Compared with traditional physical servers, upgrading an ECS instance is much easier. Which of the following statements about upgrading an ECS instance is false?
A.
You can upgrade the CPU, memory, and bandwidth.
B.
Upgrading the configuration of the ECS instance requires no' redeployment or data migration.
C.
Upgrading network bandwidth does not require the ECS instance to restart.
D.
You can change an instance's operating system without rebooting.
Changing an instance’s operating system requires creating a custom image or using a public image, and then replacing the system disk of the instance. This process will cause the instance to restart. Therefore, this statement is false. References: ECS User Guide: Replace the system disk (non-public image) and ECS User Guide: Replace the system disk (public image)
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