapshots For Managed Disks. ![]()
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