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Abhishek Mallick (LTIMINDTREE LIMITED)
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CSR for VMs statement updates
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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: conceptual
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ms.date: 05/15/2023
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ms.date: 07/05/2023
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ms.custom: references_regions
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ms.reviewer: sharrai
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ms.service: backup
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**Restore disk** | This option restores a VM disk, which can you can then use to create a new VM.<br/><br/> Azure Backup provides a template to help you customize and create a VM. <br/><br> The restore job generates a template that you can download and use to specify custom VM settings and create a VM.<br/><br/> The disks are copied to the resource group that you specify.<br/><br/> Alternatively, you can attach the disk to an existing VM, or create a new VM by using PowerShell.<br/><br/> This option is useful if you want to customize the VM, add configuration settings that weren't there at the time of backup, or add settings that must be configured via the template or PowerShell.
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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](https://azure.microsoft.com/resources/videos/create-a-custom-virtual-machine-image-in-azure-resource-manager-with-powershell/). It's not supported for unmanaged disks and VMs, classic VMs, and [generalized VMs](../virtual-machines/windows/capture-image-resource.md).<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](../key-vault/general/overview.md).
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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](../availability-zones/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 (preview)** | You can use cross-subscription restore to restore Azure managed VMs in different subscriptions.<br><br> You can restore Azure VMs or disks to any subscription from restore points. This is one of the Azure role-based access control (RBAC) capabilities. <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 [snapshots](backup-azure-vms-introduction.md#snapshot-creation) and [secondary region](backup-azure-arm-restore-vms.md#restore-in-secondary-region) restores. It's also unsupported for [unmanaged VMs](backup-azure-arm-restore-vms.md#restoring-unmanaged-vms-and-disks-as-managed), [encrypted Azure VMs](backup-azure-vms-introduction.md#encryption-of-azure-vm-backups), and [trusted launch VMs](backup-support-matrix-iaas.md#tvm-backup).
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**Cross Subscription (preview)** | You can use cross-subscription restore to restore Azure managed VMs in different subscriptions.<br><br> You can restore Azure VMs or disks to any subscription (within the same tenant as the source subscription) from restore points. This is one of the Azure role-based access control (RBAC) capabilities. <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 [snapshots](backup-azure-vms-introduction.md#snapshot-creation) and [secondary region](backup-azure-arm-restore-vms.md#restore-in-secondary-region) restores. It's also unsupported for [unmanaged VMs](backup-azure-arm-restore-vms.md#restoring-unmanaged-vms-and-disks-as-managed), [encrypted Azure VMs](backup-azure-vms-introduction.md#encryption-of-azure-vm-backups), and [trusted launch VMs](backup-support-matrix-iaas.md#tvm-backup).
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**Cross Zonal Restore** | You can use cross-zonal restore to restore Azure zone-pinned VMs in available zones.<br><br> You can restore Azure VMs or disks to different zones (one of 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-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) and [trusted launch VMs](backup-support-matrix-iaas.md#tvm-backup).
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## Support for file-level restore

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