diff --git a/group_vars/stage_demompmx/backup.yml b/group_vars/stage_demompmx/backup.yml
new file mode 100644
index 0000000..0b97e2a
--- /dev/null
+++ b/group_vars/stage_demompmx/backup.yml
@@ -0,0 +1,2 @@
+---
+backup_lvm_hcloudvol_size: 20