Single-choice Which one of the following descriptions about the trembling characteristics of Huawei Oceansor 9000 is incorrect?

Which feature can provide file system snapshot features?

Colleagues customize active-active disaster recovery solutions for customers. The customer already has a third-party storage system and plans to purchase a new OceanStor In 5300 V3, the two sets of equipment are placed in two data centers to implement active-active disaster recovery. The solution:

In the Huawei OceanStor backup solution, if the retention time and retention cycle of backup data are configured to be 13 days and 2, respectively, The actual backup is a 3-day cycle, so how many days are the data retained?

Which is the wrong description about the synchronous remote replication of the OceanStor V3 storage array?