Can a Server Be Restored Using Its Backups After It Is Changed?

Yes. If a server has been backed up and then changed (adding, deleting, or expanding disks), its backups can still be used to restore data. You are advised to back up data again after the change.

If you have added a disk after a backup and then use the backup to restore data, data on the new disk will not change.

If you have deleted a disk after a backup and then use the backup to restore data, data on the deleted disk cannot be restored.

If you have changed the server OS after a backup and then use a system disk backup to restore the original system disk, the system disk data cannot be restored because the disk UUID has changed. If the entire server is backed up and you changed the server OS, the backup can be used to restore data only after you have changed back to the original OS.