Azure Backup
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Hi,
Anyone has any inputs on this to assist us.
Thanks,
Narendra.
Moving the VM from one RSV (LRS) to another RSV (ZRS)
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Narendra Kandula
5
Reputation points
We have a requirement is where to
- Preserve the existing backups of the VM in the current RSV.
- Maintain immutability on the RSV.
- Move the VM’s backup to another RSV (from LRS to ZRS).
I have tested and followed below:
- We attempted to move the existing test VM from a ZRS-based Recovery Services Vault (RSV) to an LRS-based RSV after deleting the backup item.
- We then created a new test VM (LRSTest) and added it to the LRSTest RSV. A manual backup was initiated, which completed in approximately 25 minutes.
- Afterward, we stopped the backup for the LRSTest VM and attempted to delete the backup item. Due to immutability being enabled, we were unable to delete the backup item.
This confirms that with immutability enabled, it is not possible to delete the backup item, which in turn prevents moving the VM from an LRS RSV to a ZRS RSV.
- We also reviewed the Microsoft documentation you shared during the call and noted that if you wish to preserve previous backups and still move the VM to another RSV, the VM must first be unprotected and moved to a different resource group.
- However, this is not a viable option in your case due to multiple VMs being hosted in the same resource group.
Azure Backup
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Suchitra Suregaunkar 170 Reputation points Microsoft External Staff Moderator2025-08-07T07:17:43.0033333+00:00 Hello Narendra Kandula,
Thank you for posting your query on Microsoft Q&A platform.
It is not possible to move existing VM backup data from one Recovery Services Vault (RSV) to another such as from an LRS-based RSV to a ZRS-based RSV if immutability is enabled, because immutability prevents deletion of backup items, which is a prerequisite for reconfiguring backup in a new vault.
Azure Backup does not support transferring backup data between RSVs, and while unprotecting the VM and moving it to a different resource group is a workaround and it is not feasible in scenarios where multiple VMs reside in the same group.
The recommended approach is to retain existing backups in the current immutable RSV and initiate new backups in a ZRS-based RSV, effectively maintaining two vaults for historical and future data.
This approach ensures that historical backup data remains secure and compliant and Future backups take advantage of ZRS redundancy for greater durability.
As a result, we will use two RSV, one for historical data (LRS + immutability) and one for all new backups (ZRS) to maintain continuity and compliance.
Referral links: https://learn.microsoft.com/en-us/azure/backup/backup-create-recovery-services-vault
Thanks,
Suchitra.
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