The Huawei OceanStor hybrid flash storage system used in a customer's business application has a total of three POOLs, all of which are 8D+1P RAID5. A business interruption occurred on a certain day, and engineers found some scenarios that caused the failure in the system by analyzing the logs.
Which of the following scenarios will cause the service interruption of host access to storage? (Multiple Choice)

Hot swapping refers to replacing, adding, upgrading, or removing hardware devices without shutting down the system or power. The hot-plugging of PCIE is a "No Surprise" strategy, that is, the user must notify the system in advance when issuing an interface card.

Company A purchases Huawei data protection all-in-one appliances and plans to install and deploy them in a distributed manner. Which of the following descriptions about the distributed deployment, installation and configuration process of server software are incorrect? (Multiple Choice)

Huawei OceanStor Pacific series storage systems use link aggregation-based technology to achieve transmission link redundancy. When the cluster uses the IB network, which of the following about the number of the IB Ethernet ports needs to be configured on the back-end of the node storage network?

Taking Huawei OceanStor distributed storage as an example, which options are correct in the description of the storage interface layer in the software architecture? (Multiple Choice)