A remote replication consistency group is in normal state.
Before initiating a primary/secondary switchover for that consistency group, which operation must be performed?

When accessing the Windows client of the Huawei Oceanstor 9000 cluster, which aspects of the client can be adjusted to improve access performance? (Multiple choice)

Which of the following statements about the SmartQuota feature of Huawei OceanStor all-flash storage are correct? (Multiple choice)

During data backup, data may be deduplicated to save space. For example, if data blocks A and B are the same, only one data block is physically stored, and the index corresponding to block A or B is deleted.

Store the data block in the cache first, and then de-duplicate the tree when the system is idle. The advantage is that it does not affect data transmission performance, but the disadvantage is that additional storage space is required."
Which deduplication technique is described above?