maximum units(The maximum percentage or number of units that a resource is available to be scheduled for any tasks. The maximum units value indicates the highest capacity at which the resource is available for work; the default value is 100 percent)
resource maximization(One of two placement goals during virtual machine placement. When resource maximization is the goal, the suitability of each virtual machine host is rated based on the purpose of consolidating multiple low-utilization workloads on a single host. Virtual machine placement in these cases involves determining the capacity limits for a particular host and placing virtual machines on that host until the limits are reached)
maximum concurrent sessions(A configuration setting that represents the maximum number of client sessions that can be active at the same time for service instances in memory)