In Huawei FusionSphere, which of the following functions can be implemented for disk thin provisioning? (Multiple choice)

In Huawei FusionSphere, which of the following functions can be implemented for disk thin provisioning? (Multiple choice)
A . The virtual storage thin provisioning is completely independent of the operating system and hardware. Therefore, as long as the virtual image management system is used, virtual storage thin provisioning can be provided.
B . Providing early warning of data storage capacity. You can set a threshold. When the storage capacity exceeds the threshold, an alarm is generated.
C . Provides virtual disk space monitoring and recovery
D . Currently does not support virtual machine disk recovery in NTFS format

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Answer: ABC