| author | AbhishekMallick-MS |
|---|---|
| ms.service | azure-backup |
| ms.topic | include |
| ms.date | 01/28/2026 |
| ms.author | v-mallicka |
The following table lists the supported scenarios for Confidential VM backup:
| Scenario | Supportability |
|---|---|
| Virtual Machine size | v6-series is supported. v5-series isn't supported. |
| Region availability | Supported in UAE North, Korea Central. |
| Key rotation for backups | When key rotation occurs on a confidential virtual machine, the keys for the VM disks, related restore points, and snapshots update automatically. Known issue: The key rotation in this preview release might have performance issues or fail in the following scenarios: - More than 40 disks are attached to one DES when (only) restore points are associated with these disks. - If you also directly create disk snapshots outside of Azure backup for these disks connected to the same DES, this lowers the safe threshold of 40 disks to DES mapping. Recommendation: Keep the number of disks connected to each DES to a minimum until the issue is resolved. |
| Backup capabilities | - You can backup Confidential VMs with OS disk encryption only. - Backup and restore fail if the CVM v2 opt-out feature flag is enabled for your subscription. - Multi-disk crash consistent backup is unsupported. - Cross Region Restore is currently unsupported as CVM v6 VM size isn't generally available in Azure paired regions. |