In this step, we select the servers that can be used in this plan. Check the servers you want and click the transfer button to add them to the list on the right. The priority of the servers is by default on the best datastore. You can give this priority to the order of the servers and also change the order by dragging and dropping the servers.
The best datastore contains the least number of virtual machines powered on. The more virtual machines on a datastore, the poorer the performance. Therefore, the best option for Deploy is the most empty datastore.