Azure Backup Where are my backup stored ?

Question

Hi All,

If my VM's are located in North Europe Z1 and I create an Azure recovery service vault in North Europe and chose LRS for the backup could you tell me that if and error occured in Z1 I will be able to get my VM restored in Z2 or should i use ZRS for the backup ?

Thanks

Answer 1

Hi @lhezon
Welcome to Microsoft Q&A, Thanks for asking question here...!
When creating an Azure Recovery Services vault in the North Europe region and choosing Locally Redundant Storage (LRS) for your backup, it is important to understand the implications of the redundancy options available:

1. Locally Redundant Storage (LRS): LRS replicates your data three times within a single data center (or availability zone). This means that if an error occurs in the specific data center (Z1 in your case), the data is protected against hardware failures within that data center. However, LRS does not protect against data center-wide or zone-wide failures. If the entire availability zone (Z1) experiences an outage, your backups may not be available because they are stored only within Z1.
2. Zone-Redundant Storage (ZRS): ZRS replicates your data across three availability zones within the same region. This means that even if one availability zone (such as Z1) experiences an outage, your data is still available in the other zones (such as Z2 and Z3). Using ZRS ensures higher availability and protection against zone-wide failures.

Given the above points, if you want to ensure that you can restore your VM in another availability zone (e.g., Z2) in case of a failure in Z1, you should use Zone-Redundant Storage (ZRS) for your backups. ZRS will provide you with the resiliency needed to recover from a zone-wide failure.

Here are some references from the Azure documentation that provide more details on storage redundancy options and best practices for backup and disaster recovery:

 These resources should help you understand the differences between LRS and ZRS and make an informed decision based on your redundancy and recovery requirements.

For better understanding please read these documents : https://learn.microsoft.com/en-us/azure/storage/common/storage-redundancy https://learn.microsoft.com/en-us/azure/backup/quick-backup-vm-portal

I hope this has been helpful! Your feedback is important so please take a moment to accept answers. If you still have questions, please let us know what is needed in the comments so the question can be answered. Thank you for helping to improve Microsoft Q&A!