The migration schemes based on software functions are: (Multiple Choice)

A company purchased two sets of Huawei all-flash storage, deployed in data center A and data center B respectively, and configured active-active for them. When data center B fails, DCL (Data change lg) can record data changes in data center A. After the failure is recovered, the changed data is synchronized to the storage device in data center B.

A customer's existing production environment server performance is relatively high, production network resources are relatively tight, and no snapshot license has been purchased for the generated storage. At present, the customer wants to introduce the backup service. Under the existing configuration, which backup networking method is recommended for the user?

In the Huawei OceanStor 9000 file system, which of the following description about the metadata is incorrect?

In a backup system, a backup job is automatically initiated by __________ to perform a backup.