diff --git a/inventory/host_vars/yggdrasil/vars.yml b/inventory/host_vars/yggdrasil/vars.yml
index 042679e..d284100 100644
--- a/inventory/host_vars/yggdrasil/vars.yml
+++ b/inventory/host_vars/yggdrasil/vars.yml
@@ -56,6 +56,13 @@ system_backups_snapshots_dataset: "hpool/backup"
 system_backups_snapshots_root_dataset: "{{ system_backups_snapshots_dataset }}/the-nine-worlds"
 system_backups_snapshots_data_dataset: "{{ system_backups_snapshots_root_dataset }}/data"
 
+# --------------------------------------------------------------------------------------------------
+# system:external
+# --------------------------------------------------------------------------------------------------
+system_external_dataset: "hpool/external"
+system_external_root_dataset: "{{ system_external_dataset }}/the-nine-worlds"
+system_external_data_dataset: "{{ system_external_root_dataset }}/data"
+
 # --------------------------------------------------------------------------------------------------
 # vpn
 # --------------------------------------------------------------------------------------------------
diff --git a/playbooks/roles/system/datasets/tasks/include/external.yml b/playbooks/roles/system/datasets/tasks/include/external.yml
new file mode 100644
index 0000000..d2cc914
--- /dev/null
+++ b/playbooks/roles/system/datasets/tasks/include/external.yml
@@ -0,0 +1,20 @@
+---
+- name: "external : create root external dataset"
+  community.general.zfs:
+    name: "{{ system_external_dataset }}"
+    state: "present"
+    extra_zfs_properties:
+      canmount: "off"
+      "com.sun:auto-snapshot": "false"
+
+- name: "external : create external dataset root"
+  community.general.zfs:
+    name: "{{ system_external_root_dataset }}"
+    state: "present"
+
+- name: "external : create external dataset for the-nine-worlds"
+  community.general.zfs:
+    name: "{{ system_external_data_dataset }}"
+    state: "present"
+    extra_zfs_properties:
+      canmount: "off"
diff --git a/playbooks/roles/system/datasets/tasks/main.yml b/playbooks/roles/system/datasets/tasks/main.yml
index 07dc51f..18f88c4 100644
--- a/playbooks/roles/system/datasets/tasks/main.yml
+++ b/playbooks/roles/system/datasets/tasks/main.yml
@@ -8,3 +8,8 @@
   ansible.builtin.import_tasks: "include/backups.yml"
   tags:
     - "system:datasets:backups"
+
+- name: "play:system : role:datasets : tasks:external"
+  ansible.builtin.import_tasks: "include/external.yml"
+  tags:
+    - "system:datasets:external"
diff --git a/playbooks/vars/services/volumes.yml b/playbooks/vars/services/volumes.yml
index 5886568..93c6e05 100644
--- a/playbooks/vars/services/volumes.yml
+++ b/playbooks/vars/services/volumes.yml
@@ -17,6 +17,7 @@ services_volumes:
     nextcloud:
     data:
     external:
+      external: true
   git:
     data:
     runner: