What Files Do I Need to Restore My Hyper-V VMs from a Backup?

Have you tried testing a restore? If you can't restore it, the backup isn't effective. Set up a small test VM. Restore it under a different name and disconnect it from any virtual switches so you don’t disrupt your production environment. Ideally, copying the files to Hyper-V Manager should restore the VM successfully.

Active Backup for Business does a great job with backups. It not only saves the .vhdx files but also captures the full VM, including configurations, checkpoints, and disk states as a unified snapshot. When you need to restore, just use the built-in restore option to point it to a new host and select your recovery point—super easy and no scrambling for files! Just remember to start the domain controller first and let Active Directory settle before firing up the other server. Make sure to let me know if you give this a shot!

It's essential to back up the entire virtual machine, not just the hard disk files. If you check Hyper-V Manager, you can find the default paths for your VMs and their disks. Ensure all the necessary files are in these folders and back up everything. The VM configuration is stored in the VMGS, VMRS, and VMCX files, so a complete folder backup is your best bet. Also, if your VMs were connected to any virtual switches, ensure those switches are recreated with the same names on your new system.

Consider using a backup solution like Veeam Community, which is free for up to 10 VMs. While you already have Synology, Veeam offers a neat feature where you can test-boot a VM straight from storage without a NIC, making it a great option for testing backups.

Do you have off-site backups as well? Think about scenarios like fire damage; those could really jeopardize your data. Always better to be safe and have copies stored off-site.