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Merge pull request #295923 from AbhishekMallick01/Mar-7-2025-EEE1
Addressed EEE doc ask #30307956
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articles/backup/backup-support-matrix-iaas.md

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title: Support matrix for Azure VM backups
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description: Get a summary of support settings and limitations for backing up Azure VMs by using the Azure Backup service.
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ms.topic: reference
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ms.date: 06/10/2025
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ms.date: 06/12/2025
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ms.custom:
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- references_regions
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- linux-related-content
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**Replace existing** | You can restore a disk and use it to replace a disk on the existing VM.<br/><br/> The current VM must exist. If it has been deleted, you can't use this option.<br/><br/> Azure Backup takes a snapshot of the existing VM before replacing the disk, and it stores the snapshot in the staging location that you specify. Existing disks connected to the VM are replaced with the selected restore point.<br/><br/> The snapshot is copied to the vault and retained in accordance with the retention policy. <br/><br/> After the replace-disk operation, the original disk is retained in the resource group. You can choose to manually delete the original disks if they aren't needed. <br/><br/>This option is supported for unencrypted managed VMs and for VMs [created from custom images](/azure/virtual-machines/windows/tutorial-custom-images). It's not supported for unmanaged disks and VMs, classic VMs, and [generalized VMs](/azure/virtual-machines/capture-image-resource).<br/><br/> If the restore point has more or fewer disks than the current VM, the number of disks in the restore point will only reflect the VM configuration.<br><br> This option is also supported for VMs with linked resources, like [user-assigned managed identity](../active-directory/managed-identities-azure-resources/overview.md) and [Azure Key Vault](/azure/key-vault/general/overview).
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**Cross Region (secondary region)** | You can use cross-region restore to restore Azure VMs in the secondary region, which is an [Azure paired region](../reliability/cross-region-replication-azure.md).<br><br> You can restore all the Azure VMs for the selected recovery point if the backup is done in the secondary region.<br><br> This feature is available for the following options:<br> - [Create a VM](./backup-azure-arm-restore-vms.md#create-a-vm) <br> - [Restore disks](./backup-azure-arm-restore-vms.md#restore-disks) <br><br> We don't currently support the [Replace existing disks](./backup-azure-arm-restore-vms.md#replace-existing-disks) option.<br><br> Backup admins and app admins have permissions to perform the restore operation on a secondary region.
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**Cross Subscription** | Allowed only if the [Cross Subscription Restore property](backup-azure-arm-restore-vms.md#cross-subscription-restore-for-azure-vm) is enabled for your Recovery Services vault. <br><br> You can restore Azure Virtual Machines or disks to a different subscription within the same tenant as the source subscription (as per the Azure RBAC capabilities) from restore points. <br><br> This feature is available for the following options:<br> - [Create a VM](./backup-azure-arm-restore-vms.md#create-a-vm) <br> - [Restore disks](./backup-azure-arm-restore-vms.md#restore-disks) <br><br> Cross Subscription Restore is unsupported for: <br> - [Snapshots](backup-azure-vms-introduction.md#snapshot-creation) tier recovery points. It's also unsupported for [unmanaged VMs](backup-azure-arm-restore-vms.md#restoring-unmanaged-vms-and-disks-as-managed) and [VMs with disks having Azure Encryptions (ADE)](backup-azure-vms-encryption.md#encryption-support-using-ade). <br> - [VMs with CMK encrypted disks](backup-azure-vms-encryption.md).
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**Cross Zonal Restore** | You can use cross-zonal restore to restore Azure zone-pinned VMs in available zones. You can restore Azure VMs or disks to different zones (one of the Azure RBAC capabilities) from restore points. Note that when you select a zone to restore, it selects the [logical zone](../reliability/availability-zones-overview.md#zonal-and-zone-redundant-services) (and not the physical zone) as per the Azure subscription you will use to restore to. <br><br> This feature is available for the following options:<br> - [Create a VM](./backup-azure-arm-restore-vms.md#create-a-vm) <br> - [Restore disks](./backup-azure-arm-restore-vms.md#restore-disks) <br><br> Cross-zonal restore is unsupported for [snapshots](backup-azure-vms-introduction.md#snapshot-creation) of restore points. It's also unsupported for [encrypted Azure VMs](backup-azure-vms-introduction.md#encryption-of-azure-vm-backups).
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**Cross Zonal Restore** | You can use cross-zonal restore to restore Azure zone-pinned VMs in available zones. You can restore Azure VMs or disks to different zones (one of the Azure RBAC capabilities) from restore points. Note that when you select a zone to restore, it selects the [logical zone](../reliability/availability-zones-overview.md#zonal-and-zone-redundant-services) (and not the physical zone) as per the Azure subscription you will use to restore to. <br><br> This feature is available for the following options:<br> - [Create a VM](./backup-azure-arm-restore-vms.md#create-a-vm) <br> - [Restore disks](./backup-azure-arm-restore-vms.md#restore-disks) <br><br> Cross-zonal restore is unsupported for [snapshots](backup-azure-vms-introduction.md#snapshot-creation) of restore points. <br><br> Cross-zonal restore doesn't support restoring [encrypted Azure VMs](backup-azure-vms-introduction.md#encryption-of-azure-vm-backups) directly. If you perform a restore, the restored VM uses **SSE encryption** by default. You must manually reapply **CMK encryption** to the restored VM after the restore process is complete.
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## Support for file-level restore
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