A customer uses block storage services and has the following requirements for backup networking. 1. The backup data stream does not occupy LUN resources. 2. Backup services do not affect user…

A customer uses block storage services and has the following requirements for backup networking. 1. The backup data stream does not occupy LUN resources. 2. Backup services do not affect user network performance. 3. Little impact on host business. 4. Good backup performance. Without considering the cost, which of the following maggot network architectures can meet the customer's requirements?