Huawei all-flash storage devices need to be planned and designed before deployment. Which of the following need to be planned during storage networking? (Multiple choice)

Huawei Distributed Storage Object Service provides finely controlled Qos capabilities, and provides tenant and bucket-level TPS and bandwidth granular service quality control. What operations can be precisely controlled? (Multiple choice)

Huawei OceanStor 9000 uses the DFS to consolidate disk resources of all nodes, providing a unified namespace.

Which of the following statements are correct?
1. Backup can prevent misoperations and system issues.
2. DR can prevent production data loss in catastrophic data center failures.

The back-end storage network interfaces of FusionStorage blocks, files and object storage clusters must be completely isolated. When physical clusters corresponding to multiple services share a pair of CE6800 switches, VLAN need to be divided to distinguish the back-end storage networks of different clusters.