At least one node should be active for the Data Preparation Service to execute without being disabled.
When you shut down a node or a node goes down, it does not affect the Data Preparation Service as long as at least one node remains enabled in the grid. An active session will not be automatically recovered. An error will appear and the user must reconnect the session to continue. If all the nodes in a grid are removed or shut down, the Data Preparation Service will be disabled.