diff --git a/lxc/grail/vars.tf b/lxc/grail/vars.tf
index 7ef6661..d348958 100644
--- a/lxc/grail/vars.tf
+++ b/lxc/grail/vars.tf
@@ -35,8 +35,8 @@ variable "datastore_id_media" {
 }
 
 variable "disk_size_gb_media" {
-  type    = number
-  default = 10000
+  type    = string
+  default = "10T"
 }
 # ---------------------------------------------------------------
 # Initialization specifics