A multi-machine service has a status of on or off, and is considered healthy if at least the minimum number of machines for each component type are powered on.
The status of the multi-machine service is based on the power state of its component machines.
When the number of machines that are powered on for a component type is lower than the minimum, the multi-machine service is considered unhealthy and its state is set to off.
Multi-machine service requests are reported as successful even if one or more of the component machine requests fail. You can find details about the full or partial success of a multi-machine service request on the Requests and Infrastructure tabs.