HyperMetro is an active-active solution, which achieves the purpose of active-active in the entire solution through the design of multiple layers of active-active.
Which of the following descriptions about the active-active design of the storage layer of the HyperMetro architecture in data center A and data center B are correct? (Multiple Choice)

OceanStor Dorado uses ROW to write sequentially in large blocks. Each write request is written by allocating new Flash particles to achieve a balanced number of flash particles to erase and write.

After successfully hosting the external LUN, you can use the SmartMigration feature to migrate the data on the heterogeneous storage system to the local storage system, and use the local storage system to carry business data.

Regarding the remote replication technology of Huawei OceanStor all-flash storage, which of the following options can be supported? (Multiple Choice)

The customer's existing network database business runs on an OceanStor V3 storage, and the database uses 6 LUNs in total.
Now it is necessary to migrate the data on the storage to OceanStor 18000, and use the array-side function to complete the data migration. Which of the following statements are correct? (Multiple Choice)