diff --git a/bundles/users/items.py b/bundles/users/items.py
index 40e57ce..85a0777 100644
--- a/bundles/users/items.py
+++ b/bundles/users/items.py
@@ -18,6 +18,9 @@ files = {
     },
 }
 
+for group, attrs in node.metadata.get('groups', {}).items():
+    groups[group] = attrs
+
 for username, attrs in node.metadata['users'].items():
     home = attrs.get('home', '/home/{}'.format(username))
 
diff --git a/nodes/home/nas.py b/nodes/home/nas.py
index d7d5ed4..1711ceb 100644
--- a/nodes/home/nas.py
+++ b/nodes/home/nas.py
@@ -29,6 +29,15 @@ nodes['home.nas'] = {
         'backup-server': {
             'zfs-base': 'storage/backups',
         },
+        'cron': {
+            # Ensure every user is able to read and write to the NAS dataset.
+            'chown_nas': '0 3 * * *    root    chown -R :nas /storage/nas/',
+            'chmod_nas_group': '0 4 * * *    root    chmod -R g+rw /storage/nas',
+            'chmod_nas_others': '0 4 * * *    root    chmod -R o-rwx /storage/nas',
+        },
+        'groups': {
+            'nas': {},
+        },
         'nfs-server': {
             'shares': {
                 '/storage/nas': {
@@ -64,6 +73,13 @@ nodes['home.nas'] = {
             'kunsi': {
                 'groups': {
                     'libvirt',
+                    'nas',
+                },
+            },
+            'sophie': {
+                'groups': {
+                    'libvirt',
+                    'nas',
                 },
             },
         },