A company deploys a set of Huawei distributed storage in data center 4 and data center B. It mainly uses block services to carry application-related services such as databases and virtual machines, and uses the block service active-active feature to cooperate with upper-layer applications to ensure business continuity sex.
For this dual-active scenario, which of the following options are correct? (Multiple Choice)

During the process of the engineer replace the storage array controller, which of the following description is wrong?

After analyzing the performance information of the host and storage system, an engineer found that the performance bottleneck appeared in the HBA (Host Bus Adaptar) card.
What should engineers investigate? (Multiple Choice)

Regarding the description of Huawei OceanStor all-flash storage system, which one is wrong?

A company has purchased a new batch of mainframes and storage devices, and will deploy the company's important business according to the plan. The storage network is required to have low latency, high performance, large bandwidth, lossless transmission, and can support Ethernet transmission. Which protocol should be selected?