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ATSUKOYONEDA-9020 asked vipullag-MSFT edited

Estimate snapshots of VMs and managed disks

I'm thinking of using Azure Backup to take snapshots of VMs and managed disks.
Is it correct that I don't need to add the snapshot fee to the VM and Managed Disk since the snapshot fee is included in the Azure Backup quote?

azure-virtual-machinesazure-managed-disks
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AndreasBaumgarten avatar image
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AndreasBaumgarten answered AndreasBaumgarten edited

Hi @ATSUKOYONEDA-9020 ,

Maybe a short view on the Azure Backup process is helpful to clarify:
https://docs.microsoft.com/en-us/azure/backup/backup-azure-vms-introduction

In short:
Azure Backup creates a snapshot of the VM including all disks
Snapshot will be copied to the vault

When the data transfer is complete, the snapshot is removed, and a recovery point is created.

This means the snaphot created by Azure Backup is not available anymore after the recovery point is created.
Restore will be done by using the recovery point. The created snapshot is only for Azure Backup process and not available after the backup is done for any other purpose.

All these costs are in the Azure Backup quote.



There is another option to create snapshots of a managed disk: https://docs.microsoft.com/en-us/azure/virtual-machines/managed-disks-overview#managed-disk-snapshots
This is not related to Azure Backup! Neither to the Azure Backup process nor to the costs of Azure Backup.
This method to create snapshots I mean with my statement "If you create additional snapshots of the VM, independent from Azure Backup you have to add the snapshot fee."

Snapshots are billed based on the used size.


(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)

Regards
Andreas Baumgarten









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AndreasBaumgarten answered

Hi @ATSUKOYONEDA-9020 ,

I "read it the same": the fee for the snapshot is included in the Azure Backup quote if you use Azure Backup. If you create additional snapshots of the VM, independent from Azure Backup you have to add the snapshot fee.


(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)

Regards
Andreas Baumgarten

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ATSUKOYONEDA-9020 answered pituach commented

Thanks @AndreasBaumgarten ,

We are assuming that Azure Backup will restore the snapshot, so we don't need to store it separately.
So, it looks like we don't need to estimate it separately.

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Hi,

(1) did you noticed the last part If you create additional snapshots of the VM, independent from Azure Backup you have to add the snapshot fee. ?

The cost which is covered is the default backups created by the Azure Backup.

(2) Personally in most cases I like to backup the disk which include important data in addition to the Azure Backup. I have no case that I needed it when Azure Backup was enabled but this make feel better in some cases. The VM is less important for me then the disks which include the data.

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Thanks,
 
Does the default backup in Azure backup include VM and disk snapshots?
If I can just keep these snapshots in Azure Backup, I don't need additional snapshots, is that correct?

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pituach avatar image pituach ATSUKOYONEDA-9020 ·

The disks of the virtual machine are part of the virtual machine and when you use the Azure backup on the VM then it must backup the "parts" of the VM = the disks

Check what @AndreasBaumgarten added in his last message. I think that it explains it

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