Which of the following statements are correct about the HyperMetro arbitration server model? (Multiple choice)

Which feature of Huawei OceanStor 9000 can provide file system snapshots?

Before planning and designing the project, it is necessary to collect information on the project. Which of the following information collection descriptions are correct? (Multiple choice)

The backup situation of a certain enterprise application is that on February 1, a single-selected full backup of all files and directories was performed, February 2, February 3, February 4 Cumulative incremental backup was performed. On February 5, the business disk failed. Now I want to restore to the version on February 4. What backup files are needed?

In a remote replication, the size of the secondary LUN on the disaster recovery storage system is larger than or equal to that of the primary LUN on the production storage system.