You can place a NetWare virtual machine in an existing tree or as the first server in a new tree. However, the performance of virtualized NetWare might not be at the same level as physical NetWare. In a large tree, it may be preferable to add your NetWare virtual machine to an existing tree located on a physical NetWare server.
Because virtualized servers might be started and stopped more often than they would normally be on physical servers, we recommend that the master replica (usually the first server in a tree) be placed on a system that is running at all times. For more information about Master Replicas, see Replicas in the Edirectory documentation.