Which of the following descriptions of virtual machine high availability (HA) is correct? (Multiple choice)

Which of the following descriptions of virtual machine high availability (HA) is correct? (Multiple choice)
A . HA functionality provides easy-to-use, cost-effective high availability for applications running on all virtual machines in the cluster
B . After turning on the HA function, CVM will continue to monitor the running status of all server hosts and virtual machines in the cluster. When a host or virtual machine fails, CVM will respond immediately and start all affected hosts on other available hosts in the cluster. virtual machine
C . After the HA function is enabled in the cluster, all hosts in the cluster are required to mount the system shared storage.
D . After the cluster enables the HA function, all virtual machines under the cluster have HA enabled, and the HA function of a single virtual machine cannot be turned off.

Answer: ABC