Linux backup running on VMware has been backed up using Veeam. Getting the error "failed to modify disk" when trying to restore the Linux VM to Hyper-V. Any thoughts?

Hi Admin,

Hope you're doing well.

The error "failed to modify disk" when trying to restore a Linux VM from VMware to Hyper-V using Veeam could be caused by several factors. Here are some possible reasons and troubleshooting steps to resolve the issue:

1. Ensure that the disk format used by the Linux VM in VMware is compatible with Hyper-V. Hyper-V typically uses the VHD (Virtual Hard Disk) or VHDX format. If the VM disks are in a different format (e.g., VMDK), they may need to be converted before restoring to Hyper-V.
2. Check if the disk size of the Linux VM in VMware exceeds the maximum size supported by Hyper-V. Hyper-V has size limitations for virtual hard disks, and if the VM disks are too large, the restore process may fail. You may need to resize the disks before restoring.
3. Ensure that the user account used to perform the restore operation has sufficient permissions to modify disks on the Hyper-V host. The account should have appropriate permissions in Hyper-V Manager or be a member of the Hyper-V Administrators group.
4. Verify that there are no network connectivity issues between the Veeam backup server and the Hyper-V host. Ensure that both systems can communicate with each other over the network and that there are no firewall rules or network configurations blocking the communication.
5. Double-check the configuration settings in Veeam Backup & Replication to ensure that the restore job is configured correctly for Hyper-V. Make sure that the target Hyper-V host is specified correctly and that any required options or settings are configured properly.
6. Review the Veeam logs for more detailed error messages or clues about what might be causing the "failed to modify disk" error. The logs may provide additional information that can help diagnose the issue.
7. Ensure that both Veeam Backup & Replication and Hyper-V are up to date with the latest software updates and patches. Sometimes, issues like this can be resolved by installing the latest updates.
8. If you're unable to resolve the issue using the above steps, consider contacting Veeam Support for assistance. They can provide further guidance and troubleshooting tailored to your specific environment and configuration.

Best Regards