appliation_router.js

App.ApplicationRoute = Ember.Route.extend({
    model: function() {
         return App.Pools.find();
    }
});

application_controller.js

App.ApplicationController = Ember.Controller.extend({
    init: function() {
        /* Ow boy this feels so wrong */
        App.Pools.find();

        App.Pools.find({}).then(function(obj) {
            var length = App.Pools.all().content.length;
            App.Global.set('pools', length);
        });

        App.Server.find();

        App.Server.find({}).then(function(obj) {
            var length = App.Server.all().content.length;
            App.Global.set('number', length);
        });
    }
});

pools.js

App.Pools = DS.Model.extend({
    poolName: DS.attr('string'),
    servers: DS.hasMany('App.Server')
});

server.js

App.Server = DS.Model.extend({
    hostUrl: DS.attr('string'),    
    pool: DS.belongsTo('App.Pools')
});