In vSphere 6.7, you can change the VM power state in different ways. To change the power state, right-click the VM and select Power followed by the type of the state.
You have the following states available:

• Power On and Power Off: This function powers the VM on or off immediately without any interaction with the guest OS. Be careful when powering off the VM, because the process doesn't perform a clean shutdown of open files and there is the risk of corrupting files that are not closed properly.
• Suspend: This feature suspends the VM, freezing its current state. When the VM is resumed, it starts from the state that was suspended.
• Reset: This command emulates the reset button of a physical computer.
• Shut down guest OS: This is the correct command to use to shut down the guest OS since it avoids data corruption. This function is available if Virtual Machine Tools is installed on the VM.
• Restart guest OS: This command is available only if Virtual Machine Tools is installed on the VM and it allows a graceful restart of the guest OS.