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

Which of the following descriptions are the reasons for the rapid development of enterprise-level cloud storage? (Multiple choice)

A colleague is working on an active-active disaster recovery solution. Through testing the bandwidth of the arbitration server to the storage system at both ends is 4Mbit/s, the delay RTT is less than or equal to 40ms, and the packet loss rate is less than or equal to 1%. What will happen to this solution?

Users of object storage service (compatible with OpenStack Swift APIs) are managed and authenticated by the Keystone server. Registering, creating, and deleting an account must also be performed on the Keystone server.

Regarding the characteristics of a single file system in Huawei's distributed storage, which of the following descriptions are correct? (Multiple choice)