Compared with ordinary file backup, the components that need to be deployed when deploying VMware backup are ___.

The municipal public security bureau of a city needs to periodically archive each police station's video surveillance data.
If the solution provided by Huawei OceanStor 9000 is used in this scenario, which node type should be recommended?

Suppose that you allocate 20 GB to a thin LUN, write 30 GB to the LUN, and then delete 25 GB data from it.
How large is the thin LUN now?

In an OceanStor 9000, InfoAllocator is used to allocate 1 GB of hard capacity quota for directory A and 2 GB of hard capacity quota for subdirectory B under directory A.
Which of the following statements are true? (Multiple Choice)

A company deploys a set of multi-select Huawei distributed storage in data center A and data center B.
It mainly uses block services to carry database, virtual machines and other application-related services, and uses block services to work with active-active features and upper-layer applications to ensure Business continuity. For this dual-active scenario, which of the following descriptions are correct? (Multiple choice)