Which of the following is correct of the FT technology and HA mechanism in FusionCompute?
A . From the length of business interruption, FT is longer than HA
B . HA refers to the redundant configuration of the primaryand standby dual machine. When the primary virtual machine fails, the standby virtual machine quickly takes over the primary virtual machine.
C . HA migration virtual machine can ensure uninterrupted business
D . FT technology requires real-time data synchronization between primary and standby dual virtual machines
Answer: D