diff --git a/.gitignore b/.gitignore
index e06f989..61c70b8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 .DS_Store
 packer_cache
 packer/builds
+Volumes/*
diff --git a/README.md b/README.md
index c3379a5..127b48b 100644
--- a/README.md
+++ b/README.md
@@ -3,30 +3,131 @@
 [Playa Mesos][8] helps you quickly create [Apache Mesos][1] test environments.
 This project relies on [VirtualBox][5], [Vagrant][6], and an Ubuntu box image
 which has Mesos and [Marathon][2] pre-installed. The box image is downloadable for your
-convenience, but it can also be built from source using [Packer][9].
+convenience, but it can also be built from source using [Packer][9].  There is an external volume capability when using
+with VirtualBox provided through [REX-Ray](https://github.com/emccode/rexray).
 
 As an alternative to VirtualBox, it's possible to build and run the image on
 VMware [Fusion](https://www.vmware.com/products/fusion/) or [Workstation](https://www.vmware.com/products/workstation/).
 
 ## Requirements
 
-* [VirtualBox][5] 4.2+
+* [VirtualBox][5] 5.0.10+
 * [Vagrant][6] 1.3+
 * [git](http://git-scm.com/downloads) (command line tool)
 * [Packer][9] 0.5+ (optional)
 * VMware [Fusion](https://www.vmware.com/products/fusion/) or [Workstation](https://www.vmware.com/products/workstation/) (optional)
 * [Vagrant Plugin for VMware Fusion or Workstation](https://www.vagrantup.com/vmware) (optional)
 
+## Configuration
+The `config.json` file holds all of the configurable parameters.  By default
+there is one host deployed running the master and slave services.  Additionally
+both Chronos and Marathon frameworks are running.  Set the appropriate hostnames, IP
+addresses, VM settings, and other parameters in this file.
+
+### Example All-In-One Master
+```json
+{
+  "platform": "virtualbox",
+  "box_name": "playa_mesos_ubuntu_14.04_201601041324",
+  "base_url": "http://downloads.mesosphere.io/playa-mesos",
+  "hosts": {
+    "mesos-master": {
+      "ip": "10.141.141.10",
+      "vm_ram": "2048",
+      "vm_cpus": "2"
+    }
+	}
+}
+```
+
+### Example All-In-One Master with External Volumes
+The `external_volumes` parameter can be introduced which leverages VirtualBox
+to provide external volume support for tasks.  The external volume functionality
+means that both the `Mesos containerizer` and `Docker containerizer` can
+define external volumes that get attached to tasks.  See [Mesos](https://github.com/emccode/mesos-module-dvdi)
+and [Docker](https://github.com/emccode/rexray) for examples.
+
+
+
+```json
+{
+  "platform": "virtualbox",
+  "box_name": "playa_mesos_ubuntu_14.04_201601041324",
+  "base_url": "http://downloads.mesosphere.io/playa-mesos",
+  "hosts": {
+    "mesos-master": {
+      "ip": "10.141.141.10",
+      "vm_ram": "2048",
+      "vm_cpus": "2",
+      "external_volumes":true
+    }
+	}
+}
+```
+
+### Example Master with 3 Slaves and External Volumes
+Optionally a more realistic set of nodes can be deployed.  We include an
+example below for `mesos-master`, `mesos-slave1`, `mesos-slave2`, and
+`mesos-slave3`.  There is a `disable_slave` flag that can be set per node to
+determine the personality of the node which is used on `mesos-master`.  
+The root `vm_ram` and `vm_cpus` will be applied where configuration is not set
+on individual nodes.
+
+```json
+{
+  "platform": "virtualbox",
+  "box_name": "playa_mesos_ubuntu_14.04_201601041324",
+  "base_url": "http://downloads.mesosphere.io/playa-mesos",
+  "hosts": {
+    "mesos-master": {
+      "ip": "10.141.141.10",
+      "vm_ram": "512",
+      "vm_cpus": "1",
+      "disable_slave": true
+    },
+    "mesos-slave1":{
+      "ip":"10.141.141.11",
+      "external_volumes":true
+    },
+    "mesos-slave2":{
+      "ip":"10.141.141.12",
+      "external_volumes":true
+    },
+    "mesos-slave3":{
+      "ip":"10.141.141.13",
+      "external_volumes":true
+    }
+	},
+  "vm_ram": "1024",
+  "vm_cpus": "1"
+}
+```
+
+## Runtime Note
+At any time you can remove a host or add a new host with new
+settings.
+
+```bash
+vagrant destroy -f mesos-slave1 && vagrant up mesos-slave1
+```
+
 ## Quick Start
 
 1. [Install VirtualBox](https://www.virtualbox.org/wiki/Downloads)
 
 1. [Install Vagrant](http://www.vagrantup.com/downloads.html)
 
+1. (Optional for external volumes) Disable authentication for VirtualBox and start the SOAP Web Service.
+
+  ```bash
+  VBoxManage setproperty websrvauthlibrary null
+  /Applications/VirtualBox.app/Contents/MacOS/vboxwebsrv -H 0.0.0.0 -v
+  ```
+
 1. Clone this repository
 
   ```bash
-  git clone https://github.com/mesosphere/playa-mesos.git
+  git clone https://github.com/mesosphere/playa-mesos
   cd playa-mesos
   ```
 
@@ -47,7 +148,7 @@ VMware [Fusion](https://www.vmware.com/products/fusion/) or [Workstation](https:
 1. SSH to the VM
 
   ```bash
-  vagrant ssh
+  vagrant ssh mesos-master
   ps -eaf | grep mesos
   exit
   ```
@@ -104,6 +205,42 @@ The build is controlled with the following files:
 For additional information on customizing the build, or creating a new profile,
 see [Configuration][15] and the [Packer Documentation][20].
 
+## External Volume Examples
+There are two personalities being advertised from the external volume driver.
+The first is for native Docker volumes through the `docker` Volume Driver name.
+This is where a Docker containerizer is being used.
+
+```bash
+docker run -ti --volume-driver=docker -v test:/test busybox
+df /test
+exit
+```
+
+The second is through the Mesos containerizer through the `mesos` Volume Driver
+name.  See the following Marathon example `job.json` file.  
+
+```json
+{
+  "id": "hello-play",
+  "cmd": "while [ true ] ; do touch /tmp/hello ; sleep 5 ; done",
+  "mem": 32,
+  "cpus": 0.1,
+  "instances": 1,
+  "env": {
+    "DVDI_VOLUME_NAME": "test2",
+    "DVDI_VOLUME_DRIVER": "mesos",
+    "DVDI_VOLUME_OPTS": "size=5"
+  }
+}
+```
+
+Start the job interactively through Marathon.
+
+```bash
+vagrant ssh mesos-master
+http post http://127.0.0.1:8080/v2/apps < job.json
+```
+
 ## Documentation
 
 * [Configuration][15]
@@ -116,7 +253,7 @@ see [Configuration][15] and the [Packer Documentation][20].
 
 * [vagrant-mesos](https://github.com/everpeace/vagrant-mesos): Vagrant
   provisioning with multinode and EC2 support
-* [babushka-mesos](https://github.com/parolkar/mesos-babushka): It is [Babushka](http://babushka.me/) based provisioning of Mesos Cluster which can help you demonstrate [potential](http://vimeo.com/110914075) of mesos. 
+* [babushka-mesos](https://github.com/parolkar/mesos-babushka): It is [Babushka](http://babushka.me/) based provisioning of Mesos Cluster which can help you demonstrate [potential](http://vimeo.com/110914075) of mesos.
 
 ## Authors
 
@@ -146,3 +283,5 @@ VMware Support: [Fabio Rapposelli](https://github.com/frapposelli) ([@fabiorappo
 [21]: config.json "config.json"
 [22]: packer/packer.json "packer.json"
 [23]: lib/scripts "scripts"
+[24]: https://github.com/emccode/rexray "REX-Ray"
+[25]: https://github.com/emccode/mesos-module-dvdi "mesos-module-dvdi"
diff --git a/Vagrantfile b/Vagrantfile
index 24708f2..9fd8266 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -19,65 +19,178 @@ ENV['VAGRANT_DEFAULT_PROVIDER'] = pmconf.platform
 
 Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
 
-  # Create a private network, which allows host-only access to the machine
-  # using a specific IP.
-  config.vm.network :private_network, ip: pmconf.ip_address
-
-  # If true, then any SSH connections made will enable agent forwarding.
-  # Default value: false
-  config.ssh.forward_agent = true
-
-  # Every Vagrant virtual environment requires a box to build off of.
-  config.vm.box = pmconf.box_name
-
-  # There are two levels of caching here.
-  # 1. If pmconf.box_local is set, then the file referenced by pmconf.box_url
-  #    was found in the Packer build path (packer/builds/*.box) and Vagrant's
-  #    vm.box_url is set to that path. To force retrieving the box
-  #    from the URL again, simply remove the Packer builds directory.
-  # 2. Vagrant only retrieves box images from vm.box_url if it does not have
-  #    a local copy in ~/.vagrant.d/boxes/$BOX_NAME. These can be removed
-  #    with the command: "vagrant box remove $BOX_NAME"
-  config.vm.box_url = pmconf.box_local ? pmconf.box_local : box_url
-
-  # Note: You'll want a decent amount of memory for your mesos master/slave
-  # VM. The strict minimum, at least while the VM is provisioned, is the
-  # amount necessary to compile mesos and the jenkins plugin. 2048m+ is
-  # recommended.  The CPU count can be lowered, but you may run into issues
-  # running the Jenkins Mesos Framework if you do so.
-  config.vm.provider :virtualbox do |vb|
-    vb.name = pmconf.box_name
-    vb.customize ['modifyvm', :id, '--memory', pmconf.vm_ram]
-    vb.customize ['modifyvm', :id, '--cpus',   pmconf.vm_cpus]
-  end
-  config.vm.provider :vmware_fusion do |v|
-    v.vmx['memsize'] = pmconf.vm_ram
-    v.vmx['numvcpus'] = pmconf.vm_cpus
-  end
-  config.vm.provider :vmware_workstation do |v|
-    v.vmx['memsize'] = pmconf.vm_ram
-    v.vmx['numvcpus'] = pmconf.vm_cpus
-  end
+  hosts = pmconf.hosts
+
+  hosts.each_key do |hostname|
+    config.vm.define hostname do |node|
+
+      node.vm.hostname = hostname
+
+      hostip = hosts[hostname]["ip"]
+
+      # Create a private network, which allows host-only access to the machine
+      # using a specific IP.
+      node.vm.network :private_network, ip: hostip
+
+      # If true, then any SSH connections made will enable agent forwarding.
+      # Default value: false
+      node.ssh.forward_agent = true
+
+      # Every Vagrant virtual environment requires a box to build off of.
+      node.vm.box = pmconf.box_name
+
+      # There are two levels of caching here.
+      # 1. If pmconf.box_local is set, then the file referenced by pmconf.box_url
+      #    was found in the Packer build path (packer/builds/*.box) and Vagrant's
+      #    vm.box_url is set to that path. To force retrieving the box
+      #    from the URL again, simply remove the Packer builds directory.
+      # 2. Vagrant only retrieves box images from vm.box_url if it does not have
+      #    a local copy in ~/.vagrant.d/boxes/$BOX_NAME. These can be removed
+      #    with the command: "vagrant box remove $BOX_NAME"
+      node.vm.box_url = pmconf.box_local ? pmconf.box_local : box_url
+
+      # Note: You'll want a decent amount of memory for your mesos master/slave
+      # VM. The strict minimum, at least while the VM is provisioned, is the
+      # amount necessary to compile mesos and the jenkins plugin. 2048m+ is
+      # recommended.  The CPU count can be lowered, but you may run into issues
+      # running the Jenkins Mesos Framework if you do so.
+      node.vm.provider :virtualbox do |vb|
+        vb.name = hostname
+        vb.customize ['modifyvm', :id, '--memory', hosts[hostname]["vm_ram"] ? hosts[hostname]["vm_ram"] : pmconf.vm_ram]
+        vb.customize ['modifyvm', :id, '--cpus',   hosts[hostname]["vm_cpus"] ? hosts[hostname]["vm_cpus"] : pmconf.vm_cpus]
+        vb.customize ["storagectl", :id, "--add", "sata", "--controller", "IntelAhci", "--name", "SATA", "--portcount", 30, "--hostiocache", "on"]
+        vb.customize ["modifyvm", :id, "--macaddress1", "auto"]
+      end
+      node.vm.provider :vmware_fusion do |v|
+        v.vmx['memsize'] = pmconf.vm_ram
+        v.vmx['numvcpus'] = pmconf.vm_cpus
+      end
+      node.vm.provider :vmware_workstation do |v|
+        v.vmx['memsize'] = pmconf.vm_ram
+        v.vmx['numvcpus'] = pmconf.vm_cpus
+      end
+
+      # Make the project root available to the guest VM.
+      # node.vm.synced_folder '.', '/vagrant'
+
+      dir = "#{ENV['PWD']}/Volumes"
+
+      master_ip = hosts["mesos-master"]["ip"]
+
+      # Only provision if explicitly request with 'provision' or 'up --provision'
+      if ARGV.any? { |arg| arg =~ /^(--)?provision$/ }
+        node.vm.provision :shell do |shell|
+          shell.path = 'lib/scripts/common/mesosflexinstall'
+          arg_array = ['--slave-hostname', hostip]
 
-  # Make the project root available to the guest VM.
-  # config.vm.synced_folder '.', '/vagrant'
+          # If mesos_release exists in the node.json file, pass the '--rel'
+          # argument and a version to mesosflexinstall. Otherwise, do nothing.
+          if pmconf.instance_variable_get(:@settings).include?('mesos_release')
+            arg_array += ['--rel', pmconf.mesos_release]
+          end
 
-  # Only provision if explicitly request with 'provision' or 'up --provision'
-  if ARGV.any? { |arg| arg =~ /^(--)?provision$/ }
-    config.vm.provision :shell do |shell|
-      shell.path = 'lib/scripts/common/mesosflexinstall'
-      arg_array = ['--slave-hostname', pmconf.ip_address]
+          # Using an array for shell args requires Vagrant 1.4.0+
+          # TODO: Set as array directly when Vagrant 1.3 support is dropped
+          shell.args = arg_array.join(' ')
+        end
+      end
+
+      if hostname == "mesos-master"
+        node.vm.provision "shell", inline: <<-SHELL
+          echo #{master_ip} > /etc/mesos-master/advertise_ip
+          service mesos-master restart
+          apt-get install -y httpie
+        SHELL
+      end
+
+      if hosts[hostname]["disable_slave"] == true
+        node.vm.provision "shell", inline: <<-SHELL
+          service mesos-slave stop
+          echo manual > /etc/init/mesos-slave.override
+        SHELL
+      end
 
-      # If mesos_release exists in the config.json file, pass the '--rel'
-      # argument and a version to mesosflexinstall. Otherwise, do nothing.
-      if pmconf.instance_variable_get(:@settings).include?('mesos_release')
-        arg_array += ['--rel', pmconf.mesos_release]
+      if hostname != "mesos-master"
+        node.vm.provision "shell", inline: <<-SHELL
+          service marathon stop
+          echo manual > /etc/init/marathon.override
+          service chronos stop
+          echo manual > /etc/init/chronos.override
+          service mesos-master stop
+          echo manual > /etc/init/zookeeper.override
+          service zookeeper stop
+          echo manual > /etc/init/mesos-master.override
+          service mesos-slave stop
+
+          echo #{hostip} > /etc/mesos-slave/hostname
+          echo #{hostip} > /etc/mesos-slave/ip
+          echo MASTER=zk://#{master_ip}:2181/mesos > /etc/default/mesos-slave
+          service mesos-slave start
+        SHELL
+      end
+
+      if hosts[hostname]["external_volumes"] == true
+        node.vm.provision "shell", inline: <<-SHELL
+          sudo curl -sSL https://dl.bintray.com/emccode/rexray/install | sh -s staged
+
+          sudo tee -a /etc/rexray/config.yml << EOF
+rexray:
+  storageDrivers:
+  - virtualbox
+  modules:
+    default-docker:
+      host: "unix:///run/docker/plugins/docker.sock"
+      rexray:
+        volume:
+          mount:
+            preempt: true
+    mesos:
+      type: docker
+      host: "unix:///run/docker/plugins/mesos.sock"
+      rexray:
+        volume:
+          mount:
+            preempt: true
+            ignoreUsedCount: true
+virtualbox:
+  endpoint: http://10.0.2.2:18083
+  tls: false
+  volumePath: /Users/user/VirtualBox Volumes
+  controllerName: SATA
+EOF
+
+          sed -i '/.*volumePath.*/c\\\x20\x20volumePath: \"#{dir}\"' /etc/rexray/config.yml
+
+          wget -nv --directory-prefix=/usr/lib https://github.com/emccode/mesos-module-dvdi/releases/download/v0.4.0/libmesos_dvdi_isolator-0.26.0.so 1&>2
+          sudo tee -a /usr/lib/dvdi-mod.json << EOF
+{
+  "libraries": [
+    {
+      "file": "/usr/lib/libmesos_dvdi_isolator-0.26.0.so",
+      "modules": [
+        {
+          "name": "com_emccode_mesos_DockerVolumeDriverIsolator"
+        }
+      ]
+    }
+  ]
+}
+EOF
+
+          echo file:///usr/lib/dvdi-mod.json > /etc/mesos-slave/modules
+          echo posix/cpu,posix/mem,com_emccode_mesos_DockerVolumeDriverIsolator > /etc/mesos-slave/isolation
+          curl -sSL https://dl.bintray.com/emccode/dvdcli/install | sh -
+
+          sudo rexray start
+        SHELL
+      end
+
+      if !hosts[hostname].has_key?("disable_slave") || hosts[hostname]["disable_slave"] == false
+        node.vm.provision "shell", inline: <<-SHELL
+          service mesos-slave restart
+        SHELL
       end
 
-      # Using an array for shell args requires Vagrant 1.4.0+
-      # TODO: Set as array directly when Vagrant 1.3 support is dropped
-      shell.args = arg_array.join(' ')
     end
   end
-
 end
diff --git a/bin/test b/bin/test
index 4c952c9..97f1174 100755
--- a/bin/test
+++ b/bin/test
@@ -7,7 +7,7 @@ declare -r pm_root="$( cd "$( dirname "${BASH_SOURCE[0]}" )/.." && pwd )"
 . "${pm_root}/lib/assert.sh/assert.sh"
 
 # Requirements
-declare -r min_vbox_ver=4.2
+declare -r min_vbox_ver=5.0.10
 declare -r min_vagrant_ver=1.3
 
 # Ensure required commands are available
diff --git a/config.json b/config.json
index dd0e0d9..9707f4a 100644
--- a/config.json
+++ b/config.json
@@ -1,8 +1,12 @@
 {
-    "platform": "virtualbox",
-    "box_name": "playa_mesos_ubuntu_14.04_201601041324",
-    "base_url": "http://downloads.mesosphere.io/playa-mesos",
-    "ip_address": "10.141.141.10",
-    "vm_ram": "2048",
-    "vm_cpus": "2"
+  "platform": "virtualbox",
+  "box_name": "playa_mesos_ubuntu_14.04_201601041324",
+  "base_url": "http://downloads.mesosphere.io/playa-mesos",
+  "hosts": {
+    "mesos-master": {
+      "ip": "10.141.141.10",
+      "vm_ram": "2048",
+      "vm_cpus": "2"
+    }
+	}
 }
diff --git a/lib/ruby/playa_settings.rb b/lib/ruby/playa_settings.rb
index 644bf54..7d9e096 100644
--- a/lib/ruby/playa_settings.rb
+++ b/lib/ruby/playa_settings.rb
@@ -14,7 +14,7 @@ def method_missing(sym, *args, &block)
     if @settings.include?(sym.to_s)
       return @settings[sym.to_s]
     else
-      super(sym, *args, &block)
+      #super(sym, *args, &block)
     end
   end