Does it need restart ESXi Host server if using Update Manager

Hi Guy,

My platform below:

vCenter 6.7

3 x ESXi Host server v6.7 Update 01 (Cluster enabled)

I migrate out all running vm to other host, then I using Update Manager to update the ESXi host server form ESXi v6.7 Update 01 to 03, it is no prompt for ESXi host restart, and the build already updated show in vCenter.

So, may I ask using Update Manager to patch ESXi host server, does it need restart the ESXi server?

Regards

Thanks...KEN