A company's data center deploys 2 sets of Huawei all-flash storage. The quorum server implements the active-active configuration of the two storages. The three front-end service application servers are interconnected with the storage through optical switches. Based on this scenario information, which of the following options are correct? (Multiple Choice)

Which technology in the active-active disaster recovery solution can realize the traffic allocation between servers in different regions on the WAN (including the Internet), and ensure that the best server is used to serve the customers closest to itself, thereby ensuring the quality of access?

For various storage product portfolios, Huawei has launched a series of data management software to support the management, operation and maintenance of different storages. Which of the following data includes? (Multiple Choice)

In OceanStor 9000, when using the InfoTier feature to migrate source files, the snapshot data of the source files will not be migrated between different storage levels along with the source files.

Which of the following statements about RAID 2.0 is correct? (Multiple Choice)