diff --git a/ovn/Vagrantfile b/ovn/Vagrantfile
index cdf94b9..7b2a9e7 100644
--- a/ovn/Vagrantfile
+++ b/ovn/Vagrantfile
@@ -1,10 +1,14 @@
 # -*- mode: ruby -*-
 # vi: set ft=ruby :
 
-# Specify Vagrant version, Vagrant API version, and Vagrant clone location
-Vagrant.require_version ">= 1.6.0"
-VAGRANTFILE_API_VERSION = "2"
+# Specify Vagrant version, Vagrant API version, Vagrant clone location,
+# and default Vagrant provider
+Vagrant.require_version '>= 1.6.0'
+VAGRANTFILE_API_VERSION = '2'
+ENV['VAGRANT_DEFAULT_PROVIDER'] = 'vmware_fusion'
 ENV['VAGRANT_VMWARE_CLONE_DIRECTORY'] = '~/.vagrant'
+#ENV['VAGRANT_DEFAULT_PROVIDER'] = 'virtualbox'
+#ENV['VAGRANT_DEFAULT_PROVIDER'] = 'vmware_appcatalyst'
 
 # Require 'yaml' module
 require 'yaml'
@@ -19,22 +23,38 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
   config.ssh.insert_key = false
 
   # Iterate through entries in YAML file to create VMs
-  servers.each do |servers|
-    config.vm.define servers["name"] do |srv|
+  servers.each do |server|
+    config.vm.define server['name'] do |srv|
 
       # Don't check for box updates
       srv.vm.box_check_update = false
-      srv.vm.hostname = servers["name"]
-      srv.vm.box = servers["box"]
+      srv.vm.hostname = server['name']
+      srv.vm.box = server['box']
 
-      # Disable default synced folder
-      srv.vm.synced_folder ".", "/vagrant", disabled: true
+      # Configure default synced folder (disable by default)
+      if server['sync_disabled'] != nil
+        srv.vm.synced_folder '.', '/vagrant', disabled: server['sync_disabled']
+      else
+        srv.vm.synced_folder '.', '/vagrant', disabled: true
+      end #if servers['sync_disabled']
 
-      # Configure VMs with RAM and CPUs per settings in servers.yml
+      # Configure CPU & RAM per settings in servers.yml (Fusion)
       srv.vm.provider :vmware_fusion do |vmw|
-        vmw.vmx["memsize"] = servers["ram"]
-        vmw.vmx["numvcpus"] = servers["vcpu"]
-      end # srv.vm.provider
+        vmw.vmx['memsize'] = server['ram']
+        vmw.vmx['numvcpus'] = server['vcpu']
+      end # srv.vm.provider vmware_fusion
+
+      # Configure CPU & RAM per settings in servers.yml (AppCatalyst)
+      srv.vm.provider :vmware_appcatalyst do |vmw|
+        vmw.vmx['memsize'] = server['ram']
+        vmw.vmx['numvcpus'] = server['vcpu']
+      end # srv.vm.provider vmware_appcatalyst
+
+      # Configure CPU & RAM per settings in servers.yml (VirtualBox)
+      srv.vm.provider :virtualbox do |vb|
+        vb.memory = server['ram']
+        vb.cpus = server['vcpu']
+      end # srv.vm.provider virtualbox
     end # config.vm.define
   end # servers.each
 end # Vagrant.configure
diff --git a/ovn/servers.yml b/ovn/servers.yml
new file mode 100644
index 0000000..1cc67de
--- /dev/null
+++ b/ovn/servers.yml
@@ -0,0 +1,16 @@
+---
+- name: "ovn-01"
+  box: "slowe/ubuntu-trusty-x64"
+  ram: "512"
+  vcpu: "1"
+  ip_addr: "192.168.100.101"
+- name: "ovn-02"
+  box: "slowe/ubuntu-trusty-x64"
+  ram: "512"
+  vcpu: "1"
+  ip_addr: "192.168.100.102"
+- name: "ovn-03"
+  box: "slowe/ubuntu-trusty-x64"
+  ram: "512"
+  vcpu: "1"
+  ip_addr: "192.168.100.103"