You plan to back up an Azure virtual machine named VM1.
You discover that the Backup Pre-Check status displays a status of Warning.
What is a possible cause of the Warning status?
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A. B. C. D.A
The Warning state indicates one or more issues in VM's configuration that might lead to backup failures and provides recommended steps to ensure successful backups. Not having the latest VM Agent installed, for example, can cause backups to fail intermittently and falls in this class of issues.
https://azure.microsoft.com/en-us/blog/azure-vm-backup-pre-checks/The Backup Pre-Check feature in Azure provides administrators with a way to verify that the virtual machine they intend to back up meets the requirements for successful backup. It checks various aspects of the virtual machine, including its configuration and the software installed on it, and generates a report with the results.
When the Backup Pre-Check status displays a status of Warning, it means that there is a potential issue that may affect the backup operation. The following options are provided as possible causes of the Warning status:
A. VM1 does not have the latest version of WaAppAgent.exe installed. The WaAppAgent.exe is a component of the Azure VM Agent that is responsible for communication between the virtual machine and Azure. If the virtual machine does not have the latest version of this component installed, it may cause issues with backup operations. This can be resolved by ensuring that the VM has the latest version of the Azure VM Agent installed, which includes the latest version of the WaAppAgent.exe component.
B. VM1 has an unmanaged disk. In Azure, virtual machine disks can be managed or unmanaged. Managed disks provide additional features such as snapshots and managed backups, which make them a better choice for backup operations. If the virtual machine has an unmanaged disk, it may cause issues with backup operations, and the Backup Pre-Check status may display a Warning. To resolve this, the virtual machine should be migrated to managed disks.
C. VM1 is stopped. If the virtual machine is stopped, the backup operation may fail because the virtual machine must be in a running state for the backup to succeed. The Backup Pre-Check status may display a Warning to indicate this. To resolve this, the virtual machine should be started before attempting to run the backup operation.
D. A Recovery Services vault is unavailable. A Recovery Services vault is a logical container for backup data in Azure. If the Recovery Services vault is unavailable, it may cause issues with backup operations, and the Backup Pre-Check status may display a Warning. To resolve this, the Recovery Services vault should be checked for any issues, and any issues should be resolved before attempting to run the backup operation.
In summary, the possible causes of a Backup Pre-Check status of Warning include an outdated version of the WaAppAgent.exe component, the use of unmanaged disks, a stopped virtual machine, or an unavailable Recovery Services vault. Administrators should investigate the specific warning message to determine the cause and take the appropriate actions to resolve the issue before attempting to back up the virtual machine.