您好， 

Hello, 

Azure IAAS VM备份位于区域内。您无法备份到其他区域。 

Azure IAAS VM Backup is within region. You cannot back up to a different region. 

请参阅Azure备份支持矩阵：  https://docs.microsoft.com/en-us / azure / backup / backup-support-matrix #vault-support

See Azure Backup Support matrix: https://docs.microsoft.com/en-us/azure/backup/backup-support-matrix#vault-support