Which of the following descriptions are correct about Huawei OceanStor 9000's use of SMB3 Multi-Channel? (Multiple Choice)

After SmartMigration is configured, if the LUNID and data volume ID of the source LUN are 1 and 2 respectively, and the LUN ID and data volume ID of the target LDN are 3 and 4 respectively when the migration starts, the LUN ID of the source LUN and the target LUN after the migration is completed. and data volume ID are:

A multinational enterprise has a huge business, and customer business data is scattered in multiple locations, and the distance between the locations is greater than 1000km. The enterprise hopes to centrally manage the backup data of each site, so that users can analyze and mine all data without affecting the normal business. If any business site suffers a disaster, the enterprise can take over the business and perform data recovery. In this case, which disaster recovery backup solution should the enterprise choose?

Huawei OceanStor 9000 nodes, read and write performance from high to low, which of the following is the correct order?

The copychunk function means that when the client uses the SMB2.0/2.1/3.0 protocol, when the OceanStor 9000 performs file copying, it does not need to go through the client and is directly completed within the system at high speed. Which operations can trigger the copychunk function? (Multiple Choice)