Implementation engineer A checks the interface module of Huawei hybrid flash storage OceanStor18000, which of the following statements are correct? (Multiple choice)

Before designing a backup solution, you must conduct surveys.
Which aspects should be considered in a survey? (Multiple Choice)

The Disaster Recovery Data Center Solution (Active-Active Mode) can be upgraded to the Disaster Recovery Data Center Solution (Geo-Redundant Mode), but needs extra devices.

Initiate quiescing of the application before the snapshot, and then trigger the hardware storage snapshot to create an application-consistent snapshot copy. Data is backed up through the snapshot backup copy, eliminating the data backup time window, completely without interrupting the production system business, and achieving the remote storage of data, which improves the reliability of the data.

Huawei OceanStor 9000 employs decentralization. Therefore, the Wushan distributed file system does not have performance bottlenecks. As the number of nodes increases, the storage capacity and the computing capability increase linearly, w hich in turn provides linearly increasing bandwidth and concurrency capabilities for users.