One Customer Purchased Two Huawei OceanStor 9000 Storage Devices and Deployed

One customer purchased two Huawei OceanStor 9000 storage devices and deployed them in A and B cities respectively and configured the InfoReplicator function. Regarding production site A data reliability, which of the following descriptions is wrong?

A) Due to system upgrades, you need to make a master-slave switchover for the remote replication pair that has been created, and the following conditions need to be met: 1. remote copy pair health status is normal, and the copy link is normal 2. from the directory has been canceled write protection
B) If the replication link is down, you can only modify the pair attribute in the cluster where the home directory of production site A resides. After the replication link is restored, the modified The pair attribute is automatically updated to the production site from the directory
C) Set the channel authentication IP address, which is the static front-end service IP address of any node in the remote cluster, and is used to establish a replication area channel Connection, this node must be in the copy area
D) The channel authentication password can be modified. After the password is modified, if the copy link is disconnected, you need to manually re-enter the new password and keep the password The password of the originating and receiving ends of the channel in the system is consistent so that the duplicated link can be recovered